/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_strcmp_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:06:46,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:06:46,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:06:46,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:06:46,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:06:46,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:06:46,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:06:46,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:06:46,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:06:46,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:06:46,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:06:46,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:06:46,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:06:46,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:06:46,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:06:46,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:06:46,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:06:46,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:06:46,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:06:46,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:06:46,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:06:46,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:06:46,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:06:46,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:06:46,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:06:46,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:06:46,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:06:46,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:06:46,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:06:46,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:06:46,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:06:46,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:06:46,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:06:46,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:06:46,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:06:46,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:06:46,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:06:46,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:06:46,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:06:46,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:06:46,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:06:46,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 09:06:46,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:06:46,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:06:46,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:06:46,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:06:46,994 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:06:46,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:06:46,995 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:06:46,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:06:46,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:06:46,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:06:46,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:06:46,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:06:46,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:06:46,996 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:06:46,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:06:46,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:06:46,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:06:46,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:06:46,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:06:46,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:06:46,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:06:46,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:06:47,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:06:47,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:06:47,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:06:47,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:06:47,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:06:47,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:06:47,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:06:47,001 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:06:47,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:06:47,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:06:47,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:06:47,521 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:06:47,521 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:06:47,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_strcmp_ground.i [2020-10-28 09:06:47,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77be27ae8/874cc7ca63fe45b7aae59bcdd98fe0c1/FLAGc697e2c93 [2020-10-28 09:06:48,289 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:06:48,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_strcmp_ground.i [2020-10-28 09:06:48,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77be27ae8/874cc7ca63fe45b7aae59bcdd98fe0c1/FLAGc697e2c93 [2020-10-28 09:06:48,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77be27ae8/874cc7ca63fe45b7aae59bcdd98fe0c1 [2020-10-28 09:06:48,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:06:48,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:06:48,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:06:48,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:06:48,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:06:48,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:06:48" (1/1) ... [2020-10-28 09:06:48,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d6cdbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:48, skipping insertion in model container [2020-10-28 09:06:48,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:06:48" (1/1) ... [2020-10-28 09:06:48,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:06:48,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:06:48,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:06:48,874 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:06:48,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:06:48,917 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:06:48,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:48 WrapperNode [2020-10-28 09:06:48,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:06:48,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:06:48,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:06:48,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:06:48,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:48" (1/1) ... [2020-10-28 09:06:48,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:48" (1/1) ... [2020-10-28 09:06:48,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:48" (1/1) ... [2020-10-28 09:06:48,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:48" (1/1) ... [2020-10-28 09:06:48,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:48" (1/1) ... [2020-10-28 09:06:48,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:48" (1/1) ... [2020-10-28 09:06:48,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:48" (1/1) ... [2020-10-28 09:06:48,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:06:48,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:06:48,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:06:48,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:06:48,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:06:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:06:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:06:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:06:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:06:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure _strcmp [2020-10-28 09:06:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:06:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:06:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:06:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 09:06:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 09:06:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:06:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:06:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:06:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:06:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure _strcmp [2020-10-28 09:06:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:06:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:06:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:06:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:06:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:06:49,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:06:49,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:06:49,461 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:06:49,461 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 09:06:49,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:49 BoogieIcfgContainer [2020-10-28 09:06:49,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:06:49,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:06:49,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:06:49,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:06:49,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:06:48" (1/3) ... [2020-10-28 09:06:49,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b2793d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:06:49, skipping insertion in model container [2020-10-28 09:06:49,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:48" (2/3) ... [2020-10-28 09:06:49,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b2793d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:06:49, skipping insertion in model container [2020-10-28 09:06:49,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:49" (3/3) ... [2020-10-28 09:06:49,477 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_strcmp_ground.i [2020-10-28 09:06:49,492 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:06:49,498 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:06:49,515 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:06:49,563 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:06:49,566 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:06:49,566 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:06:49,567 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:06:49,567 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:06:49,567 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:06:49,567 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:06:49,567 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:06:49,609 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-28 09:06:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:06:49,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:49,627 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] [2020-10-28 09:06:49,630 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:49,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:49,648 INFO L82 PathProgramCache]: Analyzing trace with hash 431389671, now seen corresponding path program 1 times [2020-10-28 09:06:49,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:49,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297183988] [2020-10-28 09:06:49,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:49,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:50,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:50,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:06:50,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:06:50,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-28 09:06:50,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:50,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:50,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:50,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:06:50,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:50,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 09:06:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:50,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:50,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:50,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:50,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:50,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 09:06:50,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:50,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:50,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:50,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:06:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:50,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:50,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:50,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:50,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:06:50,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:06:50,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 09:06:50,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:50,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:06:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:50,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:06:50,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:06:50,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297183988] [2020-10-28 09:06:50,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:06:50,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:06:50,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850010559] [2020-10-28 09:06:50,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:06:50,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:50,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:06:50,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:06:50,521 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-28 09:06:50,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:50,652 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2020-10-28 09:06:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:06:50,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-28 09:06:50,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:50,663 INFO L225 Difference]: With dead ends: 63 [2020-10-28 09:06:50,663 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 09:06:50,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:06:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 09:06:50,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-28 09:06:50,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 09:06:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-28 09:06:50,714 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2020-10-28 09:06:50,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:50,714 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-28 09:06:50,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:06:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-28 09:06:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:06:50,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:50,716 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] [2020-10-28 09:06:50,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:06:50,717 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:50,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:50,718 INFO L82 PathProgramCache]: Analyzing trace with hash -800372563, now seen corresponding path program 1 times [2020-10-28 09:06:50,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:50,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161154827] [2020-10-28 09:06:50,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:50,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:50,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:50,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:50,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:06:50,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:06:50,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 09:06:50,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:50,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:50,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:06:50,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 09:06:50,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:06:50,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:50,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:50,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:50,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:50,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:50,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:50,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:06:50,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:50,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:50,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:50,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:06:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:50,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:50,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:50,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:06:50,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:06:50,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:50,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:06:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:06:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:06:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:06:50,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161154827] [2020-10-28 09:06:50,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:06:50,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:06:50,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424596668] [2020-10-28 09:06:50,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:06:50,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:50,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:06:50,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:06:50,985 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 4 states. [2020-10-28 09:06:51,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:51,106 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2020-10-28 09:06:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:06:51,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-28 09:06:51,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:51,110 INFO L225 Difference]: With dead ends: 50 [2020-10-28 09:06:51,110 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 09:06:51,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:06:51,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 09:06:51,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-10-28 09:06:51,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 09:06:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-10-28 09:06:51,123 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2020-10-28 09:06:51,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:51,123 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-10-28 09:06:51,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:06:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-10-28 09:06:51,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:06:51,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:51,125 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] [2020-10-28 09:06:51,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:06:51,126 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:51,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:51,127 INFO L82 PathProgramCache]: Analyzing trace with hash -2032592172, now seen corresponding path program 1 times [2020-10-28 09:06:51,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:51,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833404471] [2020-10-28 09:06:51,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:51,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:51,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:51,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:51,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:06:51,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:06:51,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-28 09:06:51,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:51,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:51,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:06:51,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:06:51,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:06:51,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:51,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:51,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:51,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:51,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:51,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:51,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:06:51,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:51,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:51,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:51,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:06:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:51,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:51,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:51,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:06:51,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:51,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:06:51,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:51,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:06:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:51,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:06:51,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833404471] [2020-10-28 09:06:51,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:06:51,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:06:51,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466615809] [2020-10-28 09:06:51,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:06:51,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:51,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:06:51,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:06:51,611 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 4 states. [2020-10-28 09:06:51,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:51,701 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-10-28 09:06:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:06:51,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-28 09:06:51,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:51,702 INFO L225 Difference]: With dead ends: 54 [2020-10-28 09:06:51,703 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 09:06:51,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:06:51,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 09:06:51,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 09:06:51,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 09:06:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-28 09:06:51,712 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2020-10-28 09:06:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:51,712 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-28 09:06:51,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:06:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-28 09:06:51,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 09:06:51,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:51,714 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] [2020-10-28 09:06:51,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:06:51,714 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:51,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:51,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1128743094, now seen corresponding path program 1 times [2020-10-28 09:06:51,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:51,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607009298] [2020-10-28 09:06:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:51,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:52,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:52,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:06:52,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:06:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-28 09:06:52,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:52,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:06:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 09:06:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:06:52,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:52,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:52,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:52,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:52,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:52,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:52,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:06:52,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:52,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:52,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 09:06:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:52,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:52,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:06:52,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:52,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:06:52,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:52,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:06:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:06:52,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 09:06:52,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607009298] [2020-10-28 09:06:52,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:06:52,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 09:06:52,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082172428] [2020-10-28 09:06:52,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:06:52,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:52,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:06:52,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:06:52,145 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2020-10-28 09:06:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:52,273 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-10-28 09:06:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:06:52,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-28 09:06:52,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:52,275 INFO L225 Difference]: With dead ends: 47 [2020-10-28 09:06:52,275 INFO L226 Difference]: Without dead ends: 31 [2020-10-28 09:06:52,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:06:52,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-28 09:06:52,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-28 09:06:52,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 09:06:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-28 09:06:52,283 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 24 [2020-10-28 09:06:52,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:52,283 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-28 09:06:52,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:06:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-28 09:06:52,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 09:06:52,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:52,285 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] [2020-10-28 09:06:52,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:06:52,285 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:52,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:52,286 INFO L82 PathProgramCache]: Analyzing trace with hash -212767701, now seen corresponding path program 1 times [2020-10-28 09:06:52,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:52,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829353334] [2020-10-28 09:06:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:52,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:52,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:52,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:52,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:52,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 09:06:52,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:06:52,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 697 [2020-10-28 09:06:52,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:52,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:06:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 09:06:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:06:52,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:53,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:53,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:53,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:53,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:53,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:53,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:06:53,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:53,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:53,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:53,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 09:06:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:53,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:53,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:53,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 09:06:53,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 09:06:53,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:53,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:06:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:06:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:06:53,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 09:06:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 09:06:53,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829353334] [2020-10-28 09:06:53,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:53,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:06:53,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909692250] [2020-10-28 09:06:53,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:06:53,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:53,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:06:53,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:06:53,140 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 5 states. [2020-10-28 09:06:53,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:53,317 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-10-28 09:06:53,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:06:53,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-28 09:06:53,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:53,319 INFO L225 Difference]: With dead ends: 51 [2020-10-28 09:06:53,320 INFO L226 Difference]: Without dead ends: 34 [2020-10-28 09:06:53,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:06:53,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-28 09:06:53,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-28 09:06:53,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 09:06:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-28 09:06:53,333 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 26 [2020-10-28 09:06:53,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:53,335 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-28 09:06:53,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:06:53,335 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-28 09:06:53,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 09:06:53,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:53,336 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:53,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:06:53,337 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:53,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:53,338 INFO L82 PathProgramCache]: Analyzing trace with hash 333476551, now seen corresponding path program 2 times [2020-10-28 09:06:53,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:53,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174073685] [2020-10-28 09:06:53,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:53,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:53,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:53,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:54,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:54,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 09:06:54,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:06:54,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1291 [2020-10-28 09:06:54,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:54,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:06:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 09:06:54,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:06:54,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:54,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:54,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:54,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:54,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:54,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:54,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:06:54,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:54,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:54,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:54,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 09:06:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:54,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:54,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:54,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:06:54,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:54,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 09:06:54,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:54,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:06:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:06:54,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:06:54,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 