/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/Mono5_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:01:10,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:01:10,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:01:10,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:01:10,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:01:10,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:01:10,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:01:10,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:01:10,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:01:10,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:01:10,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:01:10,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:01:10,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:01:10,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:01:11,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:01:11,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:01:11,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:01:11,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:01:11,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:01:11,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:01:11,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:01:11,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:01:11,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:01:11,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:01:11,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:01:11,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:01:11,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:01:11,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:01:11,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:01:11,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:01:11,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:01:11,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:01:11,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:01:11,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:01:11,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:01:11,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:01:11,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:01:11,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:01:11,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:01:11,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:01:11,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:01:11,040 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 00:01:11,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:01:11,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:01:11,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:01:11,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:01:11,085 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:01:11,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:01:11,086 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:01:11,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:01:11,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:01:11,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:01:11,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:01:11,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:01:11,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:01:11,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:01:11,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:01:11,089 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:01:11,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:01:11,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:01:11,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:01:11,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:01:11,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:01:11,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:01:11,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:01:11,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:01:11,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:01:11,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:01:11,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:01:11,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:01:11,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:01:11,091 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 00:01:11,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:01:11,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:01:11,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:01:11,404 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:01:11,405 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:01:11,405 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/Mono5_1.c [2020-10-15 00:01:11,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84fe04305/0874955f237d414d85ee794a1c93127a/FLAG38f14812c [2020-10-15 00:01:11,857 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:01:11,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/Mono5_1.c [2020-10-15 00:01:11,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84fe04305/0874955f237d414d85ee794a1c93127a/FLAG38f14812c [2020-10-15 00:01:12,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84fe04305/0874955f237d414d85ee794a1c93127a [2020-10-15 00:01:12,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:01:12,299 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:01:12,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:01:12,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:01:12,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:01:12,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:01:12" (1/1) ... [2020-10-15 00:01:12,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d45a1b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:12, skipping insertion in model container [2020-10-15 00:01:12,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:01:12" (1/1) ... [2020-10-15 00:01:12,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:01:12,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:01:12,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:01:12,486 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:01:12,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:01:12,509 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:01:12,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:12 WrapperNode [2020-10-15 00:01:12,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:01:12,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:01:12,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:01:12,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:01:12,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:12" (1/1) ... [2020-10-15 00:01:12,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:12" (1/1) ... [2020-10-15 00:01:12,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:12" (1/1) ... [2020-10-15 00:01:12,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:12" (1/1) ... [2020-10-15 00:01:12,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:12" (1/1) ... [2020-10-15 00:01:12,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:12" (1/1) ... [2020-10-15 00:01:12,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:12" (1/1) ... [2020-10-15 00:01:12,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:01:12,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:01:12,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:01:12,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:01:12,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:01:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:01:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:01:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-15 00:01:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:01:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:01:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-15 00:01:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:01:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:01:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:01:12,843 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:01:12,843 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 00:01:12,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:01:12 BoogieIcfgContainer [2020-10-15 00:01:12,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:01:12,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:01:12,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:01:12,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:01:12,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:01:12" (1/3) ... [2020-10-15 00:01:12,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abeb5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:01:12, skipping insertion in model container [2020-10-15 00:01:12,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:12" (2/3) ... [2020-10-15 00:01:12,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abeb5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:01:12, skipping insertion in model container [2020-10-15 00:01:12,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:01:12" (3/3) ... [2020-10-15 00:01:12,855 INFO L109 eAbstractionObserver]: Analyzing ICFG Mono5_1.c [2020-10-15 00:01:12,864 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:01:12,871 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:01:12,884 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:01:12,906 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:01:12,906 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:01:12,906 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:01:12,906 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:01:12,906 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:01:12,907 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:01:12,907 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:01:12,907 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:01:12,921 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-15 00:01:12,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 00:01:12,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:01:12,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:01:12,927 