/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/mono-crafted_8.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:30:01,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:30:01,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:30:01,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:30:01,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:30:01,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:30:01,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:30:01,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:30:01,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:30:01,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:30:01,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:30:01,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:30:01,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:30:01,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:30:01,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:30:01,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:30:01,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:30:01,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:30:01,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:30:01,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:30:01,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:30:01,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:30:01,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:30:01,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:30:01,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:30:01,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:30:01,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:30:01,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:30:01,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:30:01,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:30:01,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:30:01,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:30:01,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:30:01,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:30:01,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:30:01,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:30:01,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:30:01,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:30:01,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:30:01,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:30:01,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:30:01,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 05:30:01,956 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:30:01,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:30:01,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:30:01,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:30:01,958 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:30:01,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:30:01,958 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:30:01,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:30:01,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:30:01,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:30:01,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:30:01,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:30:01,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:30:01,960 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:30:01,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:30:01,960 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:30:01,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:30:01,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:30:01,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:30:01,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:30:01,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:30:01,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:30:01,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:30:01,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:30:01,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:30:01,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:30:01,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:30:01,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:30:01,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:30:01,963 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:30:02,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:30:02,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:30:02,288 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:30:02,291 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:30:02,291 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:30:02,292 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_8.c [2020-10-14 05:30:02,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edb4656c3/145534f483a04a2f98a2b0d9d4e9f35f/FLAG823d3d357 [2020-10-14 05:30:02,781 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:30:02,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/mono-crafted_8.c [2020-10-14 05:30:02,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edb4656c3/145534f483a04a2f98a2b0d9d4e9f35f/FLAG823d3d357 [2020-10-14 05:30:03,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edb4656c3/145534f483a04a2f98a2b0d9d4e9f35f [2020-10-14 05:30:03,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:30:03,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:30:03,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:30:03,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:30:03,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:30:03,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:30:03" (1/1) ... [2020-10-14 05:30:03,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231f5d3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:30:03, skipping insertion in model container [2020-10-14 05:30:03,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:30:03" (1/1) ... [2020-10-14 05:30:03,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:30:03,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:30:03,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:30:03,453 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:30:03,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:30:03,478 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:30:03,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:30:03 WrapperNode [2020-10-14 05:30:03,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:30:03,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:30:03,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:30:03,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:30:03,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:30:03" (1/1) ... [2020-10-14 05:30:03,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:30:03" (1/1) ... [2020-10-14 05:30:03,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:30:03" (1/1) ... [2020-10-14 05:30:03,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:30:03" (1/1) ... [2020-10-14 05:30:03,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:30:03" (1/1) ... [2020-10-14 05:30:03,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:30:03" (1/1) ... [2020-10-14 05:30:03,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:30:03" (1/1) ... [2020-10-14 05:30:03,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:30:03,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:30:03,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:30:03,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:30:03,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:30:03" (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 [2020-10-14 05:30:03,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:30:03,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:30:03,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:30:03,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:30:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:30:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:30:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:30:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:30:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:30:03,796 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:30:03,796 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:30:03,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:30:03 BoogieIcfgContainer [2020-10-14 05:30:03,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:30:03,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:30:03,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:30:03,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:30:03,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:30:03" (1/3) ... [2020-10-14 05:30:03,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78313d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:30:03, skipping insertion in model container [2020-10-14 05:30:03,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:30:03" (2/3) ... [2020-10-14 05:30:03,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78313d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:30:03, skipping insertion in model container [2020-10-14 05:30:03,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:30:03" (3/3) ... [2020-10-14 05:30:03,808 INFO L109 eAbstractionObserver]: Analyzing ICFG mono-crafted_8.c [2020-10-14 05:30:03,818 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:30:03,825 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:30:03,839 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:30:03,863 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:30:03,863 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:30:03,864 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:30:03,864 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:30:03,864 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:30:03,864 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:30:03,864 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:30:03,864 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:30:03,892 