09:06:54,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174073685] [2020-10-28 09:06:54,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:54,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:06:54,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882331610] [2020-10-28 09:06:54,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:06:54,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:54,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:06:54,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:06:54,761 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 6 states. [2020-10-28 09:06:54,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:54,971 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-10-28 09:06:54,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:06:54,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-28 09:06:54,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:54,974 INFO L225 Difference]: With dead ends: 53 [2020-10-28 09:06:54,974 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 09:06:54,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:06:54,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 09:06:54,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-28 09:06:54,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 09:06:54,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-10-28 09:06:54,988 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2020-10-28 09:06:54,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:54,988 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-10-28 09:06:54,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:06:54,989 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-10-28 09:06:54,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 09:06:54,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:54,990 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:54,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:06:54,991 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:54,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:54,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1288192611, now seen corresponding path program 3 times [2020-10-28 09:06:54,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:54,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237103338] [2020-10-28 09:06:54,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:55,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:55,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:55,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:56,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:56,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 09:06:56,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:06:56,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1808 [2020-10-28 09:06:56,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:56,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:56,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:06:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:06:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:06:56,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:56,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:56,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:56,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:56,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:56,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:06:56,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:56,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:56,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 09:06:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:56,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:56,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:56,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:56,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 09:06:56,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:06:56,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 09:06:56,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:56,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:56,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:56,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:06:56,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:06:56,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237103338] [2020-10-28 09:06:56,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:56,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:06:56,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827985005] [2020-10-28 09:06:56,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:06:56,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:56,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:06:56,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:06:56,930 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2020-10-28 09:06:57,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:57,020 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-10-28 09:06:57,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:06:57,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-28 09:06:57,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:57,021 INFO L225 Difference]: With dead ends: 64 [2020-10-28 09:06:57,022 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 09:06:57,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:06:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 09:06:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-28 09:06:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 09:06:57,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-10-28 09:06:57,029 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 30 [2020-10-28 09:06:57,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:57,029 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-10-28 09:06:57,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:06:57,029 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-10-28 09:06:57,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 09:06:57,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:57,030 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:57,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:06:57,031 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:57,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:57,032 INFO L82 PathProgramCache]: Analyzing trace with hash -2085919163, now seen corresponding path program 4 times [2020-10-28 09:06:57,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:57,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620911162] [2020-10-28 09:06:57,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:57,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:57,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:57,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:59,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:59,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 09:06:59,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:06:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2613 [2020-10-28 09:06:59,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:59,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:06:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 09:06:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:06:59,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:59,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:59,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:59,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:59,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:59,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:59,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:06:59,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:59,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:59,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:59,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:59,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:59,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:59,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 09:06:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:59,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:59,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:59,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 09:06:59,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:59,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 09:06:59,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:59,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:06:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:06:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:06:59,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 09:06:59,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620911162] [2020-10-28 09:06:59,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:59,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:06:59,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212976425] [2020-10-28 09:06:59,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:06:59,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:59,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:06:59,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:06:59,773 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 7 states. [2020-10-28 09:06:59,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:59,978 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-10-28 09:06:59,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:06:59,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-10-28 09:06:59,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:59,980 INFO L225 Difference]: With dead ends: 57 [2020-10-28 09:06:59,980 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 09:06:59,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:06:59,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 09:06:59,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-28 09:06:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 09:06:59,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-28 09:06:59,987 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 32 [2020-10-28 09:06:59,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:59,988 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-28 09:06:59,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:06:59,988 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-28 09:06:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 09:06:59,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:59,989 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:59,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:06:59,990 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:59,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:59,991 INFO L82 PathProgramCache]: Analyzing trace with hash -173781407, now seen corresponding path program 5 times [2020-10-28 09:06:59,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:59,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517629384] [2020-10-28 09:06:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:00,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:00,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:00,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:03,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:03,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 09:07:03,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:03,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3803 [2020-10-28 09:07:03,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:03,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:03,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:07:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 09:07:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:07:03,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:07:03,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:03,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:03,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:03,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:03,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:07:03,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:03,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:03,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:03,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:03,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:03,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 09:07:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:03,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:03,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:03,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 09:07:03,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:03,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 09:07:03,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:03,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:03,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:07:03,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:07:03,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:07:03,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:07:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 09:07:04,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517629384] [2020-10-28 09:07:04,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:04,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:07:04,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412274172] [2020-10-28 09:07:04,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:07:04,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:04,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:07:04,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:07:04,013 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 8 states. [2020-10-28 09:07:04,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:04,244 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-10-28 09:07:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:07:04,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-10-28 09:07:04,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:04,245 INFO L225 Difference]: With dead ends: 59 [2020-10-28 09:07:04,245 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 09:07:04,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:07:04,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 09:07:04,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-28 09:07:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 09:07:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-28 09:07:04,253 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 34 [2020-10-28 09:07:04,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:04,254 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-28 09:07:04,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:07:04,254 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-28 09:07:04,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 09:07:04,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:04,255 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:04,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:07:04,255 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:04,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:04,256 INFO L82 PathProgramCache]: Analyzing trace with hash -855400579, now seen corresponding path program 6 times [2020-10-28 09:07:04,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:04,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505971068] [2020-10-28 09:07:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:04,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:04,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:04,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:08,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:08,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 09:07:08,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:08,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3983 [2020-10-28 09:07:08,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:08,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:08,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:07:08,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:07:08,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:08,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:07:08,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:08,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:08,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:08,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:08,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:07:08,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:08,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:08,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:08,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:08,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:08,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:08,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 09:07:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:08,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:08,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:08,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:08,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 09:07:08,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:07:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 09:07:08,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:08,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 09:07:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:08,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:07:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 09:07:08,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505971068] [2020-10-28 09:07:08,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:08,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:07:08,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789381177] [2020-10-28 09:07:08,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:07:08,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:08,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:07:08,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:07:08,402 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 6 states. [2020-10-28 09:07:08,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:08,514 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2020-10-28 09:07:08,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:07:08,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-28 09:07:08,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:08,515 INFO L225 Difference]: With dead ends: 74 [2020-10-28 09:07:08,515 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 09:07:08,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:07:08,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 09:07:08,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-28 09:07:08,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 09:07:08,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-10-28 09:07:08,529 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 36 [2020-10-28 09:07:08,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:08,530 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-10-28 09:07:08,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:07:08,530 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-10-28 09:07:08,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 09:07:08,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:08,531 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:08,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:07:08,532 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:08,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:08,535 INFO L82 PathProgramCache]: Analyzing trace with hash 989909471, now seen corresponding path program 7 times [2020-10-28 09:07:08,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:08,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557924103] [2020-10-28 09:07:08,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:08,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:08,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:13,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:13,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 09:07:13,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:13,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:07:13,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:13,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:13,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:07:13,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:07:13,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:07:13,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:07:13,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:13,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:13,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:13,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:13,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:13,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:07:13,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:13,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:13,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:13,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:13,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:13,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:13,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:07:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:13,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:13,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:13,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 09:07:13,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:13,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 09:07:13,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:13,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:13,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:07:13,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:07:13,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:07:13,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:07:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:07:13,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557924103] [2020-10-28 09:07:13,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:13,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:07:13,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664014102] [2020-10-28 09:07:13,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:07:13,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:13,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:07:13,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:07:13,724 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 9 states. [2020-10-28 09:07:13,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:13,998 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-10-28 09:07:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:07:13,998 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-28 09:07:13,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:13,999 INFO L225 Difference]: With dead ends: 63 [2020-10-28 09:07:13,999 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 09:07:14,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:07:14,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 09:07:14,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 09:07:14,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 09:07:14,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-28 09:07:14,010 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 38 [2020-10-28 09:07:14,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:14,011 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-28 09:07:14,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:07:14,013 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-28 09:07:14,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 09:07:14,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:14,016 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:14,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:07:14,018 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:14,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:14,018 INFO L82 PathProgramCache]: Analyzing trace with hash 760036219, now seen corresponding path program 8 times [2020-10-28 09:07:14,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:14,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292005180] [2020-10-28 09:07:14,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:14,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:14,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:14,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:19,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:19,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 09:07:19,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:19,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:07:19,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:19,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:19,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:07:19,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:07:19,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:07:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:19,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:19,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:19,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:19,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:19,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:19,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:07:19,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:19,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:19,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:19,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:07:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:19,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:19,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:19,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 09:07:19,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:19,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 09:07:19,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:19,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:19,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:07:19,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:07:19,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:07:19,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:07:19,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292005180] [2020-10-28 09:07:19,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:19,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:07:19,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826135073] [2020-10-28 09:07:19,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:07:19,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:19,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:07:19,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:07:19,216 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 10 states. [2020-10-28 09:07:19,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:19,601 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-10-28 09:07:19,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:07:19,602 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-28 09:07:19,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:19,603 INFO L225 Difference]: With dead ends: 65 [2020-10-28 09:07:19,603 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 09:07:19,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:07:19,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 09:07:19,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-28 09:07:19,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 09:07:19,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-28 09:07:19,615 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 40 [2020-10-28 09:07:19,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:19,616 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-28 09:07:19,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:07:19,616 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-28 09:07:19,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 09:07:19,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:19,619 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:19,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:07:19,619 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:19,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:19,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1104826857, now seen corresponding path program 9 times [2020-10-28 09:07:19,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:19,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803318828] [2020-10-28 09:07:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:19,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:19,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:19,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:24,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:24,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 09:07:24,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:24,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:07:24,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:24,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:24,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:07:24,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:07:24,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:07:24,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:24,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:24,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:24,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:24,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:24,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:24,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:07:24,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:24,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:24,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:07:24,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:07:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:24,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:24,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:24,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:24,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 09:07:24,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:07:24,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 09:07:24,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:24,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:07:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:24,797 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-28 09:07:24,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803318828] [2020-10-28 09:07:24,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:24,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:07:24,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807756848] [2020-10-28 09:07:24,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:07:24,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:24,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:07:24,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:07:24,799 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 7 states. [2020-10-28 09:07:24,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:24,916 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2020-10-28 09:07:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:07:24,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-28 09:07:24,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:24,917 INFO L225 Difference]: With dead ends: 84 [2020-10-28 09:07:24,917 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 09:07:24,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:07:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 09:07:24,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-28 09:07:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 09:07:24,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-10-28 09:07:24,930 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 42 [2020-10-28 09:07:24,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:24,930 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-10-28 09:07:24,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:07:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-10-28 09:07:24,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 09:07:24,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:24,932 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:24,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:07:24,933 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:24,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:24,933 INFO L82 PathProgramCache]: Analyzing trace with hash 840437497, now seen corresponding path program 10 times [2020-10-28 09:07:24,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:24,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318973355] [2020-10-28 09:07:24,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:24,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:24,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:25,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:29,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:29,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 09:07:29,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:29,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:07:29,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:29,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:07:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:07:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 