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:01:12,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:01:12,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1713253442, now seen corresponding path program 1 times [2020-10-15 00:01:12,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:01:12,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703830837] [2020-10-15 00:01:12,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:01:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:13,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:13,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:13,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:01:13,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:01:13,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-15 00:01:13,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:13,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:01:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:01:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:01:13,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 00:01:13,411 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2020-10-15 00:01:13,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:01:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:13,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:13,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:13,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:01:13,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:01:13,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:01:13,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:13,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:01:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:01:13,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:01:13,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:01:13,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703830837] [2020-10-15 00:01:13,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:01:13,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:01:13,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722652141] [2020-10-15 00:01:13,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:01:13,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:01:13,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:01:13,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:01:13,470 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2020-10-15 00:01:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:01:13,533 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-10-15 00:01:13,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:01:13,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-15 00:01:13,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:01:13,543 INFO L225 Difference]: With dead ends: 40 [2020-10-15 00:01:13,544 INFO L226 Difference]: Without dead ends: 16 [2020-10-15 00:01:13,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:01:13,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-15 00:01:13,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-15 00:01:13,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-15 00:01:13,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-10-15 00:01:13,580 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2020-10-15 00:01:13,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:01:13,580 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-10-15 00:01:13,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:01:13,581 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-10-15 00:01:13,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 00:01:13,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:01:13,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:01:13,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:01:13,583 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:01:13,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:01:13,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1264308876, now seen corresponding path program 1 times [2020-10-15 00:01:13,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:01:13,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024443454] [2020-10-15 00:01:13,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:01:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:13,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:13,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:13,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:01:13,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:01:13,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-15 00:01:13,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:13,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:13,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:01:13,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:01:13,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:01:13,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:13,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:01:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:13,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:13,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:13,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:01:13,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:01:13,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:01:13,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:13,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:13,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:01:13,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:01:13,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:01:13,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:01:13,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024443454] [2020-10-15 00:01:13,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:01:13,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 00:01:13,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2667870] [2020-10-15 00:01:13,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 00:01:13,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:01:13,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 00:01:13,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:01:13,839 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2020-10-15 00:01:13,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:01:13,874 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-10-15 00:01:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 00:01:13,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 00:01:13,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:01:13,876 INFO L225 Difference]: With dead ends: 31 [2020-10-15 00:01:13,876 INFO L226 Difference]: Without dead ends: 26 [2020-10-15 00:01:13,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:01:13,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-15 00:01:13,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2020-10-15 00:01:13,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-15 00:01:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-15 00:01:13,884 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2020-10-15 00:01:13,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:01:13,885 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-15 00:01:13,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 00:01:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-15 00:01:13,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 00:01:13,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:01:13,886 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:01:13,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:01:13,886 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:01:13,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:01:13,887 INFO L82 PathProgramCache]: Analyzing trace with hash 127284375, now seen corresponding path program 2 times [2020-10-15 00:01:13,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:01:13,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372947212] [2020-10-15 00:01:13,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:01:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:13,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:14,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:14,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:01:14,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:01:14,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-15 00:01:14,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:14,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:01:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:01:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:01:14,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:14,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:01:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:14,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:14,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:14,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:01:14,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:01:14,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:01:14,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:14,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:14,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:01:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:01:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:01:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:01:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:01:14,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372947212] [2020-10-15 00:01:14,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:01:14,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:01:14,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048725950] [2020-10-15 00:01:14,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:01:14,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:01:14,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:01:14,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:01:14,453 