/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/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:06:56,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:06:56,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:06:56,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:06:56,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:06:56,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:06:56,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:06:56,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:06:56,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:06:56,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:06:56,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:06:56,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:06:56,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:06:56,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:06:56,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:06:56,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:06:56,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:06:56,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:06:56,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:06:56,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:06:56,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:06:56,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:06:56,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:06:56,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:06:56,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:06:56,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:06:56,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:06:56,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:06:56,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:06:56,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:06:56,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:06:56,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:06:56,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:06:56,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:06:56,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:06:56,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:06:56,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:06:56,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:06:56,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:06:56,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:06:56,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:06:56,952 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 02:06:56,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:06:56,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:06:56,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:06:56,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:06:56,980 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:06:56,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:06:56,981 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:06:56,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:06:56,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:06:56,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:06:56,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:06:56,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:06:56,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:06:56,982 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:06:56,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:06:56,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:06:56,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:06:56,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:06:56,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:06:56,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:06:56,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:06:56,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:06:56,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:06:56,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:06:56,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:06:56,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:06:56,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:06:56,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:06:56,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:06:56,986 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 02:06:57,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:06:57,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:06:57,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:06:57,555 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:06:57,555 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:06:57,556 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-25 02:06:57,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de14af202/62624143b3d04fff85803d2040b32b43/FLAGce1592ee1 [2020-09-25 02:06:58,239 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:06:58,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-25 02:06:58,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de14af202/62624143b3d04fff85803d2040b32b43/FLAGce1592ee1 [2020-09-25 02:06:58,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de14af202/62624143b3d04fff85803d2040b32b43 [2020-09-25 02:06:58,598 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:06:58,604 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:06:58,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:06:58,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:06:58,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:06:58,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:06:58" (1/1) ... [2020-09-25 02:06:58,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@771a2091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:58, skipping insertion in model container [2020-09-25 02:06:58,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:06:58" (1/1) ... [2020-09-25 02:06:58,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:06:58,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:06:58,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:06:58,905 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:06:58,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:06:58,947 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:06:58,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:58 WrapperNode [2020-09-25 02:06:58,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:06:58,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:06:58,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:06:58,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:06:59,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:58" (1/1) ... [2020-09-25 02:06:59,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:58" (1/1) ... [2020-09-25 02:06:59,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:58" (1/1) ... [2020-09-25 02:06:59,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:58" (1/1) ... [2020-09-25 02:06:59,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:58" (1/1) ... [2020-09-25 02:06:59,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:58" (1/1) ... [2020-09-25 02:06:59,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:58" (1/1) ... [2020-09-25 02:06:59,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:06:59,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:06:59,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:06:59,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:06:59,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:58" (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 02:06:59,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:06:59,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:06:59,165 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 02:06:59,165 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:06:59,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:06:59,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:06:59,166 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 02:06:59,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:06:59,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:06:59,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:06:59,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:06:59,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:06:59,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:06:59,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:06:59,500 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:06:59,501 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:06:59,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:06:59 BoogieIcfgContainer [2020-09-25 02:06:59,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:06:59,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:06:59,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:06:59,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:06:59,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:06:58" (1/3) ... [2020-09-25 02:06:59,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dc709b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:06:59, skipping insertion in model container [2020-09-25 02:06:59,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:58" (2/3) ... [2020-09-25 02:06:59,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dc709b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:06:59, skipping insertion in model container [2020-09-25 02:06:59,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:06:59" (3/3) ... [2020-09-25 02:06:59,523 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-09-25 02:06:59,534 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:06:59,546 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:06:59,570 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:06:59,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:06:59,596 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:06:59,596 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:06:59,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:06:59,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:06:59,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:06:59,597 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:06:59,597 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:06:59,620 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-09-25 02:06:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 02:06:59,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:59,629 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] [2020-09-25 02:06:59,629 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:59,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:59,636 INFO L82 PathProgramCache]: Analyzing trace with hash 606292035, now seen corresponding path program 1 times [2020-09-25 02:06:59,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:59,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466759513] [2020-09-25 02:06:59,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:59,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:59,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 02:06:59,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:59,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 02:06:59,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:59,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:59,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 02:06:59,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:59,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 