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-14 05:30:03,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 05:30:03,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:30:03,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:30:03,901 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:30:03,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:30:03,909 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2020-10-14 05:30:03,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:30:03,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12397552] [2020-10-14 05:30:03,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:30:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:04,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:04,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:04,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:30:04,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:30:04,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 05:30:04,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:04,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:30:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:30:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:30:04,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:30:04,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:30:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:04,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:04,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:04,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:30:04,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:30:04,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:30:04,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:04,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:30:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:30:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:30:04,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:30:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:30:04,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12397552] [2020-10-14 05:30:04,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:30:04,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-14 05:30:04,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453843323] [2020-10-14 05:30:04,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-14 05:30:04,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:30:04,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-14 05:30:04,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 05:30:04,123 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-10-14 05:30:04,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:30:04,141 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-10-14 05:30:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-14 05:30:04,142 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-14 05:30:04,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:30:04,148 INFO L225 Difference]: With dead ends: 32 [2020-10-14 05:30:04,148 INFO L226 Difference]: Without dead ends: 13 [2020-10-14 05:30:04,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 05:30:04,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-14 05:30:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-14 05:30:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-14 05:30:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-10-14 05:30:04,183 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-10-14 05:30:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:30:04,183 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-10-14 05:30:04,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-14 05:30:04,184 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-10-14 05:30:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 05:30:04,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:30:04,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:30:04,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:30:04,185 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:30:04,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:30:04,186 INFO L82 PathProgramCache]: Analyzing trace with hash -158041290, now seen corresponding path program 1 times [2020-10-14 05:30:04,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:30:04,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242238830] [2020-10-14 05:30:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:30:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:04,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:04,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:04,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:30:04,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:30:04,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 05:30:04,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:04,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:30:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:30:04,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:30:04,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:04,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:30:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:04,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:04,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:04,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:30:04,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:30:04,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:30:04,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:04,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:30:04,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:30:04,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:30:04,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:30:04,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242238830] [2020-10-14 05:30:04,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:30:04,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:30:04,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856006502] [2020-10-14 05:30:04,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:30:04,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:30:04,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:30:04,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:30:04,397 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2020-10-14 05:30:04,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:30:04,429 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-10-14 05:30:04,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:30:04,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-14 05:30:04,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:30:04,431 INFO L225 Difference]: With dead ends: 21 [2020-10-14 05:30:04,431 INFO L226 Difference]: Without dead ends: 16 [2020-10-14 05:30:04,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:30:04,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-14 05:30:04,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2020-10-14 05:30:04,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-14 05:30:04,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-10-14 05:30:04,438 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2020-10-14 05:30:04,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:30:04,439 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-10-14 05:30:04,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:30:04,439 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-10-14 05:30:04,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 05:30:04,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:30:04,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:30:04,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:30:04,440 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:30:04,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:30:04,441 INFO L82 PathProgramCache]: Analyzing trace with hash 743821333, now seen corresponding path program 1 times [2020-10-14 05:30:04,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:30:04,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848490793] [2020-10-14 05:30:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:30:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:04,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:04,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:04,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:04,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:30:04,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:30:04,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 05:30:04,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:04,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:04,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:30:04,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:30:04,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:30:04,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:30:04,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:30:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:04,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:04,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:04,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:30:04,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:30:04,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:30:04,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:04,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:30:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:30:04,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:30:04,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:30:04,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848490793] [2020-10-14 05:30:04,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:30:04,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:30:04,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853151696] [2020-10-14 