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-10-15 00:01:14,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:01:14,540 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2020-10-15 00:01:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:01:14,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-15 00:01:14,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:01:14,542 INFO L225 Difference]: With dead ends: 37 [2020-10-15 00:01:14,542 INFO L226 Difference]: Without dead ends: 32 [2020-10-15 00:01:14,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:01:14,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-15 00:01:14,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2020-10-15 00:01:14,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-15 00:01:14,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-10-15 00:01:14,556 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 16 [2020-10-15 00:01:14,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:01:14,557 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-10-15 00:01:14,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:01:14,557 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-10-15 00:01:14,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 00:01:14,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:01:14,559 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:01:14,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:01:14,560 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:01:14,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:01:14,560 INFO L82 PathProgramCache]: Analyzing trace with hash 2057483924, now seen corresponding path program 3 times [2020-10-15 00:01:14,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:01:14,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373024539] [2020-10-15 00:01:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:01:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:14,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:14,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:14,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:14,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:14,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:01:14,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:01:14,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-15 00:01:14,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:14,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:14,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:01:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:01:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:01:14,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:14,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:01:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:14,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:14,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:14,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:01:14,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:01:14,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:01:14,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:14,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:14,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:01:14,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:01:14,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:01:14,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:01:14,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373024539] [2020-10-15 00:01:14,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:01:14,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:01:14,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973661204] [2020-10-15 00:01:14,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:01:14,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:01:14,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:01:14,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:01:14,932 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 5 states. [2020-10-15 00:01:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:01:14,970 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2020-10-15 00:01:14,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:01:14,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-15 00:01:14,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:01:14,972 INFO L225 Difference]: With dead ends: 38 [2020-10-15 00:01:14,972 INFO L226 Difference]: Without dead ends: 25 [2020-10-15 00:01:14,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:01:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-15 00:01:14,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-15 00:01:14,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-15 00:01:14,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-15 00:01:14,979 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 19 [2020-10-15 00:01:14,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:01:14,980 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-15 00:01:14,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:01:14,980 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-15 00:01:14,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 00:01:14,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:01:14,981 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:01:14,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:01:14,982 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:01:14,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:01:14,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1609187957, now seen corresponding path program 1 times [2020-10-15 00:01:14,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:01:14,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831302001] [2020-10-15 00:01:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:01:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:14,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:15,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:15,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:15,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:15,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:15,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:15,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:01:15,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:01:15,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-15 00:01:15,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:15,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:01:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:01:15,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:01:15,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:15,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:01:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:15,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:15,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:15,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:01:15,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:01:15,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:01:15,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:15,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:15,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:01:15,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:01:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:01:15,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:15,535 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 00:01:15,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831302001] [2020-10-15 00:01:15,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:01:15,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 00:01:15,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722855147] [2020-10-15 00:01:15,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:01:15,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:01:15,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:01:15,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:01:15,537 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2020-10-15 00:01:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:01:15,565 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-10-15 00:01:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:01:15,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-15 00:01:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:01:15,567 INFO L225 Difference]: With dead ends: 32 [2020-10-15 00:01:15,567 INFO L226 Difference]: Without dead ends: 27 [2020-10-15 00:01:15,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:01:15,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-15 00:01:15,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-15 00:01:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-15 00:01:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-15 00:01:15,573 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2020-10-15 00:01:15,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:01:15,573 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-15 00:01:15,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:01:15,574 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-15 00:01:15,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 00:01:15,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:01:15,575 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:01:15,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:01:15,575 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:01:15,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:01:15,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1478259702, now seen corresponding path program 2 times [2020-10-15 00:01:15,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:01:15,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867972987] [2020-10-15 