02:07:00,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:00,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:00,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:00,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:00,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:00,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:07:00,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:00,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:00,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:00,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:00,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:00,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 02:07:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:00,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:00,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:00,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:07:00,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:00,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 02:07:00,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:00,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:00,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:07:00,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:00,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:00,128 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 02:07:00,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466759513] [2020-09-25 02:07:00,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:00,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:07:00,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804990397] [2020-09-25 02:07:00,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:07:00,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:00,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:07:00,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:07:00,163 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-09-25 02:07:00,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:00,321 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-09-25 02:07:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:07:00,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-09-25 02:07:00,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:00,337 INFO L225 Difference]: With dead ends: 73 [2020-09-25 02:07:00,338 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 02:07:00,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:07:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 02:07:00,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-25 02:07:00,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 02:07:00,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-25 02:07:00,392 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2020-09-25 02:07:00,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:00,393 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-25 02:07:00,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:07:00,393 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-25 02:07:00,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 02:07:00,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:00,395 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] [2020-09-25 02:07:00,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:07:00,396 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:00,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:00,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1986388344, now seen corresponding path program 1 times [2020-09-25 02:07:00,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:00,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364002792] [2020-09-25 02:07:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:00,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:00,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:00,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:07:00,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:00,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-09-25 02:07:00,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:07:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:07:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:07:00,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:07:01,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:01,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:01,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:01,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:01,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:01,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:07:01,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:01,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:01,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:01,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:01,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:01,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 02:07:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:01,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:01,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:01,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:07:01,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:01,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:07:01,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:07:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:01,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:01,112 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 02:07:01,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364002792] [2020-09-25 02:07:01,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:01,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:07:01,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707203890] [2020-09-25 02:07:01,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:07:01,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:01,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:07:01,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:07:01,120 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 8 states. [2020-09-25 02:07:01,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:01,412 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2020-09-25 02:07:01,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:07:01,413 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 02:07:01,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:01,414 INFO L225 Difference]: With dead ends: 60 [2020-09-25 02:07:01,415 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:07:01,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:07:01,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:07:01,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-09-25 02:07:01,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 02:07:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-09-25 02:07:01,426 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 36 [2020-09-25 02:07:01,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:01,426 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-09-25 02:07:01,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:07:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-09-25 02:07:01,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 02:07:01,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:01,428 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:01,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:07:01,429 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:01,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:01,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1471095088, now seen corresponding path program 1 times [2020-09-25 02:07:01,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:01,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849361527] [2020-09-25 02:07:01,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:01,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:01,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:02,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:02,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 02:07:02,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1367 [2020-09-25 02:07:02,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:07:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:07:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:07:02,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:02,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:02,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:02,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:02,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:02,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:02,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:07:02,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:02,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:02,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 02:07:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:02,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:02,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:02,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:07:02,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:02,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:07:02,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:07:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:02,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:07:02,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849361527] [2020-09-25 02:07:02,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:07:02,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:07:02,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206435133] [2020-09-25 02:07:02,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:07:02,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:02,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:07:02,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:07:02,993 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 9 states. [2020-09-25 02:07:03,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:03,295 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-09-25 02:07:03,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:07:03,295 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-25 02:07:03,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:03,297 INFO L225 Difference]: With dead ends: 66 [2020-09-25 02:07:03,297 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 02:07:03,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:07:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 02:07:03,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-09-25 02:07:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 02:07:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-09-25 02:07:03,313 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2020-09-25 02:07:03,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:03,314 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-09-25 02:07:03,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:07:03,315 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-09-25 02:07:03,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 02:07:03,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:03,323 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:03,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:07:03,323 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:03,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:03,324 INFO L82 PathProgramCache]: Analyzing trace with hash -93423064, now seen