05:30:04,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:30:04,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:30:04,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:30:04,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:30:04,639 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2020-10-14 05:30:04,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:30:04,664 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-10-14 05:30:04,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:30:04,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-14 05:30:04,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:30:04,665 INFO L225 Difference]: With dead ends: 24 [2020-10-14 05:30:04,665 INFO L226 Difference]: Without dead ends: 16 [2020-10-14 05:30:04,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:30:04,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-14 05:30:04,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-14 05:30:04,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-14 05:30:04,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-10-14 05:30:04,671 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2020-10-14 05:30:04,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:30:04,671 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-10-14 05:30:04,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:30:04,672 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-10-14 05:30:04,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 05:30:04,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:30:04,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:30:04,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:30:04,673 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:30:04,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:30:04,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1776138601, now seen corresponding path program 1 times [2020-10-14 05:30:04,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:30:04,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220618909] [2020-10-14 05:30:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:30:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:04,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:04,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:04,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:30:04,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:30:04,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 05:30:04,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:04,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:04,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:30:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:30:04,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:30:04,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:30:04,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:30:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:04,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:04,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:04,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:30:04,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:30:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:30:04,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:04,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:04,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:30:04,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:30:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:30:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:30:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:30:04,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220618909] [2020-10-14 05:30:04,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:30:04,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 05:30:04,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135434803] [2020-10-14 05:30:04,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:30:04,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:30:04,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:30:04,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:30:04,981 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2020-10-14 05:30:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:30:05,037 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-10-14 05:30:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:30:05,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-14 05:30:05,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:30:05,038 INFO L225 Difference]: With dead ends: 24 [2020-10-14 05:30:05,039 INFO L226 Difference]: Without dead ends: 19 [2020-10-14 05:30:05,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:30:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-14 05:30:05,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-10-14 05:30:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-14 05:30:05,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-14 05:30:05,045 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-10-14 05:30:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:30:05,045 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-14 05:30:05,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:30:05,045 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-14 05:30:05,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 05:30:05,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:30:05,046 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:30:05,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:30:05,047 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:30:05,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:30:05,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1575207660, now seen corresponding path program 1 times [2020-10-14 05:30:05,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:30:05,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359266918] [2020-10-14 05:30:05,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:30:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:05,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:05,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:05,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:05,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:30:05,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:30:05,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 05:30:05,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:05,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:05,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:30:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:30:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:30:05,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:05,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:30:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:05,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:05,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:05,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:30:05,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:30:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:30:05,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:05,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:30:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:30:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:30:05,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:30:05,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359266918] [2020-10-14 05:30:05,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:30:05,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:30:05,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304545487] [2020-10-14 05:30:05,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:30:05,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:30:05,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:30:05,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:30:05,284 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2020-10-14 05:30:05,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:30:05,331 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2020-10-14 05:30:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:30:05,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-14 05:30:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:30:05,333 INFO L225 Difference]: With dead ends: 27 [2020-10-14 05:30:05,333 INFO L226 Difference]: Without dead ends: 22 [2020-10-14 05:30:05,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:30:05,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-14 05:30:05,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-10-14 05:30:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-14 05:30:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-14 05:30:05,339 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2020-10-14 05:30:05,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:30:05,340 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-14 05:30:05,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:30:05,340 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-14 05:30:05,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 05:30:05,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:30:05,341 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:30:05,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:30:05,342 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:30:05,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:30:05,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1469012343, now seen corresponding path program 2 times [2020-10-14 05:30:05,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:30:05,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701814132] [2020-10-14 05:30:05,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:30:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:05,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:05,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:05,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:05,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:05,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:30:05,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:30:05,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-14 