00:01:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:01:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:15,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:15,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:15,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:15,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:15,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:17,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:17,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-15 00:01:17,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 00:01:17,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1603 [2020-10-15 00:01:17,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:17,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:17,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:01:17,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:01:17,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:01:17,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:17,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:01:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:17,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:17,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:17,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:01:17,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:01:17,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:01:17,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:17,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:17,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:01:17,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:01:17,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:01:17,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 00:01:17,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867972987] [2020-10-15 00:01:17,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:01:17,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:01:17,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218842575] [2020-10-15 00:01:17,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:01:17,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:01:17,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:01:17,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:01:17,310 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 7 states. [2020-10-15 00:01:17,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:01:17,357 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-10-15 00:01:17,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:01:17,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-15 00:01:17,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:01:17,359 INFO L225 Difference]: With dead ends: 35 [2020-10-15 00:01:17,359 INFO L226 Difference]: Without dead ends: 30 [2020-10-15 00:01:17,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:01:17,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-15 00:01:17,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-15 00:01:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-15 00:01:17,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-15 00:01:17,369 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 25 [2020-10-15 00:01:17,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:01:17,370 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-15 00:01:17,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:01:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-15 00:01:17,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-15 00:01:17,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:01:17,374 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:01:17,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:01:17,374 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:01:17,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:01:17,375 INFO L82 PathProgramCache]: Analyzing trace with hash 824919765, now seen corresponding path program 3 times [2020-10-15 00:01:17,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:01:17,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580038036] [2020-10-15 00:01:17,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:01:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:17,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:17,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:17,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:17,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:17,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:18,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:19,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:19,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:01:19,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 00:01:19,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1761 [2020-10-15 00:01:19,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:19,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:01:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:01:19,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:01:19,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:19,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:01:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:19,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:19,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:19,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:01:19,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:01:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:01:19,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:19,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:19,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:01:19,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:01:19,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:01:19,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 00:01:19,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580038036] [2020-10-15 00:01:19,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:01:19,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:01:19,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785371181] [2020-10-15 00:01:19,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:01:19,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:01:19,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:01:19,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:01:19,235 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2020-10-15 00:01:19,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:01:19,279 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-10-15 00:01:19,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:01:19,280 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-15 00:01:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:01:19,281 INFO L225 Difference]: With dead ends: 38 [2020-10-15 00:01:19,281 INFO L226 Difference]: Without dead ends: 33 [2020-10-15 00:01:19,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:01:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-15 00:01:19,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-15 00:01:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-15 00:01:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-15 00:01:19,287 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 28 [2020-10-15 00:01:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:01:19,288 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-15 00:01:19,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:01:19,288 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-15 00:01:19,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-15 00:01:19,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:01:19,289 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:01:19,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:01:19,289 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:01:19,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:01:19,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1966642070, now seen corresponding path program 4 times [2020-10-15 00:01:19,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:01:19,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050544900] [2020-10-15 00:01:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:01:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:19,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:19,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:19,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:19,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:19,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:19,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:19,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:20,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:22,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:22,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-15 00:01:22,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:01:22,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2967 [2020-10-15 00:01:22,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:22,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:22,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:01:22,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:01:22,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:01:22,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:22,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:01:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:22,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:22,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:01:22,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:01:22,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:01:22,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:22,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:01:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:01:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:01:22,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:22,477 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:01:22,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050544900] [2020-10-15 00:01:22,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:01:22,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:01:22,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093981453] [2020-10-15 