/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:19:44,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:19:44,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:19:44,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:19:44,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:19:44,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:19:44,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:19:44,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:19:44,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:19:44,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:19:44,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:19:44,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:19:44,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:19:44,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:19:44,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:19:44,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:19:44,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:19:44,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:19:44,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:19:44,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:19:44,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:19:44,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:19:44,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:19:44,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:19:44,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:19:44,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:19:44,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:19:44,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:19:44,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:19:44,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:19:44,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:19:44,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:19:44,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:19:44,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:19:44,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:19:44,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:19:44,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:19:44,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:19:44,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:19:44,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:19:44,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:19:44,937 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 [2020-09-25 02:19:44,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:19:44,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:19:44,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:19:44,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:19:44,965 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:19:44,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:19:44,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:19:44,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:19:44,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:19:44,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:19:44,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:19:44,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:19:44,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:19:44,966 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:19:44,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:19:44,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:19:44,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:19:44,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:19:44,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:19:44,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:19:44,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:19:44,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:19:44,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:19:44,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:19:44,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:19:44,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:19:44,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:19:44,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:19:44,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:19:44,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=true; [2020-09-25 02:19:45,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:19:45,497 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:19:45,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:19:45,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:19:45,507 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:19:45,508 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-09-25 02:19:45,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f428a43e/fbdc55e5e000476a8e2499e4f7bf3df7/FLAGc3236c6db [2020-09-25 02:19:46,281 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:19:46,284 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-09-25 02:19:46,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f428a43e/fbdc55e5e000476a8e2499e4f7bf3df7/FLAGc3236c6db [2020-09-25 02:19:46,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f428a43e/fbdc55e5e000476a8e2499e4f7bf3df7 [2020-09-25 02:19:46,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:19:46,567 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:19:46,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:46,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:19:46,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:19:46,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:46" (1/1) ... [2020-09-25 02:19:46,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ddb90c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:46, skipping insertion in model container [2020-09-25 02:19:46,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:46" (1/1) ... [2020-09-25 02:19:46,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:19:46,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:19:46,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:47,001 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:19:47,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:47,184 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:19:47,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:47 WrapperNode [2020-09-25 02:19:47,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:47,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:19:47,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:19:47,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:19:47,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:47" (1/1) ... [2020-09-25 02:19:47,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:47" (1/1) ... [2020-09-25 02:19:47,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:47" (1/1) ... [2020-09-25 02:19:47,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:47" (1/1) ... [2020-09-25 02:19:47,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:47" (1/1) ... [2020-09-25 02:19:47,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:47" (1/1) ... [2020-09-25 02:19:47,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:47" (1/1) ... [2020-09-25 02:19:47,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:19:47,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:19:47,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:19:47,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:19:47,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:19:47,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:19:47,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:19:47,338 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:19:47,338 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:19:47,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:19:47,338 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:19:47,338 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:19:47,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:19:47,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:19:47,339 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:19:47,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:19:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:19:48,265 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:19:48,265 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:19:48,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:48 BoogieIcfgContainer [2020-09-25 02:19:48,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:19:48,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:19:48,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:19:48,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:19:48,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:19:46" (1/3) ... [2020-09-25 02:19:48,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753d228a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:48, skipping insertion in model container [2020-09-25 02:19:48,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:47" (2/3) ... [2020-09-25 02:19:48,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753d228a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:48, skipping insertion in model container [2020-09-25 02:19:48,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:48" (3/3) ... [2020-09-25 02:19:48,286 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2020-09-25 02:19:48,298 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:19:48,308 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-09-25 02:19:48,327 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-09-25 02:19:48,362 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:19:48,363 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:19:48,363 