05:30:05,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:05,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:05,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:30:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:30:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:30:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:05,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:30:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:05,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:05,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:05,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:30:05,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:30:05,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:30:05,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:05,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:05,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:30:05,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:30:05,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:30:05,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:30:05,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701814132] [2020-10-14 05:30:05,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:30:05,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:30:05,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417838178] [2020-10-14 05:30:05,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:30:05,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:30:05,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:30:05,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:30:05,783 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2020-10-14 05:30:05,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:30:05,828 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-10-14 05:30:05,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:30:05,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-14 05:30:05,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:30:05,830 INFO L225 Difference]: With dead ends: 32 [2020-10-14 05:30:05,830 INFO L226 Difference]: Without dead ends: 22 [2020-10-14 05:30:05,831 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 [2020-10-14 05:30:05,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-14 05:30:05,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-10-14 05:30:05,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 05:30:05,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-14 05:30:05,837 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-10-14 05:30:05,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:30:05,837 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-14 05:30:05,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:30:05,837 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-14 05:30:05,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 05:30:05,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:30:05,838 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:30:05,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:30:05,839 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:30:05,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:30:05,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1443974601, now seen corresponding path program 2 times [2020-10-14 05:30:05,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:30:05,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040839687] [2020-10-14 05:30:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:30:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:05,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:05,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:05,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:05,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:30:05,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:30:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 05:30:05,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:05,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:30:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:30:05,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:30:05,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 05:30:06,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:30:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:06,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:06,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:06,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:30:06,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:30:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:30:06,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:06,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:30:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:30:06,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:30:06,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:30:06,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040839687] [2020-10-14 05:30:06,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:30:06,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:30:06,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127657389] [2020-10-14 05:30:06,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:30:06,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:30:06,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:30:06,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:30:06,172 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 6 states. [2020-10-14 05:30:06,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:30:06,242 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-10-14 05:30:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:30:06,243 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-14 05:30:06,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:30:06,244 INFO L225 Difference]: With dead ends: 30 [2020-10-14 05:30:06,244 INFO L226 Difference]: Without dead ends: 25 [2020-10-14 05:30:06,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:30:06,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-14 05:30:06,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-10-14 05:30:06,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-14 05:30:06,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-14 05:30:06,254 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 19 [2020-10-14 05:30:06,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:30:06,254 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-14 05:30:06,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:30:06,254 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-14 05:30:06,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 05:30:06,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:30:06,256 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:30:06,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:30:06,257 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:30:06,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:30:06,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1682133644, now seen corresponding path program 3 times [2020-10-14 05:30:06,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:30:06,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708826054] [2020-10-14 05:30:06,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:30:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:06,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:06,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:06,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:06,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:06,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 05:30:06,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:30:06,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-14 05:30:06,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:06,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:30:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:30:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:30:06,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:06,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:30:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:06,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:06,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:06,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:30:06,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:30:06,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:30:06,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:06,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:06,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:30:06,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:30:06,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:30:06,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:30:06,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708826054] [2020-10-14 05:30:06,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:30:06,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:30:06,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408480599] [2020-10-14 05:30:06,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:30:06,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:30:06,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:30:06,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:30:06,935 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-10-14 05:30:07,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:30:07,009 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-10-14 05:30:07,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:30:07,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-14 05:30:07,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:30:07,011 INFO L225 Difference]: With dead ends: 33 [2020-10-14 05:30:07,011 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 