00:01:22,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:01:22,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:01:22,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:01:22,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:01:22,479 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 9 states. [2020-10-15 00:01:23,254 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 26 [2020-10-15 00:01:23,605 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-10-15 00:01:23,750 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 26 [2020-10-15 00:01:24,190 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2020-10-15 00:01:26,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:01:26,665 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2020-10-15 00:01:26,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:01:26,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-15 00:01:26,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:01:26,668 INFO L225 Difference]: With dead ends: 86 [2020-10-15 00:01:26,669 INFO L226 Difference]: Without dead ends: 81 [2020-10-15 00:01:26,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:01:26,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-15 00:01:26,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 35. [2020-10-15 00:01:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-15 00:01:26,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-15 00:01:26,677 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 31 [2020-10-15 00:01:26,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:01:26,678 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-15 00:01:26,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:01:26,678 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-15 00:01:26,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-15 00:01:26,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:01:26,679 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:01:26,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:01:26,680 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:01:26,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:01:26,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1125153995, now seen corresponding path program 5 times [2020-10-15 00:01:26,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:01:26,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682363875] [2020-10-15 00:01:26,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:01:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:26,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:26,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:26,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:26,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:26,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:26,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:27,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:28,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:30,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:30,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:01:30,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 00:01:30,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4145 [2020-10-15 00:01:30,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:30,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:30,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:01:30,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:01:30,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:01:30,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:30,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:01:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:30,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:30,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:30,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:01:30,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:01:30,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:01:30,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:30,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:30,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:01:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:01:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:01:30,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 00:01:30,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682363875] [2020-10-15 00:01:30,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:01:30,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 00:01:30,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203037422] [2020-10-15 00:01:30,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:01:30,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:01:30,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:01:30,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:01:30,966 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 10 states. [2020-10-15 00:01:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:01:31,049 INFO L93 Difference]: Finished difference Result 102 states and 127 transitions. [2020-10-15 00:01:31,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:01:31,050 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-15 00:01:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:01:31,051 INFO L225 Difference]: With dead ends: 102 [2020-10-15 00:01:31,051 INFO L226 Difference]: Without dead ends: 97 [2020-10-15 00:01:31,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:01:31,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-15 00:01:31,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 38. [2020-10-15 00:01:31,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-15 00:01:31,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-15 00:01:31,065 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 34 [2020-10-15 00:01:31,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:01:31,065 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-15 00:01:31,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:01:31,066 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-15 00:01:31,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-15 00:01:31,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:01:31,068 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:01:31,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:01:31,068 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:01:31,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:01:31,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1046903606, now seen corresponding path program 6 times [2020-10-15 00:01:31,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:01:31,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246071112] [2020-10-15 00:01:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:01:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:31,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:31,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:31,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:31,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:31,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:31,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:31,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:31,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:31,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:33,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:35,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:35,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-15 00:01:35,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 00:01:35,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4357 [2020-10-15 00:01:35,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:35,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:01:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:01:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:01:35,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:35,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:01:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:35,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:35,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:35,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:01:35,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:01:35,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:01:35,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:35,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:35,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:01:35,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:01:35,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:01:35,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 00:01:35,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246071112] [2020-10-15 00:01:35,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:01:35,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 00:01:35,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740371732] [2020-10-15 00:01:35,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:01:35,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:01:35,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:01:35,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:01:35,616 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 11 states. [2020-10-15 00:01:35,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:01:35,708 INFO L93 Difference]: Finished difference Result 105 states and 131 transitions. [2020-10-15 00:01:35,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:01:35,709 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-15 00:01:35,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:01:35,710 INFO L225 Difference]: With dead ends: 105 [2020-10-15 00:01:35,710 INFO L226 Difference]: Without dead ends: 100 [2020-10-15 00:01:35,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:01:35,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-15 00:01:35,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 41. [2020-10-15 00:01:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-15 00:01:35,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-15 