09:07:29,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:30,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:30,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:30,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:30,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:30,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:07:30,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:30,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:30,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:30,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:30,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:30,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:30,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 09:07:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:30,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:30,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:30,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:30,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 09:07:30,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:07:30,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 09:07:30,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:30,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:30,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:07:30,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:30,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 09:07:30,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-28 09:07:30,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318973355] [2020-10-28 09:07:30,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:30,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:07:30,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865094842] [2020-10-28 09:07:30,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:07:30,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:30,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:07:30,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:07:30,371 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 11 states. [2020-10-28 09:07:30,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:30,809 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-10-28 09:07:30,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:07:30,810 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-28 09:07:30,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:30,811 INFO L225 Difference]: With dead ends: 61 [2020-10-28 09:07:30,812 INFO L226 Difference]: Without dead ends: 57 [2020-10-28 09:07:30,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:07:30,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-28 09:07:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-28 09:07:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 09:07:30,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-10-28 09:07:30,827 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 44 [2020-10-28 09:07:30,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:30,828 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-10-28 09:07:30,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:07:30,828 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-10-28 09:07:30,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 09:07:30,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:30,829 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:30,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:07:30,829 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:30,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:30,829 INFO L82 PathProgramCache]: Analyzing trace with hash -450233607, now seen corresponding path program 1 times [2020-10-28 09:07:30,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:30,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776457313] [2020-10-28 09:07:30,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:30,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:30,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:31,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:35,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:35,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 09:07:35,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:35,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:07:35,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:35,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:07:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 09:07:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:07:35,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:35,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:35,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:35,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:35,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:35,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:07:35,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:35,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:35,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:35,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 09:07:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:35,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:35,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:35,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 09:07:35,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:35,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 09:07:35,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:35,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:35,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:07:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:07:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:07:35,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:36,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:07:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:36,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:36,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:36,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:36,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:36,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:36,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:36,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:36,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:36,065 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 2 proven. 49 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:07:36,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776457313] [2020-10-28 09:07:36,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:36,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:07:36,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546897805] [2020-10-28 09:07:36,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:07:36,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:36,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:07:36,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:07:36,069 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 11 states. [2020-10-28 09:07:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:36,496 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2020-10-28 09:07:36,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:07:36,496 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-28 09:07:36,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:36,498 INFO L225 Difference]: With dead ends: 81 [2020-10-28 09:07:36,498 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 09:07:36,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:07:36,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 09:07:36,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-28 09:07:36,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 09:07:36,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-10-28 09:07:36,507 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 52 [2020-10-28 09:07:36,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:36,507 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-10-28 09:07:36,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:07:36,507 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-10-28 09:07:36,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 09:07:36,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:36,508 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:36,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:07:36,508 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:36,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:36,509 INFO L82 PathProgramCache]: Analyzing trace with hash -849565163, now seen corresponding path program 2 times [2020-10-28 09:07:36,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:36,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586316920] [2020-10-28 09:07:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:36,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:36,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:37,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:41,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:41,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 09:07:41,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:41,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:07:41,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:41,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:41,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:07:41,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:07:41,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:07:41,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:41,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:41,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:41,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:41,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:41,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:41,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:41,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:41,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:41,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:41,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:41,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:41,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 09:07:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:41,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:41,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:41,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:41,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 09:07:41,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:07:41,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 09:07:41,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:41,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 09:07:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:41,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:41,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:07:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:41,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:41,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:41,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:41,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:41,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:41,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:41,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:41,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:41,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:41,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:41,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:07:41,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586316920] [2020-10-28 09:07:41,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:41,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:07:41,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085274718] [2020-10-28 09:07:41,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:07:41,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:41,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:07:41,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:07:41,687 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 8 states. [2020-10-28 09:07:41,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:41,846 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2020-10-28 09:07:41,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:07:41,847 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-28 09:07:41,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:41,848 INFO L225 Difference]: With dead ends: 102 [2020-10-28 09:07:41,848 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 09:07:41,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:07:41,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 09:07:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-28 09:07:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 09:07:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-10-28 09:07:41,856 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 54 [2020-10-28 09:07:41,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:41,857 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-10-28 09:07:41,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:07:41,857 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-10-28 09:07:41,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 09:07:41,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:41,858 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:41,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:07:41,858 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:41,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:41,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1737832457, now seen corresponding path program 3 times [2020-10-28 09:07:41,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:41,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898787023] [2020-10-28 09:07:41,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:41,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:42,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:46,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:46,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 09:07:46,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:46,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:07:46,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:46,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:46,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:07:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 09:07:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 09:07:46,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:47,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:47,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:47,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:47,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:47,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:47,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:07:47,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:47,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:47,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:47,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:47,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:47,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:47,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 09:07:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:47,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:47,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:47,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:47,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 09:07:47,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:07:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 09:07:47,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:47,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:07:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 09:07:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:47,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 09:07:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:47,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:47,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:47,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:47,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:47,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:47,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:47,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:47,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:07:47,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:47,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:47,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-28 09:07:47,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898787023] [2020-10-28 09:07:47,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:47,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:07:47,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896496964] [2020-10-28 09:07:47,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:07:47,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:47,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:07:47,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:07:47,336 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 13 states. [2020-10-28 09:07:48,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:48,055 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2020-10-28 09:07:48,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:07:48,055 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2020-10-28 09:07:48,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:48,057 INFO L225 Difference]: With dead ends: 73 [2020-10-28 09:07:48,057 INFO L226 Difference]: Without dead ends: 69 [2020-10-28 09:07:48,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:07:48,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-28 09:07:48,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-10-28 09:07:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-28 09:07:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2020-10-28 09:07:48,070 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 56 [2020-10-28 09:07:48,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:48,071 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2020-10-28 09:07:48,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:07:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2020-10-28 09:07:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 09:07:48,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:48,072 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:48,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:07:48,072 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:48,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:48,073 INFO L82 PathProgramCache]: Analyzing trace with hash 623564279, now seen corresponding path program 4 times [2020-10-28 09:07:48,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:48,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640183221] [2020-10-28 09:07:48,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:48,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:48,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:48,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:53,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:53,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 09:07:53,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:53,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:07:53,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:53,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:07:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 09:07:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 09:07:53,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:53,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:53,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:53,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:53,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:53,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:53,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:53,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:53,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:53,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 09:07:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:53,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:53,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:53,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 09:07:53,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:53,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 09:07:53,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:53,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:53,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:07:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:07:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 09:07:53,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:53,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 09:07:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:53,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:53,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:53,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:53,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:53,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:53,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:53,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:53,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:53,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:07:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:53,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:53,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:53,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:53,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:53,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:53,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:53,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:53,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:53,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 4 proven. 64 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-28 09:07:53,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640183221] [2020-10-28 09:07:53,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:53,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:07:53,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565753488] [2020-10-28 09:07:53,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:07:53,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:53,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:07:53,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:07:53,314 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 12 states. [2020-10-28 09:07:53,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:53,801 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2020-10-28 09:07:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:07:53,801 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-28 09:07:53,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:53,803 INFO L225 Difference]: With dead ends: 101 [2020-10-28 09:07:53,803 INFO L226 Difference]: Without dead ends: 70 [2020-10-28 09:07:53,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:07:53,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-28 09:07:53,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-28 09:07:53,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 09:07:53,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-10-28 09:07:53,813 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 64 [2020-10-28 09:07:53,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:53,813 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-10-28 09:07:53,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:07:53,813 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-10-28 09:07:53,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 09:07:53,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:53,814 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:53,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:07:53,815 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:53,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:53,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1069212051, now seen corresponding path program 5 times [2020-10-28 09:07:53,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:53,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995083364] [2020-10-28 09:07:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:53,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:53,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:54,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:58,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:58,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 09:07:58,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:58,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 09:07:58,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:58,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:58,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:07:58,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 09:07:58,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:07:58,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:58,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:58,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:58,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:58,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:58,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:58,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:58,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:58,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:58,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:58,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:58,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:58,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:58,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 09:07:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:58,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:58,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 09:07:58,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:58,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 09:07:58,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:58,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:58,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:07:58,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:07:58,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:07:58,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:07:59,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:07:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:59,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:59,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:59,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:59,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:59,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:59,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:59,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:59,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:59,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:59,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:59,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:07:59,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:07:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:59,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:59,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:59,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:59,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:59,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:59,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:59,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:59,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:59,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:59,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:59,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:07:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 81 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-28 09:07:59,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995083364] [2020-10-28 09:07:59,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:59,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:07:59,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036974457] [2020-10-28 09:07:59,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:07:59,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:59,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:07:59,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:07:59,157 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 13 states. [2020-10-28 09:07:59,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:59,713 INFO L93 Difference]: Finished difference Result 103 states and 106 transitions. [2020-10-28 09:07:59,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:07:59,714 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-28 09:07:59,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:59,715 INFO L225 Difference]: With dead ends: 103 [2020-10-28 09:07:59,715 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 09:07:59,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:07:59,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 09:07:59,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-28 09:07:59,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 09:07:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-10-28 09:07:59,727 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 66 [2020-10-28 09:07:59,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:59,727 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-10-28 09:07:59,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:07:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-10-28 09:07:59,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 09:07:59,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:59,732 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:59,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:07:59,733 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:59,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:59,733 INFO L82 PathProgramCache]: Analyzing trace with hash -160008657, now seen corresponding path program 6 times [2020-10-28 09:07:59,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:59,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625513488] [2020-10-28 09:07:59,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:59,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:00,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:04,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:04,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 09:08:04,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:08:04,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:08:04,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:04,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:08:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:08:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:08:04,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:04,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:04,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:04,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:04,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:04,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:04,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:04,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:04,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:04,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:04,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 09:08:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:04,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:04,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:04,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:04,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 09:08:04,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:04,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 09:08:04,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:04,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 09:08:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:04,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:08:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:04,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:04,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:04,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:04,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:04,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:04,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:04,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:08:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:04,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:04,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:04,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:04,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:04,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:04,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:04,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-28 09:08:04,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625513488] [2020-10-28 09:08:04,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:04,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:08:04,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467009757] [2020-10-28 09:08:04,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:08:04,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:04,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:08:04,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:08:04,982 