05:30:07,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:30:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 05:30:07,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-14 05:30:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 05:30:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-14 05:30:07,017 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2020-10-14 05:30:07,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:30:07,017 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-14 05:30:07,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:30:07,017 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-14 05:30:07,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:30:07,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:30:07,018 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:30:07,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:30:07,019 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:30:07,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:30:07,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1392210665, now seen corresponding path program 4 times [2020-10-14 05:30:07,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:30:07,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104234287] [2020-10-14 05:30:07,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:30:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:07,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:07,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:07,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:07,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:07,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:07,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:07,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:30:07,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:30:07,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-10-14 05:30:07,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:07,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:07,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:30:07,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:30:07,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:30:07,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:30:07,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:30:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:07,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:07,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:07,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:30:07,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:30:07,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:30:07,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:07,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:07,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:30:07,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:30:07,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:30:07,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:30:08,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104234287] [2020-10-14 05:30:08,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:30:08,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:30:08,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350617269] [2020-10-14 05:30:08,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:30:08,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:30:08,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:30:08,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:30:08,010 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 7 states. [2020-10-14 05:30:12,306 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-14 05:30:16,566 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2020-10-14 05:30:16,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:30:16,770 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2020-10-14 05:30:16,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:30:16,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-14 05:30:16,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:30:16,772 INFO L225 Difference]: With dead ends: 47 [2020-10-14 05:30:16,772 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 05:30:16,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:30:16,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 05:30:16,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 29. [2020-10-14 05:30:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 05:30:16,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-14 05:30:16,783 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2020-10-14 05:30:16,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:30:16,785 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-14 05:30:16,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:30:16,785 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-14 05:30:16,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 05:30:16,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:30:16,786 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:30:16,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:30:16,787 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:30:16,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:30:16,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1475975532, now seen corresponding path program 5 times [2020-10-14 05:30:16,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:30:16,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343054278] [2020-10-14 05:30:16,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:30:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:16,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:16,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:16,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:17,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:17,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:18,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:18,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:30:18,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 05:30:18,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1510 [2020-10-14 05:30:18,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:18,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:30:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:30:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:30:18,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:18,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:30:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:18,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:18,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:18,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:30:18,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:30:18,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:30:18,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:18,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:30:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:30:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:30:18,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:30:18,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343054278] [2020-10-14 05:30:18,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:30:18,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:30:18,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625189773] [2020-10-14 05:30:18,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:30:18,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:30:18,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:30:18,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:30:18,570 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 8 states. [2020-10-14 05:30:21,646 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 31 [2020-10-14 05:30:23,892 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-10-14 05:30:30,877 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2020-10-14 05:30:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:30:41,545 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2020-10-14 05:30:41,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:30:41,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-14 05:30:41,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:30:41,548 INFO L225 Difference]: With dead ends: 47 [2020-10-14 05:30:41,550 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 05:30:41,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=121, Invalid=218, Unknown=3, NotChecked=0, Total=342 [2020-10-14 05:30:41,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 05:30:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-10-14 05:30:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 05:30:41,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-14 05:30:41,562 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 28 [2020-10-14 05:30:41,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:30:41,563 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-14 05:30:41,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:30:41,563 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-14 05:30:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 05:30:41,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:30:41,565 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:30:41,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:30:41,565 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:30:41,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:30:41,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1539129353, now seen corresponding path program 6 times [2020-10-14 05:30:41,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:30:41,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214250187] [2020-10-14 