corresponding path program 2 times [2020-09-25 02:07:03,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:03,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033086056] [2020-09-25 02:07:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:03,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:05,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:05,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 02:07:05,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:05,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1838 [2020-09-25 02:07:05,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:07:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:07:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:07:05,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:05,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:05,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:05,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:05,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:05,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:05,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:07:05,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:05,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:05,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:07:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:05,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:05,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:05,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:07:05,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:05,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:07:05,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:07:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:05,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:07:05,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033086056] [2020-09-25 02:07:05,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:07:05,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:07:05,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702854692] [2020-09-25 02:07:05,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:07:05,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:05,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:07:05,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:07:05,410 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 10 states. [2020-09-25 02:07:05,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:05,730 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-09-25 02:07:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:07:05,731 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-09-25 02:07:05,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:05,732 INFO L225 Difference]: With dead ends: 72 [2020-09-25 02:07:05,732 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 02:07:05,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 02:07:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 02:07:05,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-09-25 02:07:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 02:07:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-09-25 02:07:05,741 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2020-09-25 02:07:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:05,742 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-09-25 02:07:05,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:07:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-09-25 02:07:05,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 02:07:05,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:05,744 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:05,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:07:05,744 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:05,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:05,745 INFO L82 PathProgramCache]: Analyzing trace with hash 399520640, now seen corresponding path program 3 times [2020-09-25 02:07:05,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:05,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909731833] [2020-09-25 02:07:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:05,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:08,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:08,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 02:07:08,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:08,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2581 [2020-09-25 02:07:08,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:07:08,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:07:08,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:07:08,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:08,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:08,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:08,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:08,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:08,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:08,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:07:08,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:08,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:08,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:08,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:08,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:08,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 02:07:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:08,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:08,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:08,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:07:08,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:08,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:07:08,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:08,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:08,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:07:08,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:08,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:07:08,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909731833] [2020-09-25 02:07:08,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:07:08,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:07:08,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915290208] [2020-09-25 02:07:08,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:07:08,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:08,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:07:08,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:07:08,574 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 11 states. [2020-09-25 02:07:09,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:09,106 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-09-25 02:07:09,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 02:07:09,107 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-09-25 02:07:09,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:09,109 INFO L225 Difference]: With dead ends: 78 [2020-09-25 02:07:09,109 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 02:07:09,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-09-25 02:07:09,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 02:07:09,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-09-25 02:07:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 02:07:09,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2020-09-25 02:07:09,118 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 54 [2020-09-25 02:07:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:09,119 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2020-09-25 02:07:09,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:07:09,119 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2020-09-25 02:07:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 02:07:09,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:09,120 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:09,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:07:09,121 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:09,121 INFO L82 PathProgramCache]: Analyzing trace with hash 2020051672, now seen corresponding path program 4 times [2020-09-25 02:07:09,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:09,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255610982] [2020-09-25 02:07:09,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:09,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:09,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:12,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:12,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:07:12,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:12,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3679 [2020-09-25 02:07:12,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:12,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:07:12,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:07:12,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 02:07:12,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:13,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:13,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:13,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:13,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:13,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:13,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:07:13,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:13,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:13,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 02:07:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:13,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:13,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:13,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:07:13,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:13,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:07:13,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:07:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:13,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:13,057 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:07:13,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255610982] [2020-09-25 02:07:13,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:07:13,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 02:07:13,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884520572] [2020-09-25 02:07:13,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:07:13,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:13,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:07:13,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:07:13,063 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 12 states. [2020-09-25 02:07:13,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:13,474 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2020-09-25 02:07:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 02:07:13,474 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-09-25 02:07:13,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:13,478 INFO L225 Difference]: With dead ends: 84 [2020-09-25 02:07:13,478 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 02:07:13,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-09-25 02:07:13,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 02:07:13,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2020-09-25 02:07:13,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 02:07:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-09-25 02:07:13,491 