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 9 states. [2020-10-28 09:08:05,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:05,131 INFO L93 Difference]: Finished difference Result 128 states and 132 transitions. [2020-10-28 09:08:05,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:08:05,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-28 09:08:05,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:05,133 INFO L225 Difference]: With dead ends: 128 [2020-10-28 09:08:05,133 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 09:08:05,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:08:05,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 09:08:05,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-28 09:08:05,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 09:08:05,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-10-28 09:08:05,142 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 68 [2020-10-28 09:08:05,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:05,142 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-10-28 09:08:05,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:08:05,142 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-10-28 09:08:05,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 09:08:05,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:05,143 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:05,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:08:05,144 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:05,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:05,144 INFO L82 PathProgramCache]: Analyzing trace with hash 2143395985, now seen corresponding path program 7 times [2020-10-28 09:08:05,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:05,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942145203] [2020-10-28 09:08:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:05,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:06,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:10,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:10,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 09:08:10,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:08:10,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 09:08:10,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:10,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:08:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 09:08:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 09:08:10,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:10,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:10,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:10,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:10,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:10,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:10,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:10,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:10,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:10,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 09:08:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:10,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:10,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:10,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 09:08:10,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:10,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 09:08:10,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:10,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:10,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:08:10,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:08:10,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 09:08:10,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:10,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 09:08:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:10,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:10,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:10,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:10,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:10,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:10,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:10,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:10,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:10,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:10,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:10,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:10,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:08:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:10,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:10,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:10,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:10,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:10,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:10,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:10,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:10,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:10,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:10,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:10,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:10,435 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-28 09:08:10,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942145203] [2020-10-28 09:08:10,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:10,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:08:10,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801076058] [2020-10-28 09:08:10,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:08:10,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:10,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:08:10,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:08:10,438 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 14 states. [2020-10-28 09:08:11,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:11,039 INFO L93 Difference]: Finished difference Result 107 states and 110 transitions. [2020-10-28 09:08:11,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:08:11,040 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-10-28 09:08:11,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:11,041 INFO L225 Difference]: With dead ends: 107 [2020-10-28 09:08:11,041 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 09:08:11,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:08:11,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 09:08:11,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-28 09:08:11,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 09:08:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-10-28 09:08:11,051 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 70 [2020-10-28 09:08:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:11,051 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-10-28 09:08:11,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:08:11,051 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-10-28 09:08:11,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 09:08:11,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:11,052 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:11,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:08:11,052 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:11,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:11,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1338600877, now seen corresponding path program 8 times [2020-10-28 09:08:11,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:11,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737874928] [2020-10-28 09:08:11,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:11,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:11,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:12,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:16,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:16,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 09:08:16,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:08:16,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 09:08:16,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:16,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:08:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:08:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:08:16,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:16,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:16,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:16,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:16,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:16,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:16,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:16,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:16,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:16,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:16,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:16,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:16,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:16,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 09:08:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:16,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:16,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:16,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:16,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 09:08:16,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:16,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 09:08:16,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:16,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:16,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:16,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 09:08:16,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:16,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:16,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:08:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:16,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:16,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:16,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:16,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:16,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:16,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:16,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:16,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:16,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:08:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:16,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:16,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:16,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:16,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:16,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:16,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:16,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:16,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-10-28 09:08:16,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737874928] [2020-10-28 09:08:16,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:16,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:08:16,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405205337] [2020-10-28 09:08:16,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:08:16,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:16,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:08:16,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:08:16,281 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 10 states. [2020-10-28 09:08:16,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:16,400 INFO L93 Difference]: Finished difference Result 134 states and 138 transitions. [2020-10-28 09:08:16,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:08:16,401 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2020-10-28 09:08:16,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:16,402 INFO L225 Difference]: With dead ends: 134 [2020-10-28 09:08:16,402 INFO L226 Difference]: Without dead ends: 78 [2020-10-28 09:08:16,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:08:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-28 09:08:16,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-28 09:08:16,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-28 09:08:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2020-10-28 09:08:16,418 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 72 [2020-10-28 09:08:16,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:16,419 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2020-10-28 09:08:16,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:08:16,419 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2020-10-28 09:08:16,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 09:08:16,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:16,420 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:16,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:08:16,420 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:16,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:16,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1865115889, now seen corresponding path program 9 times [2020-10-28 09:08:16,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:16,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530442934] [2020-10-28 09:08:16,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:16,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:16,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:18,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:21,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:21,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 09:08:21,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:08:21,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:08:21,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:21,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:08:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 09:08:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 09:08:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:21,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:21,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:21,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:21,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:21,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:21,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:21,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:21,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:21,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:21,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 09:08:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:21,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:21,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:21,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:21,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 09:08:21,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:21,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-28 09:08:21,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:21,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:08:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 09:08:21,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:21,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:08:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:21,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:21,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:21,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:21,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:21,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:21,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:21,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:08:21,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:21,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:08:21,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:21,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 09:08:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:21,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:21,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:21,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:21,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:21,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:21,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:21,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:08:21,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:21,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:08:21,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 65 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-28 09:08:22,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530442934] [2020-10-28 09:08:22,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:22,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:08:22,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116566730] [2020-10-28 09:08:22,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:08:22,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:22,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:08:22,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:08:22,014 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 15 states. [2020-10-28 09:08:22,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:22,931 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2020-10-28 09:08:22,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:08:22,933 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-28 09:08:22,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:22,934 INFO L225 Difference]: With dead ends: 91 [2020-10-28 09:08:22,934 INFO L226 Difference]: Without dead ends: 87 [2020-10-28 09:08:22,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:08:22,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-28 09:08:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-28 09:08:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 09:08:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2020-10-28 09:08:22,944 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 74 [2020-10-28 09:08:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:22,944 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2020-10-28 09:08:22,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:08:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2020-10-28 09:08:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 09:08:22,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:22,945 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:22,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:08:22,946 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:22,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:22,946 INFO L82 PathProgramCache]: Analyzing trace with hash -524284657, now seen corresponding path program 10 times [2020-10-28 09:08:22,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:22,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166502153] [2020-10-28 09:08:22,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:22,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:25,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:27,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:27,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 09:08:27,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:08:27,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 09:08:27,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:27,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:08:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 09:08:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 09:08:27,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:28,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:28,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:28,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:28,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:28,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:28,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:28,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:28,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:28,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:28,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 09:08:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:28,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:28,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:28,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 09:08:28,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:28,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 09:08:28,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:28,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:08:28,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:08:28,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 09:08:28,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:28,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:08:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:28,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:28,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:28,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:28,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:28,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:28,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:28,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:28,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:28,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:28,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:28,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:28,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 09:08:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:28,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:28,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:28,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:28,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:28,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:28,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:28,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:28,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:28,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:08:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:28,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:28,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:28,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:28,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:28,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:28,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:28,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:28,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 6 proven. 121 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-28 09:08:28,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166502153] [2020-10-28 09:08:28,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:28,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:08:28,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786699791] [2020-10-28 09:08:28,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:08:28,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:28,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:08:28,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:08:28,261 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 15 states. [2020-10-28 09:08:28,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:28,908 INFO L93 Difference]: Finished difference Result 127 states and 130 transitions. [2020-10-28 09:08:28,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:08:28,908 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2020-10-28 09:08:28,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:28,910 INFO L225 Difference]: With dead ends: 127 [2020-10-28 09:08:28,910 INFO L226 Difference]: Without dead ends: 88 [2020-10-28 09:08:28,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:08:28,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-28 09:08:28,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-28 09:08:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 09:08:28,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2020-10-28 09:08:28,922 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 82 [2020-10-28 09:08:28,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:28,923 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2020-10-28 09:08:28,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:08:28,923 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2020-10-28 09:08:28,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 09:08:28,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:28,924 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:28,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:08:28,926 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:28,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:28,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1851599189, now seen corresponding path program 11 times [2020-10-28 09:08:28,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:28,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802187946] [2020-10-28 09:08:28,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:28,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:28,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:31,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:33,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:33,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 09:08:33,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:08:33,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:08:33,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:33,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:08:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 09:08:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:08:33,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:33,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:33,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:33,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:33,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:33,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:33,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:33,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:33,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:33,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:33,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:33,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:33,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:33,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 09:08:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:33,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:34,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:34,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:08:34,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:34,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 09:08:34,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:34,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:08:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:08:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:08:34,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:34,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:08:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:34,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:34,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:34,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:34,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:34,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:34,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:34,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:34,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:34,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:34,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:34,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:08:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:34,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:34,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:34,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:34,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:34,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:34,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:34,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:34,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:34,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:34,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:34,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:34,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:08:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:34,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:34,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:34,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:34,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:34,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:34,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:34,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:34,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:34,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:34,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:34,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 6 proven. 