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:19:48,363 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:19:48,363 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:19:48,364 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:19:48,364 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:19:48,364 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:19:48,405 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states. [2020-09-25 02:19:48,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 02:19:48,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:48,415 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] [2020-09-25 02:19:48,416 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:48,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:48,423 INFO L82 PathProgramCache]: Analyzing trace with hash 519309997, now seen corresponding path program 1 times [2020-09-25 02:19:48,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:48,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230405036] [2020-09-25 02:19:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:48,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:48,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:19:48,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:19:49,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-09-25 02:19:49,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:19:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 02:19:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:19:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:19:49,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:49,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:49,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:49,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:19:49,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:49,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:19:49,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:19:49,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230405036] [2020-09-25 02:19:49,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:49,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:19:49,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649796156] [2020-09-25 02:19:49,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:19:49,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:49,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:19:49,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:19:49,204 INFO L87 Difference]: Start difference. First operand 519 states. Second operand 6 states. [2020-09-25 02:19:50,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:50,991 INFO L93 Difference]: Finished difference Result 546 states and 624 transitions. [2020-09-25 02:19:50,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:19:50,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-25 02:19:50,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:51,034 INFO L225 Difference]: With dead ends: 546 [2020-09-25 02:19:51,035 INFO L226 Difference]: Without dead ends: 471 [2020-09-25 02:19:51,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:19:51,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-09-25 02:19:51,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 459. [2020-09-25 02:19:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-09-25 02:19:51,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 480 transitions. [2020-09-25 02:19:51,193 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 480 transitions. Word has length 25 [2020-09-25 02:19:51,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:51,194 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 480 transitions. [2020-09-25 02:19:51,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:19:51,195 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 480 transitions. [2020-09-25 02:19:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 02:19:51,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:51,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:51,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:19:51,198 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:51,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:51,199 INFO L82 PathProgramCache]: Analyzing trace with hash 775203426, now seen corresponding path program 1 times [2020-09-25 02:19:51,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:51,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555338615] [2020-09-25 02:19:51,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:51,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:51,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:51,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:51,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 02:19:51,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:19:51,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-09-25 02:19:51,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:51,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:19:51,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 02:19:51,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:19:51,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:51,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:51,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:51,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:51,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:19:51,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:51,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:19:51,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 02:19:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:19:51,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555338615] [2020-09-25 02:19:51,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:51,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:19:51,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999085527] [2020-09-25 02:19:51,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:19:51,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:51,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:19:51,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:19:51,735 INFO L87 Difference]: Start difference. First operand 459 states and 480 transitions. Second operand 6 states. [2020-09-25 02:19:53,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:53,089 INFO L93 Difference]: Finished difference Result 469 states and 490 transitions. [2020-09-25 02:19:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:19:53,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-09-25 02:19:53,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:53,094 INFO L225 Difference]: With dead ends: 469 [2020-09-25 02:19:53,094 INFO L226 Difference]: Without dead ends: 447 [2020-09-25 02:19:53,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:19:53,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-09-25 02:19:53,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2020-09-25 02:19:53,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-09-25 02:19:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 459 transitions. [2020-09-25 02:19:53,131 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 459 transitions. Word has length 30 [2020-09-25 02:19:53,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:53,132 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 459 transitions. [2020-09-25 02:19:53,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:19:53,132 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 459 transitions. [2020-09-25 02:19:53,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 02:19:53,134 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:53,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:53,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:19:53,135 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:53,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:53,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1526563962, now seen corresponding path program 1 times [2020-09-25 02:19:53,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:53,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122296259] [2020-09-25 02:19:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:53,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:53,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:53,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:53,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:53,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:55,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:55,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 02:19:55,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:19:55,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1859 [2020-09-25 02:19:55,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:19:55,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 02:19:55,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 02:19:55,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:55,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:55,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:55,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:55,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:19:55,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:55,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:19:55,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:55,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:19:55,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122296259] [2020-09-25 02:19:55,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:55,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 