05:30:41,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:30:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:41,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:41,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:41,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:41,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:41,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:41,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:41,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:43,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:43,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 05:30:43,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 05:30:43,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2245 [2020-10-14 05:30:43,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:43,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:30:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:30:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:30:43,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:43,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:30:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:43,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:43,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:43,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:30:43,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:30:43,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:30:43,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:43,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:30:43,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:30:43,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:30:43,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:43,924 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:30:43,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214250187] [2020-10-14 05:30:43,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:30:43,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:30:43,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643410177] [2020-10-14 05:30:43,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:30:43,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:30:43,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:30:43,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:30:43,927 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2020-10-14 05:30:44,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:30:44,028 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2020-10-14 05:30:44,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:30:44,028 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-14 05:30:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:30:44,031 INFO L225 Difference]: With dead ends: 61 [2020-10-14 05:30:44,031 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 05:30:44,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:30:44,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 05:30:44,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 05:30:44,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 05:30:44,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-14 05:30:44,049 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 31 [2020-10-14 05:30:44,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:30:44,049 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-14 05:30:44,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:30:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-14 05:30:44,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 05:30:44,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:30:44,051 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:30:44,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:30:44,051 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:30:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:30:44,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1362713706, now seen corresponding path program 7 times [2020-10-14 05:30:44,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:30:44,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181803533] [2020-10-14 05:30:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:30:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:44,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:44,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:44,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:44,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:44,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:44,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:45,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:45,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:45,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:49,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:49,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 05:30:49,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 05:30:49,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 05:30:49,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:49,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:30:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:30:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 05:30:49,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:49,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:30:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:30:49,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:30:49,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:30:49,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:30:49,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:30:49,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:30:49,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:30:49,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:30:49,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:30:49,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:30:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:30:49,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:30:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 05:30:49,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181803533] [2020-10-14 05:30:49,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:30:49,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:30:49,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350597043] [2020-10-14 05:30:49,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:30:49,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:30:49,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:30:49,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:30:49,418 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 9 states. [2020-10-14 05:30:53,916 WARN L193 SmtUtils]: Spent 4.15 s on a formula simplification that was a NOOP. DAG size: 31 [2020-10-14 05:30:58,389 WARN L193 SmtUtils]: Spent 4.16 s on a formula simplification that was a NOOP. DAG size: 41 [2020-10-14 05:31:02,741 WARN L193 SmtUtils]: Spent 4.26 s on a formula simplification. DAG size of input: 47 DAG size of output: 23 [2020-10-14 05:31:16,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:31:16,019 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-10-14 05:31:16,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:31:16,024 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-14 05:31:16,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:31:16,025 INFO L225 Difference]: With dead ends: 62 [2020-10-14 05:31:16,025 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 05:31:16,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=172, Invalid=333, Unknown=1, NotChecked=0, Total=506 [2020-10-14 05:31:16,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 05:31:16,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2020-10-14 05:31:16,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 05:31:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-10-14 05:31:16,034 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 40 [2020-10-14 05:31:16,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:31:16,034 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-10-14 05:31:16,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:31:16,035 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-10-14 05:31:16,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 05:31:16,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:31:16,036 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:31:16,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:31:16,036 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:31:16,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:31:16,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1094601653, now seen corresponding path program 8 times [2020-10-14 05:31:16,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:31:16,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905106983] [2020-10-14 05:31:16,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:31:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:16,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:16,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:16,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:16,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:16,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:16,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:16,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:16,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:16,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:16,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:16,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:21,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:21,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 05:31:21,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 05:31:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 05:31:21,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:21,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:31:21,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:31:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 