00:01:35,719 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 37 [2020-10-15 00:01:35,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:01:35,720 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-15 00:01:35,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:01:35,720 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-15 00:01:35,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-15 00:01:35,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:01:35,721 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:01:35,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:01:35,721 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:01:35,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:01:35,722 INFO L82 PathProgramCache]: Analyzing trace with hash 837613461, now seen corresponding path program 7 times [2020-10-15 00:01:35,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:01:35,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977612398] [2020-10-15 00:01:35,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:01:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:35,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:35,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:35,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:35,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:35,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:35,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:36,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:36,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:36,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:36,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:38,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:40,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:40,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 00:01:40,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 00:01:40,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4937 [2020-10-15 00:01:40,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:40,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:40,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:01:40,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:01:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:01:40,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:43,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:01:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:01:43,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:01:43,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:01:43,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:01:43,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:01:43,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:01:43,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:01:43,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:01:43,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:01:43,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:01:43,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:01:43,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:01:43,147 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:01:43,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977612398] [2020-10-15 00:01:43,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:01:43,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 00:01:43,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218693595] [2020-10-15 00:01:43,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:01:43,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:01:43,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:01:43,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=103, Unknown=1, NotChecked=0, Total=132 [2020-10-15 00:01:43,149 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 12 states. [2020-10-15 00:01:47,255 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 87 DAG size of output: 32 [2020-10-15 00:01:47,467 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 28 [2020-10-15 00:01:48,157 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 33 [2020-10-15 00:01:49,910 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 28 [2020-10-15 00:01:52,540 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 28 [2020-10-15 00:01:55,015 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2020-10-15 00:01:55,550 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 32 [2020-10-15 00:01:59,184 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 28 [2020-10-15 00:02:01,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:02:01,822 INFO L93 Difference]: Finished difference Result 120 states and 152 transitions. [2020-10-15 00:02:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 00:02:01,829 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-15 00:02:01,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:02:01,830 INFO L225 Difference]: With dead ends: 120 [2020-10-15 00:02:01,830 INFO L226 Difference]: Without dead ends: 115 [2020-10-15 00:02:01,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=323, Invalid=795, Unknown=4, NotChecked=0, Total=1122 [2020-10-15 00:02:01,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-15 00:02:01,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 44. [2020-10-15 00:02:01,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-15 00:02:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-10-15 00:02:01,854 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 40 [2020-10-15 00:02:01,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:02:01,854 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-10-15 00:02:01,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:02:01,855 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-10-15 00:02:01,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 00:02:01,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:02:01,856 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:02:01,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 00:02:01,856 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:02:01,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:02:01,857 INFO L82 PathProgramCache]: Analyzing trace with hash -2127549738, now seen corresponding path program 8 times [2020-10-15 00:02:01,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:02:01,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988272107] [2020-10-15 00:02:01,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:02:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:02:01,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:02:01,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:02:01,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:02:01,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:02:01,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:02:02,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:02:02,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:02:02,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:02:02,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:02:02,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:02:02,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:02:04,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:02:05,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:02:05,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-15 00:02:05,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 00:02:05,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3937 [2020-10-15 00:02:05,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:02:05,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:02:05,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:02:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:02:05,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:02:05,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:02:06,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:02:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:02:06,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:02:06,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:02:06,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:02:06,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:02:06,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:02:06,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:02:06,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:02:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:02:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:02:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:02:06,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:02:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 00:02:06,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988272107] [2020-10-15 00:02:06,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:02:06,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 00:02:06,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066057246] [2020-10-15 00:02:06,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:02:06,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:02:06,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:02:06,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:02:06,427 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 13 states. [2020-10-15 00:02:10,735 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2020-10-15 00:02:14,670 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 25 [2020-10-15 00:02:17,199 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 (- 1)))) (and (<= (+ (* 4294967296 (div (+ c_main_~x~0 .cse0 4299967292) 4294967296)) 4) c_main_~x~0) (<= (div c_main_~y~0 4294967296) 0) (<= (+ (* 4294967296 (div (+ c_main_~x~0 .cse0 4299967294) 4294967296)) 2) c_main_~x~0) (<= 10000000 c_main_~y~0) (<= (+ (* 4294967296 (div (+ c_main_~x~0 .cse0 4299967290) 4294967296)) 6) c_main_~x~0) (<= (+ (* 4294967296 (div (+ c_main_~x~0 .cse0 4299967293) 4294967296)) 3) c_main_~x~0) (<= (+ (* 4294967296 (div (+ c_main_~x~0 .cse0 4299967288) 4294967296)) 8) c_main_~x~0) (<= (+ (* 4294967296 (div (+ c_main_~x~0 .cse0 4299967291) 4294967296)) 5) c_main_~x~0) (<= (+ (* 4294967296 (div (+ c_main_~x~0 .cse0 4299967289) 4294967296)) 7) c_main_~x~0))) is different from false [2020-10-15 00:02:18,982 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2020-10-15 00:02:22,943 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 58 DAG size of output: 23 [2020-10-15 00:02:24,683 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 24 [2020-10-15 00:02:28,733 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 23 [2020-10-15 00:02:39,125 WARN L193 SmtUtils]: Spent 6.27 s on a formula simplification. DAG size of input: 46 DAG size of output: 25 [2020-10-15 00:02:45,406 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 52 DAG size of output: 24 [2020-10-15 00:02:46,943 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 23 [2020-10-15 00:02:50,555 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 53 DAG size of output: 25 [2020-10-15 00:02:57,292 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 59 DAG size of output: 24 [2020-10-15 00:03:02,101 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2020-10-15 00:03:08,098 WARN L193 SmtUtils]: Spent 3.49 s on a formula simplification. DAG size of input: 60 DAG size of output: 25 [2020-10-15 00:03:12,952 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 66 DAG size of output: 24 [2020-10-15 00:03:18,069 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 73 DAG size of output: 24 [2020-10-15 00:03:18,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:18,372 INFO L93 Difference]: Finished difference Result 169 states and 214 transitions. [2020-10-15 00:03:18,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 00:03:18,373 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-10-15 00:03:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:18,375 INFO L225 Difference]: With dead ends: 169 [2020-10-15 00:03:18,375 INFO L226 Difference]: Without dead ends: 164 [2020-10-15 00:03:18,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 69.0s TimeCoverageRelationStatistics Valid=355, Invalid=900, Unknown=9, NotChecked=68, Total=1332 [2020-10-15 00:03:18,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-15 00:03:18,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 50. [2020-10-15 00:03:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-15 00:03:18,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-10-15 00:03:18,391 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 43 [2020-10-15 00:03:18,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:18,391 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-10-15 00:03:18,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:03:18,392 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-10-15 00:03:18,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 00:03:18,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:18,393 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:18,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 00:03:18,393 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:18,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:18,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1582932981, now seen corresponding path program 9 times [2020-10-15 00:03:18,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:18,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152165978] [2020-10-15 00:03:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:18,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:18,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:18,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:18,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:18,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:18,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:18,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:18,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:18,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:18,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:19,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:19,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:22,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:23,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:23,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 00:03:23,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 00:03:23,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 00:03:23,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:23,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:03:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:03:23,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:23,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:23,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:23,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:23,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:23,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:23,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:03:23,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:23,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:23,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:23,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:23,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:23,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 23 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:03:23,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152165978] [2020-10-15 00:03:23,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:23,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 00:03:23,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745071636] [2020-10-15 00:03:23,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:03:23,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:23,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:03:23,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:03:23,609 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 14 states. [2020-10-15 00:03:23,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:03:23,955 INFO L93 Difference]: Finished difference Result 115 states and 144 transitions. [2020-10-15 00:03:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:03:23,956 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2020-10-15 00:03:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:03:23,957 INFO L225 Difference]: With dead ends: 115 [2020-10-15 00:03:23,957 INFO L226 Difference]: Without dead ends: 78 [2020-10-15 00:03:23,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:03:23,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-15 00:03:23,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-15 00:03:23,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-15 00:03:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-10-15 00:03:23,981 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 46 [2020-10-15 00:03:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:03:23,982 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-10-15 00:03:23,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:03:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-10-15 00:03:23,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 00:03:23,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:03:23,983 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 12, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:03:23,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 00:03:23,983 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:03:23,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:03:23,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1599890380, now seen corresponding path program 10 times [2020-10-15 00:03:23,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:03:23,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813472595] [2020-10-15 00:03:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:03:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:24,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:24,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:24,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:24,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:24,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:24,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:24,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:24,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:25,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:25,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:25,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:25,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:25,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:25,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:26,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:26,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:26,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:26,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:26,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:28,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:28,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 00:03:28,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-15 00:03:28,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 00:03:28,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:28,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:03:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:03:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 00:03:28,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:29,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:03:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:03:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:03:29,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:03:29,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:03:29,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:03:29,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:03:29,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:03:29,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:03:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:03:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:03:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:03:29,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:03:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-15 