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2020-09-25 02:07:13,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:13,491 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-09-25 02:07:13,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:07:13,492 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-09-25 02:07:13,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 02:07:13,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:13,494 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:13,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:07:13,495 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:13,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:13,495 INFO L82 PathProgramCache]: Analyzing trace with hash 956694576, now seen corresponding path program 5 times [2020-09-25 02:07:13,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:13,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471311874] [2020-09-25 02:07:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:13,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:13,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:17,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:17,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 02:07:17,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:17,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3499 [2020-09-25 02:07:17,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:07:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:07:17,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:07:17,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:17,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:17,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:17,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:17,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:17,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:17,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:07:17,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:17,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:17,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:17,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 02:07:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:17,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:17,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:17,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:07:17,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:17,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:07:17,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:17,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:07:17,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:17,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:07:17,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471311874] [2020-09-25 02:07:17,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:07:17,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 02:07:17,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190400724] [2020-09-25 02:07:17,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:07:17,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:17,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:07:17,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:07:17,308 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 13 states. [2020-09-25 02:07:17,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:17,983 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2020-09-25 02:07:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 02:07:17,984 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-09-25 02:07:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:17,985 INFO L225 Difference]: With dead ends: 90 [2020-09-25 02:07:17,989 INFO L226 Difference]: Without dead ends: 76 [2020-09-25 02:07:17,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2020-09-25 02:07:17,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-25 02:07:18,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2020-09-25 02:07:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 02:07:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2020-09-25 02:07:18,010 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 66 [2020-09-25 02:07:18,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:18,010 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2020-09-25 02:07:18,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:07:18,011 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2020-09-25 02:07:18,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 02:07:18,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:18,012 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:18,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:07:18,015 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:18,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:18,015 INFO L82 PathProgramCache]: Analyzing trace with hash -212003960, now seen corresponding path program 6 times [2020-09-25 02:07:18,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:18,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076881872] [2020-09-25 02:07:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:18,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:18,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:20,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:20,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 02:07:20,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:20,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2531 [2020-09-25 02:07:20,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:20,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:07:20,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:07:20,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 02:07:20,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:20,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:20,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:20,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:20,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:20,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:20,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:07:20,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:20,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:20,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:20,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 02:07:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:20,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:20,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:20,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:07:20,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:20,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:07:20,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:20,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:20,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:07:20,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:20,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:07:20,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076881872] [2020-09-25 02:07:20,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:07:20,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 02:07:20,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743690541] [2020-09-25 02:07:20,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 02:07:20,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:20,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 02:07:20,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:07:20,841 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 14 states. [2020-09-25 02:07:21,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:21,459 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2020-09-25 02:07:21,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 02:07:21,460 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-09-25 02:07:21,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:21,461 INFO L225 Difference]: With dead ends: 96 [2020-09-25 02:07:21,461 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 02:07:21,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=249, Invalid=681, Unknown=0, NotChecked=0, Total=930 [2020-09-25 02:07:21,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 02:07:21,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-09-25 02:07:21,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 02:07:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2020-09-25 02:07:21,477 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 72 [2020-09-25 02:07:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:21,478 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2020-09-25 02:07:21,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 02:07:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2020-09-25 02:07:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 02:07:21,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:21,480 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:21,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:07:21,481 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:21,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:21,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1778498336, now seen corresponding path program 7 times [2020-09-25 02:07:21,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:21,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596550858] [2020-09-25 02:07:21,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:21,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:21,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:24,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:24,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 02:07:24,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:24,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3250 [2020-09-25 02:07:24,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:24,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:07:24,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:07:24,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 02:07:24,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:24,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:24,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:24,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:24,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:24,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:24,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:07:24,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:24,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:24,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:24,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 02:07:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:24,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:25,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:25,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:07:25,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:25,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:07:25,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:25,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:25,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:07:25,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:25,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:07:25,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596550858] [2020-09-25 02:07:25,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:07:25,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 