05:31:21,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:31:22,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:31:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:22,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:22,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:22,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:31:22,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:31:22,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:22,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:22,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:31:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-14 05:31:22,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905106983] [2020-10-14 05:31:22,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:31:22,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:31:22,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476375700] [2020-10-14 05:31:22,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:31:22,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:31:22,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:31:22,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:31:22,049 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 11 states. [2020-10-14 05:31:23,417 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 28 [2020-10-14 05:31:25,902 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 82 DAG size of output: 28 [2020-10-14 05:31:26,209 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2020-10-14 05:31:27,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:31:27,490 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2020-10-14 05:31:27,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 05:31:27,491 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-14 05:31:27,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:31:27,492 INFO L225 Difference]: With dead ends: 73 [2020-10-14 05:31:27,492 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 05:31:27,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:31:27,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 05:31:27,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50. [2020-10-14 05:31:27,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 05:31:27,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-10-14 05:31:27,503 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 43 [2020-10-14 05:31:27,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:31:27,503 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-10-14 05:31:27,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:31:27,503 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-10-14 05:31:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 05:31:27,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:31:27,505 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:31:27,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:31:27,505 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:31:27,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:31:27,506 INFO L82 PathProgramCache]: Analyzing trace with hash -271675371, now seen corresponding path program 9 times [2020-10-14 05:31:27,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:31:27,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22443347] [2020-10-14 05:31:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:31:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:27,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:27,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:27,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:27,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:27,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:27,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:27,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:27,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:28,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:29,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:29,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:29,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:29,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:32,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:32,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 05:31:32,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 05:31:32,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 05:31:32,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:32,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:32,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:31:32,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:31:32,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 05:31:32,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:31:36,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:31:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:36,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:36,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:36,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:31:36,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:36,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:31:36,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:36,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:36,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:31:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 204 refuted. 3 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 05:31:36,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22443347] [2020-10-14 05:31:36,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:31:36,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:31:36,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851459519] [2020-10-14 05:31:36,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:31:36,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:31:36,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:31:36,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=101, Unknown=2, NotChecked=0, Total=132 [2020-10-14 05:31:36,999 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 12 states. [2020-10-14 05:31:37,655 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 26 [2020-10-14 05:31:38,021 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2020-10-14 05:31:38,938 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 30 [2020-10-14 05:31:39,559 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 26 [2020-10-14 05:31:40,748 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 70 DAG size of output: 30 [2020-10-14 05:31:41,101 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 30 [2020-10-14 05:31:41,421 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 26 [2020-10-14 05:31:42,015 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 30 [2020-10-14 05:31:42,744 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 26 [2020-10-14 05:31:43,298 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 30 [2020-10-14 05:31:49,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:31:49,722 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2020-10-14 05:31:49,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:31:49,723 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-14 05:31:49,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:31:49,724 INFO L225 Difference]: With dead ends: 79 [2020-10-14 05:31:49,725 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 05:31:49,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=327, Invalid=793, Unknown=2, NotChecked=0, Total=1122 [2020-10-14 05:31:49,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 05:31:49,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 53. [2020-10-14 05:31:49,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 05:31:49,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-10-14 05:31:49,737 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 49 [2020-10-14 05:31:49,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:31:49,737 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-10-14 05:31:49,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:31:49,738 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-10-14 05:31:49,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:31:49,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:31:49,739 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:31:49,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:31:49,740 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:31:49,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:31:49,740 INFO L82 PathProgramCache]: Analyzing trace with hash -94856490, now seen corresponding path program 10 times [2020-10-14 05:31:49,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:31:49,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538135169] [2020-10-14 05:31:49,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:31:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:49,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:49,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:49,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:49,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:50,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:50,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:50,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:50,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:50,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:51,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:51,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:51,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:52,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:54,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:54,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 05:31:54,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 05:31:54,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 05:31:54,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:54,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:31:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:31:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 05:31:54,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:54,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:31:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:54,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:54,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:54,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:31:54,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:54,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:31:54,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:54,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:54,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:54,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:54,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:54,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:31:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 135 proven. 