02:19:55,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939394794] [2020-09-25 02:19:55,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:19:55,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:55,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:19:55,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:19:55,248 INFO L87 Difference]: Start difference. First operand 447 states and 459 transitions. Second operand 11 states. [2020-09-25 02:19:56,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:56,910 INFO L93 Difference]: Finished difference Result 514 states and 530 transitions. [2020-09-25 02:19:56,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:19:56,912 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-09-25 02:19:56,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:56,917 INFO L225 Difference]: With dead ends: 514 [2020-09-25 02:19:56,918 INFO L226 Difference]: Without dead ends: 512 [2020-09-25 02:19:56,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-09-25 02:19:56,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-09-25 02:19:56,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 445. [2020-09-25 02:19:56,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-09-25 02:19:56,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 457 transitions. [2020-09-25 02:19:56,939 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 457 transitions. Word has length 47 [2020-09-25 02:19:56,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:56,940 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 457 transitions. [2020-09-25 02:19:56,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:19:56,941 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 457 transitions. [2020-09-25 02:19:56,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:19:56,952 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:56,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:56,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:19:56,953 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:56,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:56,954 INFO L82 PathProgramCache]: Analyzing trace with hash -344421966, now seen corresponding path program 1 times [2020-09-25 02:19:56,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:56,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462392938] [2020-09-25 02:19:56,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:57,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:57,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:57,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:57,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 02:19:57,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:19:57,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 833 [2020-09-25 02:19:57,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:57,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:19:57,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 02:19:57,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:19:57,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:57,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:57,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:57,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:57,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:19:57,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:57,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:19:57,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:57,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:57,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:57,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:57,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:19:57,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462392938] [2020-09-25 02:19:57,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:57,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:19:57,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670103920] [2020-09-25 02:19:57,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:19:57,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:57,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:19:57,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:19:57,883 INFO L87 Difference]: Start difference. First operand 445 states and 457 transitions. Second operand 6 states. [2020-09-25 02:19:58,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:58,937 INFO L93 Difference]: Finished difference Result 445 states and 457 transitions. [2020-09-25 02:19:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:19:58,937 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-25 02:19:58,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:58,940 INFO L225 Difference]: With dead ends: 445 [2020-09-25 02:19:58,941 INFO L226 Difference]: Without dead ends: 433 [2020-09-25 02:19:58,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:19:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-09-25 02:19:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2020-09-25 02:19:58,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-09-25 02:19:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 445 transitions. [2020-09-25 02:19:58,954 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 445 transitions. Word has length 52 [2020-09-25 02:19:58,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:58,955 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 445 transitions. [2020-09-25 02:19:58,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:19:58,955 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 445 transitions. [2020-09-25 02:19:58,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 02:19:58,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:58,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:58,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:19:58,957 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:58,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:58,958 INFO L82 PathProgramCache]: Analyzing trace with hash 784264785, now seen corresponding path program 1 times [2020-09-25 02:19:58,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:58,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825809878] [2020-09-25 02:19:58,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:58,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:59,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:59,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:59,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 02:19:59,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:19:59,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-09-25 02:19:59,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:59,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:19:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 02:19:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:19:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:59,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:59,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:59,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:59,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:19:59,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:59,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:19:59,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:59,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:59,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:59,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:59,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:19:59,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825809878] [2020-09-25 02:19:59,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:59,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 02:19:59,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871227576] [2020-09-25 02:19:59,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:19:59,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:59,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:19:59,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:19:59,478 INFO L87 Difference]: Start difference. First operand 433 states and 445 transitions. Second operand 9 states. [2020-09-25 02:20:01,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:01,576 INFO L93 Difference]: Finished difference Result 644 states and 663 transitions. [2020-09-25 02:20:01,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 02:20:01,576 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-25 02:20:01,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:01,582 INFO L225 Difference]: With dead ends: 644 [2020-09-25 02:20:01,583 INFO L226 Difference]: Without dead ends: 642 [2020-09-25 02:20:01,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-09-25 02:20:01,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-09-25 02:20:01,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 431. [2020-09-25 02:20:01,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-09-25 02:20:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 443 transitions. [2020-09-25 02:20:01,601 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 443 transitions. Word has length 57 [2020-09-25 02:20:01,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:01,602 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 443 transitions. [2020-09-25 02:20:01,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:20:01,602 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 443 transitions. [2020-09-25 02:20:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 02:20:01,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:01,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:20:01,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:20:01,606 