02:07:25,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116353943] [2020-09-25 02:07:25,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 02:07:25,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:25,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 02:07:25,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:07:25,029 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 15 states. [2020-09-25 02:07:25,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:25,683 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2020-09-25 02:07:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 02:07:25,683 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 78 [2020-09-25 02:07:25,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:25,684 INFO L225 Difference]: With dead ends: 102 [2020-09-25 02:07:25,685 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 02:07:25,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 02:07:25,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 02:07:25,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2020-09-25 02:07:25,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 02:07:25,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2020-09-25 02:07:25,704 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2020-09-25 02:07:25,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:25,705 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2020-09-25 02:07:25,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 02:07:25,705 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2020-09-25 02:07:25,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 02:07:25,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:25,706 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:25,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:07:25,707 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:25,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:25,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1012601912, now seen corresponding path program 8 times [2020-09-25 02:07:25,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:25,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730397752] [2020-09-25 02:07:25,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:25,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:25,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:30,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:30,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 02:07:30,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:30,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 02:07:30,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:30,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:07:30,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:07:30,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 02:07:30,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:30,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:30,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:30,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:30,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:30,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:30,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:07:30,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:30,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:30,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:30,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:30,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:30,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 02:07:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:31,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:31,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:31,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:07:31,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:31,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:07:31,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:07:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:31,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:31,022 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:07:31,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730397752] [2020-09-25 02:07:31,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:07:31,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:07:31,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150500550] [2020-09-25 02:07:31,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:07:31,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:31,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:07:31,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:07:31,025 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 16 states. [2020-09-25 02:07:31,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:31,616 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2020-09-25 02:07:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 02:07:31,616 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2020-09-25 02:07:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:31,618 INFO L225 Difference]: With dead ends: 108 [2020-09-25 02:07:31,618 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 02:07:31,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=367, Invalid=965, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 02:07:31,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 02:07:31,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2020-09-25 02:07:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 02:07:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2020-09-25 02:07:31,637 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 84 [2020-09-25 02:07:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:31,638 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2020-09-25 02:07:31,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:07:31,638 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2020-09-25 02:07:31,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 02:07:31,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:31,639 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:31,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 02:07:31,641 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:31,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:31,641 INFO L82 PathProgramCache]: Analyzing trace with hash 113574288, now seen corresponding path program 9 times [2020-09-25 02:07:31,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:31,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410228664] [2020-09-25 02:07:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:31,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:32,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:35,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:35,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-25 02:07:35,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:35,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4308 [2020-09-25 02:07:35,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:35,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:07:35,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 02:07:35,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 02:07:35,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:36,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:36,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:36,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:36,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:36,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:36,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:07:36,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:36,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:36,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:36,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 02:07:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:36,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:36,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:36,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:07:36,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:36,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:07:36,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:36,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:36,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:07:36,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:07:36,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410228664] [2020-09-25 02:07:36,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:07:36,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 02:07:36,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178242316] [2020-09-25 02:07:36,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 02:07:36,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:36,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 02:07:36,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:07:36,258 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 17 states. [2020-09-25 02:07:37,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:37,071 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2020-09-25 02:07:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 02:07:37,076 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 90 [2020-09-25 02:07:37,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:37,077 INFO L225 Difference]: With dead ends: 114 [2020-09-25 02:07:37,077 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 02:07:37,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1191, Unknown=0, NotChecked=0, Total=1640 [2020-09-25 02:07:37,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 02:07:37,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2020-09-25 02:07:37,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-25 02:07:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2020-09-25 02:07:37,085 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2020-09-25 02:07:37,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:37,085 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2020-09-25 02:07:37,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 02:07:37,086 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2020-09-25 02:07:37,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 02:07:37,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:37,087 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:37,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 02:07:37,087 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:37,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:37,088 INFO L82 PathProgramCache]: Analyzing trace with hash -227701528, now seen corresponding path program 10 times [2020-09-25 02:07:37,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:37,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952755223] [2020-09-25 02:07:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:37,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:37,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:41,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:41,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 02:07:41,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4781 [2020-09-25 02:07:41,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:07:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 02:07:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 02:07:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:42,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:42,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:42,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:42,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:42,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:42,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:07:42,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:42,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:42,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 02:07:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:42,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:42,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:42,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:07:42,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:42,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 02:07:42,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:07:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:07:42,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 9 proven. 