00:03:29,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813472595] [2020-10-15 00:03:29,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:03:29,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 00:03:29,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459328564] [2020-10-15 00:03:29,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:03:29,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:03:29,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:03:29,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:03:29,614 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 14 states. [2020-10-15 00:03:47,146 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification that was a NOOP. DAG size: 33 [2020-10-15 00:03:54,431 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 41 DAG size of output: 25 [2020-10-15 00:03:58,100 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 49 DAG size of output: 25 [2020-10-15 00:04:00,168 WARN L838 $PredicateComparison]: unable to prove that (and (<= (+ c_main_~x~0 4999996) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 5)) 4294967296)))) (<= (+ c_main_~x~0 4999998) (+ (* 4294967296 (div (+ c_main_~x~0 (- 3)) 4294967296)) c_main_~y~0)) (<= (div c_main_~y~0 4294967296) 0) (<= (+ c_main_~x~0 4999999) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 2)) 4294967296)))) (<= 10000000 c_main_~y~0) (<= (+ c_main_~x~0 5000000) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 1)) 4294967296)))) (<= (+ c_main_~x~0 4999997) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 4)) 4294967296)))) (<= (+ c_main_~x~0 5000001) (+ c_main_~y~0 (* 4294967296 (div c_main_~x~0 4294967296))))) is different from false [2020-10-15 00:04:03,084 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-15 00:04:06,038 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 63 DAG size of output: 23 [2020-10-15 00:04:07,755 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 25 [2020-10-15 00:04:11,606 WARN L193 SmtUtils]: Spent 2.99 s on a formula simplification. DAG size of input: 71 DAG size of output: 23 [2020-10-15 00:04:13,222 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 73 DAG size of output: 25 [2020-10-15 00:04:16,306 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 79 DAG size of output: 23 [2020-10-15 00:04:26,256 WARN L193 SmtUtils]: Spent 9.32 s on a formula simplification. DAG size of input: 81 DAG size of output: 25 [2020-10-15 00:04:30,773 WARN L193 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 87 DAG size of output: 23 [2020-10-15 00:04:32,806 WARN L838 $PredicateComparison]: unable to prove that (and (<= (+ c_main_~x~0 4999993) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 8)) 4294967296)))) (<= (+ c_main_~x~0 4999995) (+ (* 4294967296 (div (+ c_main_~x~0 (- 6)) 4294967296)) c_main_~y~0)) (<= (+ c_main_~x~0 4999992) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 9)) 4294967296)))) (<= (+ c_main_~x~0 4999994) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 7)) 4294967296)))) (<= (+ c_main_~x~0 4999996) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 5)) 4294967296)))) (<= (+ c_main_~x~0 4999998) (+ (* 4294967296 (div (+ c_main_~x~0 (- 3)) 4294967296)) c_main_~y~0)) (<= (div c_main_~y~0 4294967296) 0) (<= (+ c_main_~x~0 4999999) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 2)) 4294967296)))) (<= 10000000 c_main_~y~0) (<= (+ c_main_~x~0 4999997) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 4)) 4294967296))))) is different from false [2020-10-15 00:04:34,530 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 23 [2020-10-15 00:04:37,180 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 63 DAG size of output: 23 [2020-10-15 00:04:51,310 WARN L193 SmtUtils]: Spent 6.10 s on a formula simplification. DAG size of input: 73 DAG size of output: 25 [2020-10-15 00:04:52,708 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 23 [2020-10-15 00:05:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:08,634 INFO L93 Difference]: Finished difference Result 225 states and 279 transitions. [2020-10-15 00:05:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 00:05:08,636 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 73 [2020-10-15 00:05:08,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:08,639 INFO L225 Difference]: With dead ends: 225 [2020-10-15 00:05:08,639 INFO L226 Difference]: Without dead ends: 220 [2020-10-15 00:05:08,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 79.4s TimeCoverageRelationStatistics Valid=437, Invalid=1124, Unknown=7, NotChecked=154, Total=1722 [2020-10-15 00:05:08,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-15 00:05:08,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 77. [2020-10-15 00:05:08,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-15 00:05:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-10-15 00:05:08,664 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 73 [2020-10-15 00:05:08,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:08,665 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-10-15 00:05:08,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:05:08,665 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-10-15 00:05:08,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 00:05:08,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:08,666 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 12, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:08,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 00:05:08,666 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:08,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:08,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1502563799, now seen corresponding path program 11 times [2020-10-15 00:05:08,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:08,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052739895] [2020-10-15 00:05:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:08,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:08,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:08,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:08,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:08,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:08,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:09,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:09,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:09,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:09,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:09,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:10,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:10,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:10,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:10,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:10,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:10,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:10,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:10,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:11,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:11,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:13,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:13,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:13,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 00:05:13,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-15 00:05:13,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 00:05:13,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:13,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:05:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:05:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 00:05:13,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:18,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:18,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:18,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:18,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:18,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:18,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:18,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:18,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:18,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:18,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 525 refuted. 3 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-15 00:05:18,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052739895] [2020-10-15 00:05:18,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:18,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 00:05:18,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428149270] [2020-10-15 00:05:18,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:05:18,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:18,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:05:18,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=170, Unknown=2, NotChecked=0, Total=210 [2020-10-15 00:05:18,354 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 15 states. [2020-10-15 00:05:19,653 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2020-10-15 00:05:19,889 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 30 [2020-10-15 00:05:20,279 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 26 [2020-10-15 00:05:20,633 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 30 [2020-10-15 00:05:21,456 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 26 [2020-10-15 00:05:21,941 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 30 [2020-10-15 00:05:23,360 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 86 DAG size of output: 26 [2020-10-15 00:05:24,593 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 30 [2020-10-15 00:05:25,129 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 26 [2020-10-15 00:05:26,183 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 30 [2020-10-15 00:05:28,552 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 106 DAG size of output: 26 [2020-10-15 00:05:32,099 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 30