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:01,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:01,607 INFO L82 PathProgramCache]: Analyzing trace with hash 2053600793, now seen corresponding path program 1 times [2020-09-25 02:20:01,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:01,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197637240] [2020-09-25 02:20:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:01,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:01,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:02,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:02,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 02:20:02,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:20:02,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-09-25 02:20:02,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:02,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:20:02,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 02:20:02,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:20:02,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:02,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:02,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:02,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:20:02,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:20:02,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:02,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:02,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:20:02,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197637240] [2020-09-25 02:20:02,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:20:02,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 02:20:02,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532394188] [2020-09-25 02:20:02,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:20:02,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:02,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:20:02,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:20:02,178 INFO L87 Difference]: Start difference. First operand 431 states and 443 transitions. Second operand 9 states. [2020-09-25 02:20:04,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:04,100 INFO L93 Difference]: Finished difference Result 508 states and 523 transitions. [2020-09-25 02:20:04,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 02:20:04,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-25 02:20:04,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:04,105 INFO L225 Difference]: With dead ends: 508 [2020-09-25 02:20:04,106 INFO L226 Difference]: Without dead ends: 506 [2020-09-25 02:20:04,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-09-25 02:20:04,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-09-25 02:20:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 429. [2020-09-25 02:20:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-09-25 02:20:04,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 441 transitions. [2020-09-25 02:20:04,119 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 441 transitions. Word has length 57 [2020-09-25 02:20:04,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:04,119 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 441 transitions. [2020-09-25 02:20:04,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:20:04,119 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 441 transitions. [2020-09-25 02:20:04,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 02:20:04,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:04,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:20:04,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:20:04,121 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:04,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:04,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1921870681, now seen corresponding path program 1 times [2020-09-25 02:20:04,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:04,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539806358] [2020-09-25 02:20:04,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:04,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:04,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:04,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:04,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 02:20:04,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:20:04,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-09-25 02:20:04,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:04,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:20:04,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 02:20:04,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:20:04,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:04,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:04,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:04,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:20:04,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:04,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:20:04,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:04,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:20:04,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539806358] [2020-09-25 02:20:04,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:20:04,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 02:20:04,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887563067] [2020-09-25 02:20:04,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:20:04,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:04,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:20:04,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:20:04,619 INFO L87 Difference]: Start difference. First operand 429 states and 441 transitions. Second operand 9 states. [2020-09-25 02:20:06,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:06,776 INFO L93 Difference]: Finished difference Result 602 states and 621 transitions. [2020-09-25 02:20:06,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 02:20:06,777 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-25 02:20:06,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:06,781 INFO L225 Difference]: With dead ends: 602 [2020-09-25 02:20:06,781 INFO L226 Difference]: Without dead ends: 600 [2020-09-25 02:20:06,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-09-25 02:20:06,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-09-25 02:20:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 427. [2020-09-25 02:20:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-09-25 02:20:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 439 transitions. [2020-09-25 02:20:06,798 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 439 transitions. Word has length 57 [2020-09-25 02:20:06,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:06,799 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 439 transitions. [2020-09-25 02:20:06,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:20:06,800 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 439 transitions. [2020-09-25 02:20:06,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 02:20:06,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:06,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:20:06,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:20:06,801 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:06,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:06,802 INFO L82 PathProgramCache]: Analyzing trace with hash -382650347, now seen corresponding path program 1 times [2020-09-25 02:20:06,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:06,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690145712] [2020-09-25 02:20:06,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:06,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:06,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:07,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:07,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:20:07,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:20:07,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1063 [2020-09-25 02:20:07,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:07,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:20:07,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 02:20:07,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 02:20:07,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:20:08,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:08,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:08,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:08,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:20:08,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:08,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:20:08,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:08,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:08,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:08,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:08,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:20:08,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690145712] [2020-09-25 02:20:08,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:20:08,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 02:20:08,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138965569] [2020-09-25 02:20:08,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:20:08,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:08,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:20:08,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:20:08,089 INFO L87 Difference]: Start difference. First