144 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-28 09:08:34,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802187946] [2020-10-28 09:08:34,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:34,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:08:34,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286073260] [2020-10-28 09:08:34,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:08:34,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:34,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:08:34,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:08:34,275 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 16 states. [2020-10-28 09:08:34,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:34,891 INFO L93 Difference]: Finished difference Result 129 states and 132 transitions. [2020-10-28 09:08:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:08:34,891 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2020-10-28 09:08:34,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:34,893 INFO L225 Difference]: With dead ends: 129 [2020-10-28 09:08:34,893 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 09:08:34,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:08:34,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 09:08:34,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-28 09:08:34,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 09:08:34,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2020-10-28 09:08:34,909 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 84 [2020-10-28 09:08:34,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:34,909 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2020-10-28 09:08:34,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:08:34,909 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2020-10-28 09:08:34,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 09:08:34,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:34,912 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:34,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 09:08:34,912 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:34,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:34,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1795577529, now seen corresponding path program 12 times [2020-10-28 09:08:34,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:34,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373270250] [2020-10-28 09:08:34,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:34,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:34,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:37,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:39,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:39,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 09:08:39,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:08:39,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:08:39,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:39,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:08:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:08:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:08:39,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:40,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:40,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:40,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:40,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:40,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:40,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:40,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:40,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:40,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 09:08:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:40,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:40,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:40,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:40,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:08:40,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:40,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 09:08:40,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:40,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:40,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:40,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 09:08:40,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:40,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:40,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:08:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:40,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:40,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:40,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:40,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:40,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:40,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:40,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:40,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:40,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:40,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:40,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:40,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 09:08:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:40,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:40,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:40,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:40,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:40,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:40,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:40,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:40,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 09:08:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:40,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:40,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:40,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:40,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:40,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:40,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:40,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:40,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:40,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:40,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:40,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:40,186 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-28 09:08:40,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373270250] [2020-10-28 09:08:40,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:40,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:08:40,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607869315] [2020-10-28 09:08:40,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:08:40,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:40,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:08:40,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:08:40,189 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 11 states. [2020-10-28 09:08:40,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:40,350 INFO L93 Difference]: Finished difference Result 160 states and 164 transitions. [2020-10-28 09:08:40,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:08:40,351 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 86 [2020-10-28 09:08:40,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:40,352 INFO L225 Difference]: With dead ends: 160 [2020-10-28 09:08:40,352 INFO L226 Difference]: Without dead ends: 92 [2020-10-28 09:08:40,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:08:40,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-28 09:08:40,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-28 09:08:40,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 09:08:40,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2020-10-28 09:08:40,361 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 86 [2020-10-28 09:08:40,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:40,361 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2020-10-28 09:08:40,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:08:40,361 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2020-10-28 09:08:40,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 09:08:40,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:40,362 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:40,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 09:08:40,363 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:40,363 INFO L82 PathProgramCache]: Analyzing trace with hash 818396969, now seen corresponding path program 13 times [2020-10-28 09:08:40,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:40,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313948374] [2020-10-28 09:08:40,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:40,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:40,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:43,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:45,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:45,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 09:08:45,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:08:45,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:08:45,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:45,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:08:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 09:08:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 09:08:45,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:45,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:45,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:45,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:45,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:45,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:45,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:45,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:45,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:45,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:45,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:45,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:45,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:08:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:45,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:45,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:45,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:45,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:08:45,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:45,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-28 09:08:45,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:45,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:08:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 09:08:45,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:46,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:08:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:46,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:46,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:46,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:46,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:46,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:46,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:46,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:08:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:08:46,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:46,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:08:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:46,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:46,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:46,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:46,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:46,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:08:46,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:46,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:46,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:08:46,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:46,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:08:46,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:46,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:08:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:46,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:46,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:46,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:46,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:46,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:46,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:46,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:08:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:08:46,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-28 09:08:46,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313948374] [2020-10-28 09:08:46,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:46,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:08:46,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675889674] [2020-10-28 09:08:46,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:08:46,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:46,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:08:46,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:08:46,060 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 17 states. [2020-10-28 09:08:47,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:47,258 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2020-10-28 09:08:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:08:47,259 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 88 [2020-10-28 09:08:47,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:47,260 INFO L225 Difference]: With dead ends: 105 [2020-10-28 09:08:47,260 INFO L226 Difference]: Without dead ends: 101 [2020-10-28 09:08:47,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=836, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:08:47,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-28 09:08:47,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-10-28 09:08:47,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 09:08:47,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2020-10-28 09:08:47,271 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 88 [2020-10-28 09:08:47,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:47,271 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2020-10-28 09:08:47,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:08:47,272 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2020-10-28 09:08:47,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 09:08:47,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:47,273 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:47,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 09:08:47,273 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:47,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:47,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1644266711, now seen corresponding path program 14 times [2020-10-28 09:08:47,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:47,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283847898] [2020-10-28 09:08:47,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:47,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:47,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:51,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:52,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:52,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 09:08:52,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:08:52,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 09:08:52,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:52,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:08:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 09:08:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 09:08:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:52,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:52,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:52,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:52,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:52,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:52,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:52,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:52,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:52,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:52,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:52,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:52,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:52,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:08:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:52,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:52,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:52,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:08:52,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:52,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 09:08:52,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:52,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:08:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:08:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 09:08:52,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:52,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:08:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:52,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:52,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:52,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:52,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:52,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:52,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:52,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:52,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:52,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:08:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:52,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:52,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:52,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:52,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:52,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:52,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:52,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:52,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:52,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:52,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:52,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:52,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:08:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:52,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:52,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:52,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:52,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:52,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:52,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:52,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:52,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:52,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:08:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:52,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:52,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:52,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:52,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:52,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:52,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:52,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:52,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:52,670 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 8 proven. 169 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-28 09:08:52,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283847898] [2020-10-28 09:08:52,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:52,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:08:52,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599320173] [2020-10-28 09:08:52,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:08:52,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:52,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:08:52,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:08:52,672 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 17 states. [2020-10-28 09:08:53,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:53,326 INFO L93 Difference]: Finished difference Result 149 states and 152 transitions. [2020-10-28 09:08:53,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:08:53,327 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 96 [2020-10-28 09:08:53,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:53,328 INFO L225 Difference]: With dead ends: 149 [2020-10-28 09:08:53,328 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 09:08:53,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:08:53,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 09:08:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-28 09:08:53,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-28 09:08:53,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2020-10-28 09:08:53,339 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 96 [2020-10-28 09:08:53,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:53,339 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2020-10-28 09:08:53,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:08:53,339 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2020-10-28 09:08:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 09:08:53,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:53,341 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:53,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 09:08:53,341 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:53,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:53,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1151448507, now seen corresponding path program 15 times [2020-10-28 09:08:53,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:53,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997492705] [2020-10-28 09:08:53,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:53,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:53,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:56,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:58,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:58,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 09:08:58,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:08:58,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 09:08:58,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:58,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:08:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 09:08:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 09:08:58,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:58,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:58,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:58,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:58,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:58,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:58,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:58,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:58,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:58,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:58,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:08:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:58,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:58,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:58,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 09:08:58,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:58,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 09:08:58,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:58,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:08:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:08:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 09:08:58,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:58,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 09:08:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:58,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:58,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:58,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:58,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:58,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:58,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:58,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:58,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:58,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:08:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:58,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:58,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:58,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:58,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:58,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:58,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:58,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:58,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:08:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:58,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:58,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:58,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:58,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:58,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:58,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:58,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:58,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:58,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 09:08:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:58,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:58,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:58,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:58,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:58,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:58,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:58,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 8 proven. 196 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-28 09:08:58,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997492705] [2020-10-28 09:08:58,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:58,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:08:58,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268752659] [2020-10-28 09:08:58,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:08:58,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:58,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:08:58,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:08:58,778 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 18 states. [2020-10-28 09:08:59,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:59,583 INFO L93 Difference]: Finished difference Result 151 states and 154 transitions. [2020-10-28 09:08:59,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:08:59,584 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 98 [2020-10-28 09:08:59,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:59,585 INFO L225 Difference]: With dead ends: 151 [2020-10-28 09:08:59,585 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 09:08:59,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:08:59,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 09:08:59,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-28 09:08:59,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 09:08:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2020-10-28 09:08:59,596 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 98 [2020-10-28 09:08:59,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:59,597 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2020-10-28 09:08:59,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:08:59,597 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2020-10-28 09:08:59,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 09:08:59,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:59,598 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:59,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 09:08:59,599 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:59,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:59,599 INFO L82 PathProgramCache]: Analyzing trace with hash 442977, now seen corresponding path program 16 times [2020-10-28 09:08:59,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:59,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197970445] [2020-10-28 09:08:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:59,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:03,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:04,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 09:09:04,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:09:04,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:09:04,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:04,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:04,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:09:04,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:09:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 09:09:04,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:04,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:04,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:04,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:04,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:04,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:09:04,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:04,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:04,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:04,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:09:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:04,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:04,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 09:09:04,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:04,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 09:09:04,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:04,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 09:09:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:04,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:04,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:09:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:04,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:04,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:04,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:04,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:04,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:04,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:04,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:04,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:09:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:04,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:04,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:04,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:04,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:04,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:04,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:04,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:04,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:04,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:04,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:04,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:09:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:04,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:04,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:04,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:04,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:04,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:04,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:04,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:04,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:09:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:04,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:04,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:04,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:04,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:04,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:04,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:04,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:04,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:04,940 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2020-10-28 09:09:04,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197970445] [2020-10-28 09:09:04,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:04,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:09:04,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475384117] [2020-10-28 09:09:04,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:09:04,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:04,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:09:04,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:09:04,942 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 12 states. [2020-10-28 09:09:05,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:05,133 INFO L93 Difference]: Finished difference Result 186 states and 190 transitions. [2020-10-28 09:09:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:09:05,134 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2020-10-28 09:09:05,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:05,135 INFO L225 Difference]: With dead ends: 186 [2020-10-28 09:09:05,136 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 09:09:05,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:09:05,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 09:09:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-28 09:09:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 09:09:05,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2020-10-28 09:09:05,148 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 100 [2020-10-28 09:09:05,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:05,148 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2020-10-28 09:09:05,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:09:05,149 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2020-10-28 09:09:05,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 09:09:05,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:05,150 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:05,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 09:09:05,150 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:05,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:05,152 INFO L82 PathProgramCache]: Analyzing trace with hash 784327875, now seen corresponding path program 17 times [2020-10-28 09:09:05,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:05,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934282697] [2020-10-28 09:09:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:05,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:05,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:10,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:10,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 09:09:10,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:10,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:09:10,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:10,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:10,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:09:10,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 09:09:10,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 09:09:10,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:10,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:10,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:10,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:10,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:10,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:09:10,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:10,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:10,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:10,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:09:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:10,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:10,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:10,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 09:09:10,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 09:09:10,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:10,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:09:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:09:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 09:09:10,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:10,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 09:09:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:10,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:10,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:10,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:10,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:10,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:10,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:10,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:10,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:10,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 09:09:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:10,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:10,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:10,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:10,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:10,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:10,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:10,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:10,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:10,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:09:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:10,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:10,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:10,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:10,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:10,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:10,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:10,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:10,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:09:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:10,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:10,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:10,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:10,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:10,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:10,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:10,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:10,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:10,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:10,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:10,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 8 proven. 