126 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-14 05:31:54,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538135169] [2020-10-14 05:31:54,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:31:54,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:31:54,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986362591] [2020-10-14 05:31:54,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:31:54,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:31:54,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:31:54,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:31:54,923 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 12 states. [2020-10-14 05:31:55,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:31:55,213 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2020-10-14 05:31:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:31:55,215 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-14 05:31:55,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:31:55,216 INFO L225 Difference]: With dead ends: 97 [2020-10-14 05:31:55,216 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 05:31:55,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:31:55,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 05:31:55,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-14 05:31:55,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 05:31:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-10-14 05:31:55,254 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 52 [2020-10-14 05:31:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:31:55,255 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-10-14 05:31:55,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:31:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-10-14 05:31:55,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 05:31:55,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:31:55,259 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 10, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:31:55,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:31:55,259 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:31:55,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:31:55,260 INFO L82 PathProgramCache]: Analyzing trace with hash -99724394, now seen corresponding path program 11 times [2020-10-14 05:31:55,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:31:55,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79853751] [2020-10-14 05:31:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:31:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:55,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:56,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:56,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:56,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:56,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:56,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:56,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:56,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:57,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:00,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:00,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 05:32:00,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 05:32:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 05:32:00,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:00,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:32:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:32:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 05:32:00,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:01,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:01,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:01,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:01,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:32:01,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:01,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:32:01,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:01,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:01,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:01,122 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 437 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 05:32:01,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79853751] [2020-10-14 05:32:01,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:01,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:32:01,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921907997] [2020-10-14 05:32:01,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:32:01,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:01,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:32:01,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:32:01,125 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 17 states. [2020-10-14 05:32:08,153 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-10-14 05:32:16,921 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 47 DAG size of output: 23 [2020-10-14 05:32:17,816 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 25 [2020-10-14 05:32:22,591 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 55 DAG size of output: 23 [2020-10-14 05:32:26,562 WARN L193 SmtUtils]: Spent 3.43 s on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-14 05:32:28,497 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 63 DAG size of output: 23 [2020-10-14 05:32:32,875 WARN L193 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 65 DAG size of output: 25 [2020-10-14 05:32:39,196 WARN L193 SmtUtils]: Spent 3.46 s on a formula simplification. DAG size of input: 71 DAG size of output: 23 [2020-10-14 05:32:46,931 WARN L193 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 73 DAG size of output: 25 [2020-10-14 05:32:53,815 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 79 DAG size of output: 23 [2020-10-14 05:33:05,435 WARN L193 SmtUtils]: Spent 6.51 s on a formula simplification. DAG size of input: 81 DAG size of output: 25 [2020-10-14 05:33:13,904 WARN L193 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 87 DAG size of output: 23 [2020-10-14 05:33:21,095 WARN L193 SmtUtils]: Spent 5.64 s on a formula simplification. DAG size of input: 89 DAG size of output: 25 [2020-10-14 05:33:25,203 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 4999998) (+ (* 4294967296 (div (+ c_main_~x~0 (- 3)) 4294967296)) c_main_~y~0)) (<= (+ c_main_~x~0 4999991) (+ (* 4294967296 (div (+ c_main_~x~0 (- 10)) 4294967296)) c_main_~y~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 4999996) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 5)) 4294967296)))) (<= (div c_main_~y~0 4294967296) 0) (<= (+ c_main_~x~0 4999990) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 11)) 4294967296)))) (<= (+ 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))))) is different from false [2020-10-14 05:33:27,234 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 4999998) (+ (* 4294967296 (div (+ c_main_~x~0 (- 3)) 4294967296)) c_main_~y~0)) (<= (+ c_main_~x~0 4999991) (+ (* 4294967296 (div (+ c_main_~x~0 (- 10)) 4294967296)) c_main_~y~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 4999996) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 5)) 4294967296)))) (<= (div c_main_~y~0 4294967296) 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 [2020-10-14 05:33:34,377 WARN L193 SmtUtils]: Spent 6.00 s on a formula simplification. DAG size of input: 97 DAG size of output: 25 [2020-10-14 05:33:37,274 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 4999998) (+ (* 4294967296 (div (+ c_main_~x~0 (- 3)) 4294967296)) c_main_~y~0)) (<= (+ c_main_~x~0 4999991) (+ (* 4294967296 (div (+ c_main_~x~0 (- 10)) 4294967296)) c_main_~y~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 4999996) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 5)) 4294967296)))) (<= (div c_main_~y~0 4294967296) 0) (<= (+ c_main_~x~0 4999990) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 11)) 4294967296)))) (<= (+ 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)))) (<= (+ c_main_~x~0 4999989) (+ (* 4294967296 (div (+ c_main_~x~0 (- 12)) 4294967296)) c_main_~y~0))) is different from false [2020-10-14 05:33:40,441 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 23 [2020-10-14 05:33:49,112 WARN L193 SmtUtils]: Spent 3.89 s on a formula simplification. DAG size of input: 89 DAG size of output: 25 [2020-10-14 05:33:57,006 WARN L193 SmtUtils]: Spent 6.36 s on a formula simplification. DAG size of input: 105 DAG size of output: 25 [2020-10-14 05:33:59,573 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 23 [2020-10-14 05:34:11,494 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)))) (<= (div c_main_~y~0 4294967296) 0) (<= (+ c_main_~x~0 4999991) (+ (* 4294967296 (div (+ c_main_~x~0 (- 10)) 4294967296)) c_main_~y~0)) (<= (+ c_main_~x~0 4999990) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 11)) 4294967296)))) (<= 10000000 c_main_~y~0) (<= (+ c_main_~x~0 4999997) (+ c_main_~y~0 (* 4294967296 (div (+ c_main_~x~0 (- 4)) 4294967296)))) (<= (+ c_main_~x~0 4999989) (+ (* 4294967296 (div (+ c_main_~x~0 (- 12)) 4294967296)) c_main_~y~0))) is different from false [2020-10-14 05:34:14,657 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 23 [2020-10-14 05:34:24,372 WARN L193 SmtUtils]: Spent 6.35 s on a formula simplification. DAG size of input: 71 DAG size of output: 31