operand 427 states and 439 transitions. Second operand 10 states. [2020-09-25 02:20:10,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:10,671 INFO L93 Difference]: Finished difference Result 622 states and 641 transitions. [2020-09-25 02:20:10,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 02:20:10,672 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-09-25 02:20:10,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:10,676 INFO L225 Difference]: With dead ends: 622 [2020-09-25 02:20:10,676 INFO L226 Difference]: Without dead ends: 620 [2020-09-25 02:20:10,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-09-25 02:20:10,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-09-25 02:20:10,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 472. [2020-09-25 02:20:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-09-25 02:20:10,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 489 transitions. [2020-09-25 02:20:10,692 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 489 transitions. Word has length 62 [2020-09-25 02:20:10,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:10,692 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 489 transitions. [2020-09-25 02:20:10,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:20:10,692 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 489 transitions. [2020-09-25 02:20:10,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 02:20:10,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:10,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:20:10,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:20:10,694 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:10,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:10,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1546196018, now seen corresponding path program 1 times [2020-09-25 02:20:10,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:10,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692447676] [2020-09-25 02:20:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:10,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:10,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:11,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:11,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:20:11,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:20:11,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-25 02:20:11,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:11,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:20:11,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 02:20:11,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 02:20:11,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:11,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:11,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:11,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:11,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:20:11,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:11,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:20:11,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:11,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:11,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:11,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:11,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:20:11,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692447676] [2020-09-25 02:20:11,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:20:11,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 02:20:11,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529286142] [2020-09-25 02:20:11,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:20:11,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:11,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:20:11,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:20:11,903 INFO L87 Difference]: Start difference. First operand 472 states and 489 transitions. Second operand 10 states. [2020-09-25 02:20:14,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:14,215 INFO L93 Difference]: Finished difference Result 486 states and 501 transitions. [2020-09-25 02:20:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:20:14,215 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-09-25 02:20:14,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:14,219 INFO L225 Difference]: With dead ends: 486 [2020-09-25 02:20:14,219 INFO L226 Difference]: Without dead ends: 474 [2020-09-25 02:20:14,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:20:14,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-09-25 02:20:14,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 472. [2020-09-25 02:20:14,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-09-25 02:20:14,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 488 transitions. [2020-09-25 02:20:14,234 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 488 transitions. Word has length 62 [2020-09-25 02:20:14,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:14,235 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 488 transitions. [2020-09-25 02:20:14,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:20:14,235 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 488 transitions. [2020-09-25 02:20:14,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 02:20:14,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:14,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:20:14,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:20:14,236 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:14,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:14,237 INFO L82 PathProgramCache]: Analyzing trace with hash 781872345, now seen corresponding path program 1 times [2020-09-25 02:20:14,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:14,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247713611] [2020-09-25 02:20:14,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:14,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:14,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:15,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:15,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:20:15,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:20:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-09-25 02:20:15,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:20:15,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 02:20:15,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 02:20:15,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:15,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:15,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:15,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:15,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:20:15,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:15,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:20:15,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:15,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:20:15,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247713611] [2020-09-25 02:20:15,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:20:15,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 02:20:15,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176696612] [2020-09-25 02:20:15,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:20:15,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:15,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:20:15,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:20:15,415 INFO L87 Difference]: Start difference. First operand 472 states and 488 transitions. Second operand 10 states. [2020-09-25 02:20:17,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:17,920 INFO L93 Difference]: Finished difference Result 582 states and 600 transitions. [2020-09-25 02:20:17,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 02:20:17,920 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-09-25 02:20:17,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:17,924 INFO L225 Difference]: With dead ends: 582 [2020-09-25 02:20:17,924 INFO L226 Difference]: Without dead ends: 580 [2020-09-25 02:20:17,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-09-25 02:20:17,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-09-25 02:20:17,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 472. [2020-09-25 02:20:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-09-25 02:20:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 487 transitions. [2020-09-25 02:20:17,938 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 487 transitions. Word has length 62 [2020-09-25 02:20:17,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:17,939 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 487 transitions. [2020-09-25 02:20:17,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:20:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 487 transitions. [2020-09-25 02:20:17,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 02:20:17,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:17,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:20:17,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 02:20:17,940 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:17,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:17,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1199808863, now seen corresponding path program 1 times [2020-09-25 02:20:17,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:17,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216911002] [2020-09-25 