225 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-28 09:09:10,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934282697] [2020-10-28 09:09:10,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:10,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:09:10,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297857658] [2020-10-28 09:09:10,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:09:10,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:10,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:09:10,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:09:10,622 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 19 states. [2020-10-28 09:09:11,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:11,501 INFO L93 Difference]: Finished difference Result 155 states and 158 transitions. [2020-10-28 09:09:11,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:09:11,501 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 102 [2020-10-28 09:09:11,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:11,502 INFO L225 Difference]: With dead ends: 155 [2020-10-28 09:09:11,503 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 09:09:11,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:09:11,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 09:09:11,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-28 09:09:11,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 09:09:11,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2020-10-28 09:09:11,513 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 102 [2020-10-28 09:09:11,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:11,514 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2020-10-28 09:09:11,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:09:11,514 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2020-10-28 09:09:11,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 09:09:11,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:11,515 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:11,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 09:09:11,515 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:11,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:11,516 INFO L82 PathProgramCache]: Analyzing trace with hash 560706911, now seen corresponding path program 18 times [2020-10-28 09:09:11,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:11,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16102215] [2020-10-28 09:09:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:11,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:11,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:16,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:16,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 09:09:16,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:16,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:09:16,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:16,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:16,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:09:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:09:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:09:16,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:16,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:16,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:16,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:16,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:16,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:16,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:09:16,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:16,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:16,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:16,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:16,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:16,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:16,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:09:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:16,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:16,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:16,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:16,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 09:09:16,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:16,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-28 09:09:16,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:16,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 09:09:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:16,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:16,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:09:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:16,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:16,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:16,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:16,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:16,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:16,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:16,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:16,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:16,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:16,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:16,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:09:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:16,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:16,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:16,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:16,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:16,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:16,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:16,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:16,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:16,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:09:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:16,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:16,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:16,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:16,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:16,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:16,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:16,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:16,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:16,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:09:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:16,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:16,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:16,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:16,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:16,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:16,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 8 proven. 81 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-28 09:09:16,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16102215] [2020-10-28 09:09:16,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:16,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:09:16,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656146406] [2020-10-28 09:09:16,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:09:16,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:16,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:09:16,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:09:16,912 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 13 states. [2020-10-28 09:09:17,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:17,092 INFO L93 Difference]: Finished difference Result 192 states and 196 transitions. [2020-10-28 09:09:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:09:17,093 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 104 [2020-10-28 09:09:17,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:17,094 INFO L225 Difference]: With dead ends: 192 [2020-10-28 09:09:17,094 INFO L226 Difference]: Without dead ends: 110 [2020-10-28 09:09:17,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:09:17,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-28 09:09:17,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-28 09:09:17,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-28 09:09:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2020-10-28 09:09:17,110 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 104 [2020-10-28 09:09:17,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:17,110 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2020-10-28 09:09:17,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:09:17,111 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2020-10-28 09:09:17,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 09:09:17,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:17,112 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:17,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 09:09:17,112 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:17,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:17,113 INFO L82 PathProgramCache]: Analyzing trace with hash 807982785, now seen corresponding path program 19 times [2020-10-28 09:09:17,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:17,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102475691] [2020-10-28 09:09:17,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:22,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:22,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 09:09:22,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:22,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:09:22,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:22,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:09:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 09:09:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 09:09:22,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:22,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:22,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:22,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:22,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:22,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:09:22,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:22,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:22,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:22,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:22,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:22,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:22,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 09:09:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:22,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:22,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:22,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 09:09:22,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:22,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 09:09:22,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:22,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:22,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:09:22,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:09:22,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 09:09:22,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:22,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:09:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:22,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:22,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:22,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:22,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:22,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:22,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:22,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:22,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:22,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:22,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:22,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:22,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:09:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:22,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:22,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:22,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:22,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:22,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:22,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:22,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:22,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:22,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:22,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:22,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 09:09:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:22,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:22,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:22,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:22,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:22,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:22,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:22,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:22,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:22,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:22,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:22,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:09:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:22,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:22,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:22,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:22,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:22,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:22,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:22,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:22,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:22,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 8 proven. 256 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-28 09:09:22,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102475691] [2020-10-28 09:09:22,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:22,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:09:22,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725749302] [2020-10-28 09:09:22,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:09:22,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:22,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:09:22,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:09:22,615 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 20 states. [2020-10-28 09:09:23,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:23,534 INFO L93 Difference]: Finished difference Result 159 states and 162 transitions. [2020-10-28 09:09:23,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 09:09:23,535 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 106 [2020-10-28 09:09:23,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:23,537 INFO L225 Difference]: With dead ends: 159 [2020-10-28 09:09:23,537 INFO L226 Difference]: Without dead ends: 112 [2020-10-28 09:09:23,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:09:23,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-28 09:09:23,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-28 09:09:23,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-28 09:09:23,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2020-10-28 09:09:23,548 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 106 [2020-10-28 09:09:23,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:23,548 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2020-10-28 09:09:23,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:09:23,548 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2020-10-28 09:09:23,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 09:09:23,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:23,550 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:23,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 09:09:23,550 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:23,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:23,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1818238941, now seen corresponding path program 20 times [2020-10-28 09:09:23,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:23,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890713182] [2020-10-28 09:09:23,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:23,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:23,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:28,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:28,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 09:09:28,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:28,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:09:28,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:28,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:09:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 09:09:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 09:09:28,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:28,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:28,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:28,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:28,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:28,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:28,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:09:28,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:28,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:28,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:28,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 09:09:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:28,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:28,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:28,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 09:09:28,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:28,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 09:09:28,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:28,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:09:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:09:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 09:09:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:29,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:09:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:29,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:29,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:29,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:29,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:29,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:29,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:29,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:29,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:29,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:29,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:29,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:29,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:09:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:29,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:29,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:29,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:29,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:29,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:29,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:29,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:29,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:29,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:29,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:29,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:29,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:09:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:29,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:29,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:29,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:29,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:29,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:29,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:29,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:29,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:29,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:29,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:29,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:29,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:09:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:29,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:29,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:29,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:29,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:29,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:29,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:29,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 8 proven. 289 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-28 09:09:29,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890713182] [2020-10-28 09:09:29,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:29,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:09:29,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870118570] [2020-10-28 09:09:29,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:09:29,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:29,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:09:29,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:09:29,123 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 21 states. [2020-10-28 09:09:30,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:30,112 INFO L93 Difference]: Finished difference Result 161 states and 164 transitions. [2020-10-28 09:09:30,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:09:30,113 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 108 [2020-10-28 09:09:30,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:30,114 INFO L225 Difference]: With dead ends: 161 [2020-10-28 09:09:30,115 INFO L226 Difference]: Without dead ends: 114 [2020-10-28 09:09:30,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 09:09:30,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-28 09:09:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-28 09:09:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-28 09:09:30,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2020-10-28 09:09:30,126 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 108 [2020-10-28 09:09:30,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:30,126 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2020-10-28 09:09:30,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:09:30,127 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2020-10-28 09:09:30,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 09:09:30,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:30,128 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:30,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 09:09:30,128 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:30,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:30,129 INFO L82 PathProgramCache]: Analyzing trace with hash 2011795961, now seen corresponding path program 21 times [2020-10-28 09:09:30,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:30,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589869450] [2020-10-28 09:09:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:30,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:30,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:35,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 09:09:35,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:35,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:09:35,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:35,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:09:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:09:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 09:09:35,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:35,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:35,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:35,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:35,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:35,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:09:35,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:35,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:35,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:35,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 09:09:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:35,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:35,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 09:09:35,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:35,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-28 09:09:35,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:35,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 09:09:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:35,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:35,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 09:09:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:35,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:35,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:35,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:35,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:35,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:35,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:35,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:35,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:09:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:35,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:35,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:35,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:35,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:35,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:35,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:35,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:09:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:35,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:35,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:35,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:35,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:35,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:35,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:35,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:35,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:35,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:35,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 09:09:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:35,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:35,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:35,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:35,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:35,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:35,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:35,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:35,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 8 proven. 100 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-28 09:09:35,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589869450] [2020-10-28 09:09:35,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:35,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:09:35,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721443195] [2020-10-28 09:09:35,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:09:35,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:35,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:09:35,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:09:35,552 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 14 states. [2020-10-28 09:09:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:35,744 INFO L93 Difference]: Finished difference Result 202 states and 206 transitions. [2020-10-28 09:09:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:09:35,744 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 110 [2020-10-28 09:09:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:35,746 INFO L225 Difference]: With dead ends: 202 [2020-10-28 09:09:35,746 INFO L226 Difference]: Without dead ends: 116 [2020-10-28 09:09:35,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:09:35,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-28 09:09:35,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-28 09:09:35,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-28 09:09:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2020-10-28 09:09:35,756 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 110 [2020-10-28 09:09:35,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:35,757 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2020-10-28 09:09:35,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:09:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2020-10-28 09:09:35,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 09:09:35,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:35,758 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:35,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 09:09:35,758 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:35,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:35,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1297309221, now seen corresponding path program 22 times [2020-10-28 09:09:35,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:35,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473004817] [2020-10-28 09:09:35,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:35,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:40,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:40,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 09:09:40,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:40,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:09:40,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:40,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:40,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:09:40,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 09:09:40,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 09:09:40,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:40,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:40,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:40,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:40,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:40,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:40,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:09:40,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:40,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:40,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:40,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:40,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:40,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:40,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 09:09:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:40,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:40,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:40,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 09:09:40,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:40,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 09:09:40,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:40,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:40,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:09:40,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:09:40,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 09:09:40,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:41,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:09:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:41,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:41,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:41,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:41,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:41,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:41,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:41,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:41,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:41,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:09:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:41,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:41,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:41,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:41,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:41,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:41,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:41,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:41,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:41,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:41,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:41,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:41,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:09:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:41,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:41,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:41,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:41,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:41,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:41,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:41,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:41,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:41,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:41,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:41,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:41,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:09:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:41,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:41,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:41,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:41,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:41,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:41,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:41,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:41,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 8 proven. 