56 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-09-25 02:07:42,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952755223] [2020-09-25 02:07:42,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:07:42,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 02:07:42,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446714052] [2020-09-25 02:07:42,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 02:07:42,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:42,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 02:07:42,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:07:42,393 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 14 states. [2020-09-25 02:07:43,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:43,028 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2020-09-25 02:07:43,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 02:07:43,028 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 96 [2020-09-25 02:07:43,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:43,029 INFO L225 Difference]: With dead ends: 97 [2020-09-25 02:07:43,029 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 02:07:43,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-09-25 02:07:43,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 02:07:43,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 02:07:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 02:07:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 02:07:43,033 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 96 [2020-09-25 02:07:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:43,033 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 02:07:43,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 02:07:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 02:07:43,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 02:07:43,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 02:07:43,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 02:07:43,191 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 02:07:43,191 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 02:07:43,191 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:07:43,191 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 02:07:43,192 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:07:43,192 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:07:43,192 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 02:07:43,192 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 02:07:43,192 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:07:43,192 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 02:07:43,193 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 02:07:43,193 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-25 02:07:43,193 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2020-09-25 02:07:43,193 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 02:07:43,193 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 02:07:43,193 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 02:07:43,193 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 02:07:43,194 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-25 02:07:43,194 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 02:07:43,194 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 02:07:43,194 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 02:07:43,194 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-09-25 02:07:43,194 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-25 02:07:43,195 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-25 02:07:43,195 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 02:07:43,195 INFO L268 CegarLoopResult]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2020-09-25 02:07:43,195 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-09-25 02:07:43,195 INFO L268 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-09-25 02:07:43,196 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 02:07:43,196 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-25 02:07:43,196 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-25 02:07:43,196 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-09-25 02:07:43,196 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2020-09-25 02:07:43,196 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 02:07:43,196 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 02:07:43,196 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2020-09-25 02:07:43,197 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-09-25 02:07:43,197 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-09-25 02:07:43,197 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 02:07:43,197 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2020-09-25 02:07:43,197 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-25 02:07:43,197 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 02:07:43,197 INFO L268 CegarLoopResult]: For program point L26-4(line 26) no Hoare annotation was computed. [2020-09-25 02:07:43,198 INFO L264 CegarLoopResult]: At program point L26-5(lines 26 28) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (<= main_~ad2~0.offset |main_~#ad1~0.offset|) (<= main_~i~0 .cse0) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2020-09-25 02:07:43,199 INFO L264 CegarLoopResult]: At program point L26-6(lines 26 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#ad1~0.base|)) (.cse1 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= main_~i~0 (select .cse0 (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (<= main_~ad2~0.offset |main_~#ad1~0.offset|) (<= main_~i~0 .cse1) (= (select .cse0 (+ (* .cse1 8) |main_~#ad1~0.offset|)) .cse1))) [2020-09-25 02:07:43,200 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-09-25 02:07:43,201 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 02:07:43,201 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-25 02:07:43,201 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-09-25 02:07:43,201 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-09-25 02:07:43,201 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2020-09-25 02:07:43,202 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2020-09-25 02:07:43,225 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:07:43,226 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:07:43,227 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:07:43,227 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:07:43,234 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:07:43,234 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:07:43,234 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:07:43,234 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:07:43,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:07:43 BoogieIcfgContainer [2020-09-25 02:07:43,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:07:43,263 INFO L168 Benchmark]: Toolchain (without parser) took 44657.30 ms. Allocated memory was 138.4 MB in the beginning and 438.8 MB in the end (delta: 300.4 MB). Free memory was 101.6 MB in the beginning and 179.1 MB in the end (delta: -77.4 MB). Peak memory consumption was 223.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:07:43,264 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-25 02:07:43,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.94 ms. Allocated memory is still 138.4 MB. Free memory was 101.2 MB in the beginning and 91.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:07:43,265 INFO L168 Benchmark]: Boogie Preprocessor took 138.45 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 91.2 MB in the beginning and 177.6 MB in the end (delta: -86.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:07:43,269 INFO L168 Benchmark]: RCFGBuilder took 420.75 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 160.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:07:43,270 INFO L168 Benchmark]: TraceAbstraction took 43745.00 ms. Allocated memory was 200.3 MB in the beginning and 438.8 MB in the end (delta: 238.6 MB). Free memory was 159.8 MB in the beginning and 179.1 MB in the end (delta: -19.3 MB). Peak memory consumption was 219.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:07:43,273 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 341.94 ms. Allocated memory is still 138.4 MB. Free memory was 101.2 MB in the beginning and 91.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.45 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 91.2 MB in the beginning and 177.6 MB in the end (delta: -86.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 420.75 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 160.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 43745.00 ms. Allocated memory was 200.3 MB in the beginning and 438.8 MB in the end (delta: 238.6 MB). Free memory was 159.8 MB in the beginning and 179.1 MB in the end (delta: -19.3 MB). Peak memory consumption was 219.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant [2020-09-25 02:07:43,289 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:07:43,290 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:07:43,290 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:07:43,290 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:07:43,291 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:07:43,291 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:07:43,291 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 02:07:43,292 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((ad1 <= ad2 && ad1 == ad2) && ad2 <= ad1) && i <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[ad1][unknown-#memory_int-unknown[pa][pa] * 8 + ad1] == unknown-#memory_int-unknown[pa][pa] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 43.4s, OverallIterations: 12, TraceHistogramMax: 11, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 395 SDtfs, 810 SDslu, 1742 SDs, 0 SdLazy, 2063 SolverSat, 118 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 331 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 30 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 19 PreInvPairs, 30 NumberOfFragments, 100 HoareAnnotationTreeSize, 19 FomulaSimplifications, 465 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 67 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 36.3s InterpolantComputationTime, 760 NumberOfCodeBlocks, 760 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 748 ConstructedInterpolants, 0 QuantifiedInterpolants, 380496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 234/1100 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...