02:20:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:17,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:18,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:18,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:18,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:18,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:19,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:20,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:22,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:22,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 02:20:22,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:20:22,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:20:22,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:22,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:20:22,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 02:20:22,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 02:20:22,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:23,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:23,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:23,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:23,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:20:23,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:23,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:20:23,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:23,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:20:23,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216911002] [2020-09-25 02:20:23,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:20:23,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 02:20:23,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485162569] [2020-09-25 02:20:23,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:20:23,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:23,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:20:23,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:20:23,070 INFO L87 Difference]: Start difference. First operand 472 states and 487 transitions. Second operand 9 states. [2020-09-25 02:20:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:24,976 INFO L93 Difference]: Finished difference Result 556 states and 575 transitions. [2020-09-25 02:20:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:20:24,978 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-25 02:20:24,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:24,980 INFO L225 Difference]: With dead ends: 556 [2020-09-25 02:20:24,980 INFO L226 Difference]: Without dead ends: 554 [2020-09-25 02:20:24,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:20:24,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2020-09-25 02:20:24,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 470. [2020-09-25 02:20:24,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-09-25 02:20:24,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 485 transitions. [2020-09-25 02:20:24,998 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 485 transitions. Word has length 70 [2020-09-25 02:20:24,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:24,998 INFO L479 AbstractCegarLoop]: Abstraction has 470 states and 485 transitions. [2020-09-25 02:20:24,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:20:24,999 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 485 transitions. [2020-09-25 02:20:24,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 02:20:24,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:25,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:20:25,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 02:20:25,000 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:25,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:25,001 INFO L82 PathProgramCache]: Analyzing trace with hash 886846446, now seen corresponding path program 1 times [2020-09-25 02:20:25,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:25,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443248824] [2020-09-25 02:20:25,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:25,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:25,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:25,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:28,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:28,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 02:20:28,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:20:28,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3403 [2020-09-25 02:20:28,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:28,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:20:28,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 02:20:28,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:20:28,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:28,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:28,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:28,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:28,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:20:28,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:28,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:20:28,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:28,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:28,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:20:28,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443248824] [2020-09-25 02:20:28,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:20:28,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:20:28,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669041350] [2020-09-25 02:20:28,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:20:28,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:28,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:20:28,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:20:28,478 INFO L87 Difference]: Start difference. First operand 470 states and 485 transitions. Second operand 6 states. [2020-09-25 02:20:29,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:29,643 INFO L93 Difference]: Finished difference Result 470 states and 485 transitions. [2020-09-25 02:20:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:20:29,644 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-09-25 02:20:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:29,647 INFO L225 Difference]: With dead ends: 470 [2020-09-25 02:20:29,647 INFO L226 Difference]: Without dead ends: 399 [2020-09-25 02:20:29,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:20:29,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-09-25 02:20:29,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2020-09-25 02:20:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-09-25 02:20:29,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 410 transitions. [2020-09-25 02:20:29,657 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 410 transitions. Word has length 75 [2020-09-25 02:20:29,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:29,657 INFO L479 AbstractCegarLoop]: Abstraction has 399 states and 410 transitions. [2020-09-25 02:20:29,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:20:29,658 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 410 transitions. [2020-09-25 02:20:29,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 02:20:29,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:29,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:20:29,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 02:20:29,659 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:29,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:29,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1128385369, now seen corresponding path program 1 times [2020-09-25 02:20:29,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:29,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055974121] [2020-09-25 02:20:29,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:29,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:29,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:29,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:34,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:34,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 02:20:34,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:20:34,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4447 [2020-09-25 02:20:34,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:34,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:20:34,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 02:20:34,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 02:20:34,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:34,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:34,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:34,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:34,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:20:34,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:34,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:20:34,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:34,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:34,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:20:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:20:34,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055974121] [2020-09-25 02:20:34,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:20:34,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 02:20:34,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983175537] [2020-09-25 02:20:34,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:20:34,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:34,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:20:34,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:20:34,294 INFO L87 Difference]: Start difference. First operand 399 states and 410 transitions. Second operand 10 states.