324 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-28 09:09:41,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473004817] [2020-10-28 09:09:41,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:41,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 09:09:41,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401989791] [2020-10-28 09:09:41,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 09:09:41,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:41,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 09:09:41,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:09:41,339 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 22 states. [2020-10-28 09:09:42,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:42,309 INFO L93 Difference]: Finished difference Result 165 states and 168 transitions. [2020-10-28 09:09:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 09:09:42,310 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 112 [2020-10-28 09:09:42,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:42,311 INFO L225 Difference]: With dead ends: 165 [2020-10-28 09:09:42,311 INFO L226 Difference]: Without dead ends: 118 [2020-10-28 09:09:42,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-28 09:09:42,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-28 09:09:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-28 09:09:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-28 09:09:42,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2020-10-28 09:09:42,322 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 112 [2020-10-28 09:09:42,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:42,322 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2020-10-28 09:09:42,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 09:09:42,322 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2020-10-28 09:09:42,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 09:09:42,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:42,323 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:42,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 09:09:42,323 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:42,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:42,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1562217591, now seen corresponding path program 23 times [2020-10-28 09:09:42,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:42,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181698460] [2020-10-28 09:09:42,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:42,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:42,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:47,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:47,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 09:09:47,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:47,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 09:09:47,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:47,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:47,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:09:47,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:09:47,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 09:09:47,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:47,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:47,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:47,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:47,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:47,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:47,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:09:47,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:47,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:47,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:47,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:47,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:47,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:47,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 09:09:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:47,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:47,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:47,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:47,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 09:09:47,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:47,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-28 09:09:47,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:47,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 09:09:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:47,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:47,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:09:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:47,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:47,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:47,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:47,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:47,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:47,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:47,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:47,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:47,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:47,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:47,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:47,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 09:09:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:47,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:47,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:47,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:47,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:47,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:47,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:47,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:47,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:47,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:47,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:47,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:47,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:09:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:47,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:47,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:47,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:47,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:47,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:47,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:47,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:47,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:47,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:47,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:47,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:47,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 09:09:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:47,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:47,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:47,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:47,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:47,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:47,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:47,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:47,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:47,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:47,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:47,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 8 proven. 121 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2020-10-28 09:09:47,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181698460] [2020-10-28 09:09:47,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:47,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:09:47,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402726725] [2020-10-28 09:09:47,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:09:47,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:47,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:09:47,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:09:47,781 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 15 states. [2020-10-28 09:09:48,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:48,014 INFO L93 Difference]: Finished difference Result 208 states and 212 transitions. [2020-10-28 09:09:48,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:09:48,014 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 114 [2020-10-28 09:09:48,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:48,016 INFO L225 Difference]: With dead ends: 208 [2020-10-28 09:09:48,016 INFO L226 Difference]: Without dead ends: 120 [2020-10-28 09:09:48,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:09:48,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-28 09:09:48,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-28 09:09:48,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-28 09:09:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2020-10-28 09:09:48,028 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 114 [2020-10-28 09:09:48,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:48,028 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2020-10-28 09:09:48,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:09:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2020-10-28 09:09:48,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 09:09:48,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:48,029 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:48,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 09:09:48,030 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:48,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:48,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1580325721, now seen corresponding path program 24 times [2020-10-28 09:09:48,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:48,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753515881] [2020-10-28 09:09:48,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:48,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:48,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:53,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:53,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 09:09:53,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:53,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 09:09:53,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:53,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:53,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 09:09:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 09:09:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 09:09:53,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:53,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:53,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:53,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:53,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:53,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:09:53,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:53,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:53,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 09:09:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:53,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:53,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:53,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 09:09:53,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:53,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 09:09:53,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:53,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 09:09:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:09:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 09:09:53,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:53,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:09:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:53,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:53,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:53,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:53,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:53,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:53,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:53,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:53,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:53,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:53,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:53,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:53,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:09:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:53,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:53,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:53,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:53,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:53,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:53,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:53,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:53,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:09:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:53,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:53,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:53,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:53,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:53,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:53,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:53,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:53,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:53,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:53,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:53,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:53,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 09:09:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:53,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:53,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:53,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:53,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:53,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:53,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:53,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:53,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:53,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:53,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:53,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 8 proven. 361 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-10-28 09:09:53,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753515881] [2020-10-28 09:09:53,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:53,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 09:09:53,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209579444] [2020-10-28 09:09:53,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 09:09:53,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:53,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 09:09:53,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:09:53,715 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 23 states. [2020-10-28 09:09:54,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:54,722 INFO L93 Difference]: Finished difference Result 169 states and 172 transitions. [2020-10-28 09:09:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:09:54,723 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 116 [2020-10-28 09:09:54,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:54,725 INFO L225 Difference]: With dead ends: 169 [2020-10-28 09:09:54,725 INFO L226 Difference]: Without dead ends: 122 [2020-10-28 09:09:54,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-28 09:09:54,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-28 09:09:54,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-28 09:09:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-28 09:09:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2020-10-28 09:09:54,735 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 116 [2020-10-28 09:09:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:54,735 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2020-10-28 09:09:54,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 09:09:54,735 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2020-10-28 09:09:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 09:09:54,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:54,736 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:54,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 09:09:54,736 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:54,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:54,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1010458229, now seen corresponding path program 25 times [2020-10-28 09:09:54,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:54,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497053624] [2020-10-28 09:09:54,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:54,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:54,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:59,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:59,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 09:09:59,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:59,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 09:09:59,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:59,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:09:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 09:09:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 09:09:59,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:59,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:59,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:59,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:59,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:59,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:09:59,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:59,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:59,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:59,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:59,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:59,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:59,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 09:09:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:59,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:00,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:00,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 09:10:00,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:00,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-28 09:10:00,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:00,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:00,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:10:00,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:10:00,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 09:10:00,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:00,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:10:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:00,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:00,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:00,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:00,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:00,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:00,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:00,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:00,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:00,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:10:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:00,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:00,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:00,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:00,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:00,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:00,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:10:00,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 09:10:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:00,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:00,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:00,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:00,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:00,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:00,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:00,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:00,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:00,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:00,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-28 09:10:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:00,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:00,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:00,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:00,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:00,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:00,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:00,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 8 proven. 400 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-10-28 09:10:00,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497053624] [2020-10-28 09:10:00,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:10:00,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 09:10:00,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140367488] [2020-10-28 09:10:00,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 09:10:00,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:10:00,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 09:10:00,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:10:00,476 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 24 states. [2020-10-28 09:10:01,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:10:01,625 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2020-10-28 09:10:01,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 09:10:01,625 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 118 [2020-10-28 09:10:01,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:10:01,627 INFO L225 Difference]: With dead ends: 171 [2020-10-28 09:10:01,627 INFO L226 Difference]: Without dead ends: 124 [2020-10-28 09:10:01,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-28 09:10:01,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-28 09:10:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-28 09:10:01,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-28 09:10:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2020-10-28 09:10:01,638 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 118 [2020-10-28 09:10:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:10:01,638 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2020-10-28 09:10:01,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 09:10:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2020-10-28 09:10:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 09:10:01,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:10:01,639 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:10:01,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 09:10:01,639 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:10:01,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:10:01,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1171354991, now seen corresponding path program 26 times [2020-10-28 09:10:01,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:10:01,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806326781] [2020-10-28 09:10:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:10:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:01,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:01,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:06,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:06,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 09:10:06,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:10:06,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 09:10:06,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:06,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:10:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:10:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:10:06,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:06,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:10:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:06,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:06,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:06,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:10:06,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:06,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:10:06,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:06,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:06,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:06,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:10:06,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:06,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:06,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 09:10:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:06,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:06,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:07,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:07,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 09:10:07,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:10:07,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 09:10:07,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:07,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:07,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:07,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 09:10:07,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:07,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:07,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:10:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:07,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:07,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:07,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:07,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:07,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:07,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:07,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:07,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:10:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:07,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:07,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:07,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:07,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:07,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:07,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:07,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:07,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:10:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:07,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:07,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:07,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:07,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:07,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:07,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:07,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:07,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:07,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:07,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:10:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:07,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:07,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:07,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:07,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:07,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:07,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:07,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 8 proven. 144 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2020-10-28 09:10:07,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806326781] [2020-10-28 09:10:07,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:10:07,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:10:07,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624388056] [2020-10-28 09:10:07,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:10:07,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:10:07,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:10:07,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:10:07,153 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 16 states. [2020-10-28 09:10:07,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:10:07,405 INFO L93 Difference]: Finished difference Result 218 states and 222 transitions. [2020-10-28 09:10:07,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:10:07,406 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 120 [2020-10-28 09:10:07,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:10:07,407 INFO L225 Difference]: With dead ends: 218 [2020-10-28 09:10:07,407 INFO L226 Difference]: Without dead ends: 126 [2020-10-28 09:10:07,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:10:07,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-28 09:10:07,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-28 09:10:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-28 09:10:07,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2020-10-28 09:10:07,415 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 120 [2020-10-28 09:10:07,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:10:07,416 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2020-10-28 09:10:07,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:10:07,416 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2020-10-28 09:10:07,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 09:10:07,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:10:07,417 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 13, 13, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:10:07,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 09:10:07,417 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:10:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:10:07,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1972414451, now seen corresponding path program 27 times [2020-10-28 09:10:07,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:10:07,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544206389] [2020-10-28 09:10:07,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:10:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:07,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:07,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:12,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:12,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 09:10:12,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:10:12,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:10:12,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:12,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:10:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 09:10:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 09:10:12,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:12,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:10:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:12,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:12,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:12,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:10:12,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:12,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:10:12,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:12,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:10:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:12,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:12,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 09:10:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:12,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:12,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:12,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 09:10:12,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:12,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 09:10:12,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:12,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:12,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:10:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:10:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 09:10:12,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:13,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 09:10:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:13,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:13,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:13,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:13,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:13,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:13,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:13,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:13,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:13,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:13,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:13,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:10:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:13,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:13,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:13,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:13,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:13,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:13,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:13,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:13,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:13,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 09:10:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:13,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:13,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:13,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:13,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:13,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:13,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:13,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:13,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:13,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 09:10:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:13,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:13,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:13,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:13,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:13,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:13,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:13,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:13,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:13,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:13,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 8 proven. 441 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-28 09:10:13,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544206389] [2020-10-28 09:10:13,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:10:13,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 09:10:13,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689256569] [2020-10-28 09:10:13,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 09:10:13,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:10:13,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 09:10:13,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:10:13,121 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 25 states. [2020-10-28 09:10:14,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:10:14,293 INFO L93 Difference]: Finished difference Result 175 states and 178 transitions. [2020-10-28 09:10:14,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:10:14,294 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 122 [2020-10-28 09:10:14,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:10:14,295 INFO L225 Difference]: With dead ends: 175 [2020-10-28 09:10:14,296 INFO L226 Difference]: Without dead ends: 128 [2020-10-28 09:10:14,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-28 09:10:14,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-28 09:10:14,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2020-10-28 09:10:14,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-28 09:10:14,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2020-10-28 09:10:14,305 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 122 [2020-10-28 09:10:14,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:10:14,306 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2020-10-28 09:10:14,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 09:10:14,306 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2020-10-28 09:10:14,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 09:10:14,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:10:14,306 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 13, 13, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:10:14,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 09:10:14,307 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:10:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:10:14,307 INFO L82 PathProgramCache]: Analyzing trace with hash -149394289, now seen corresponding path program 28 times [2020-10-28 09:10:14,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:10:14,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881244923] [2020-10-28 09:10:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:10:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:14,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:14,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:19,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:19,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 09:10:19,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:10:19,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 09:10:19,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:19,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:19,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:10:19,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 09:10:19,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 09:10:19,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:19,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:10:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:19,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:19,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:19,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:10:19,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:19,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:10:19,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:19,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:19,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:19,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:10:19,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:19,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 09:10:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:19,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:19,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:19,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 09:10:19,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:19,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-28 09:10:19,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:19,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:10:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:10:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 09:10:19,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:20,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:10:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:20,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:20,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:20,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:20,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:20,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:10:20,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:20,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:20,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:20,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:20,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:10:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:20,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:20,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:20,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:20,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:10:20,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:20,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:20,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 09:10:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:20,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:20,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:20,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:20,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:20,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:20,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:20,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:20,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:20,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:20,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:20,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:20,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 09:10:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:20,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:20,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:20,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:20,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:20,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:20,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:20,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:20,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:20,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 8 proven. 484 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-28 09:10:20,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881244923] [2020-10-28 09:10:20,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:10:20,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:10:20,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651134447] [2020-10-28 09:10:20,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:10:20,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:10:20,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:10:20,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:10:20,119 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 26 states. [2020-10-28 09:10:21,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:10:21,408 INFO L93 Difference]: Finished difference Result 177 states and 180 transitions. [2020-10-28 09:10:21,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 09:10:21,409 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 124 [2020-10-28 09:10:21,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:10:21,411 INFO L225 Difference]: With dead ends: 177 [2020-10-28 09:10:21,411 INFO L226 Difference]: Without dead ends: 130 [2020-10-28 09:10:21,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-28 09:10:21,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-28 09:10:21,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2020-10-28 09:10:21,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-28 09:10:21,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2020-10-28 09:10:21,420 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 124 [2020-10-28 09:10:21,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:10:21,420 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2020-10-28 09:10:21,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:10:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2020-10-28 09:10:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 09:10:21,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:10:21,421 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 13, 13, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:10:21,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-28 09:10:21,422 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:10:21,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:10:21,422 INFO L82 PathProgramCache]: Analyzing trace with hash 901872171, now seen corresponding path program 29 times [2020-10-28 09:10:21,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:10:21,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416435224] [2020-10-28 09:10:21,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:10:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:21,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:26,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:26,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 09:10:26,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:10:26,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 09:10:26,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:26,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:10:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:10:26,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 09:10:26,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:26,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:10:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:26,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:26,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:26,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:10:26,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:26,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:10:26,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:26,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:26,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:26,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:10:26,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:26,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:26,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 09:10:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:26,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:26,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:27,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:27,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 09:10:27,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:10:27,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-28 09:10:27,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:27,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 09:10:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:27,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:27,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:10:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:27,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:27,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:27,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:27,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:27,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:27,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:27,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:27,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:27,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 09:10:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:27,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:27,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:27,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:27,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:27,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:27,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:27,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:27,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:27,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:27,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-28 09:10:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:27,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:27,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:27,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:27,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:27,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:27,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:27,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:27,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:27,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 09:10:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:27,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:27,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:27,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:27,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:10:27,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:27,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 8 proven. 169 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2020-10-28 09:10:27,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416435224] [2020-10-28 09:10:27,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:10:27,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:10:27,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980507202] [2020-10-28 09:10:27,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:10:27,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:10:27,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:10:27,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:10:27,070 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand 17 states. [2020-10-28 09:10:27,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:10:27,339 INFO L93 Difference]: Finished difference Result 228 states and 232 transitions. [2020-10-28 09:10:27,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:10:27,340 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 126 [2020-10-28 09:10:27,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:10:27,342 INFO L225 Difference]: With dead ends: 228 [2020-10-28 09:10:27,342 INFO L226 Difference]: Without dead ends: 132 [2020-10-28 09:10:27,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:10:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-28 09:10:27,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-28 09:10:27,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-28 09:10:27,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2020-10-28 09:10:27,354 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 126 [2020-10-28 09:10:27,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:10:27,355 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2020-10-28 09:10:27,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:10:27,355 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2020-10-28 09:10:27,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 09:10:27,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:10:27,356 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 14, 14, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:10:27,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-28 09:10:27,357 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:10:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:10:27,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1266907635, now seen corresponding path program 30 times [2020-10-28 09:10:27,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:10:27,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468382185] [2020-10-28 09:10:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:10:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:27,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:27,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:32,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:32,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 09:10:32,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:10:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 09:10:32,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:32,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 09:10:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 09:10:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 09:10:32,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:32,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:10:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:32,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:32,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:32,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:10:32,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:32,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:10:32,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:32,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:10:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:32,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:32,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 09:10:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:32,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:32,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:32,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 09:10:32,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:32,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-28 09:10:32,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:32,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:32,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 09:10:32,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:10:32,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 09:10:32,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:33,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:10:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:33,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:33,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:33,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:33,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:33,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:10:33,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:33,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:33,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:33,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:33,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:33,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:33,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:10:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:33,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:33,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:33,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:33,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:10:33,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:33,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:33,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:33,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:33,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:33,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:33,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:10:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:33,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:33,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:33,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:33,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:33,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:10:33,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:33,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:33,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:33,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:33,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:33,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:33,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-28 09:10:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:33,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:33,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:33,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:33,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:33,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:10:33,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:33,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:33,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:33,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:33,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:33,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 8 proven. 529 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-28 09:10:33,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468382185] [2020-10-28 09:10:33,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:10:33,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 09:10:33,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173568521] [2020-10-28 09:10:33,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 09:10:33,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:10:33,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 09:10:33,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:10:33,507 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 27 states. [2020-10-28 09:10:35,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:10:35,031 INFO L93 Difference]: Finished difference Result 181 states and 184 transitions. [2020-10-28 09:10:35,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:10:35,032 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 128 [2020-10-28 09:10:35,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:10:35,034 INFO L225 Difference]: With dead ends: 181 [2020-10-28 09:10:35,034 INFO L226 Difference]: Without dead ends: 134 [2020-10-28 09:10:35,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-28 09:10:35,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-28 09:10:35,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2020-10-28 09:10:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-28 09:10:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2020-10-28 09:10:35,045 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 128 [2020-10-28 09:10:35,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:10:35,046 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2020-10-28 09:10:35,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 09:10:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2020-10-28 09:10:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 09:10:35,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:10:35,047 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 14, 14, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:10:35,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-28 09:10:35,047 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:10:35,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:10:35,048 INFO L82 PathProgramCache]: Analyzing trace with hash 713370665, now seen corresponding path program 31 times [2020-10-28 09:10:35,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:10:35,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541888282] [2020-10-28 09:10:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:10:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:35,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:40,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:40,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 09:10:40,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:10:40,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:10:40,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:40,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:10:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:10:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 09:10:40,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:40,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:10:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:40,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:40,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:40,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:10:40,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:40,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:10:40,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:40,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:40,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:40,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:10:40,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:40,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:10:40,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 09:10:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:40,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:41,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:41,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 09:10:41,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:10:41,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-10-28 09:10:41,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:41,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 09:10:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:41,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:41,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:10:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:41,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:41,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:41,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:41,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:41,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:10:41,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:41,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:41,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:41,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:41,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 09:10:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:41,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:41,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:41,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:41,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:41,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:41,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:41,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:41,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:41,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 09:10:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:41,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:41,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:41,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:41,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:41,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:41,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:41,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:41,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:41,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:41,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:41,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:41,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 09:10:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:41,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:41,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:41,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:41,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:41,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:10:41,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:41,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:41,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:41,106 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 8 proven. 196 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2020-10-28 09:10:41,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541888282] [2020-10-28 09:10:41,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:10:41,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:10:41,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504859794] [2020-10-28 09:10:41,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:10:41,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:10:41,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:10:41,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:10:41,108 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 18 states. [2020-10-28 09:10:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:10:41,391 INFO L93 Difference]: Finished difference Result 234 states and 238 transitions. [2020-10-28 09:10:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:10:41,392 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 130 [2020-10-28 09:10:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:10:41,393 INFO L225 Difference]: With dead ends: 234 [2020-10-28 09:10:41,393 INFO L226 Difference]: Without dead ends: 136 [2020-10-28 09:10:41,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:10:41,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-28 09:10:41,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2020-10-28 09:10:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-28 09:10:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2020-10-28 09:10:41,403 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 130 [2020-10-28 09:10:41,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:10:41,403 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2020-10-28 09:10:41,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:10:41,403 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2020-10-28 09:10:41,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 09:10:41,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:10:41,404 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 15, 15, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:10:41,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-28 09:10:41,405 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:10:41,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:10:41,405 INFO L82 PathProgramCache]: Analyzing trace with hash 2066970379, now seen corresponding path program 32 times [2020-10-28 09:10:41,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:10:41,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261923791] [2020-10-28 09:10:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:10:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:41,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking...