/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:32:39,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:32:39,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:32:39,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:32:39,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:32:39,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:32:39,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:32:39,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:32:39,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:32:39,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:32:39,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:32:39,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:32:39,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:32:39,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:32:39,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:32:39,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:32:39,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:32:39,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:32:39,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:32:39,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:32:39,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:32:39,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:32:39,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:32:39,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:32:39,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:32:39,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:32:39,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:32:39,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:32:39,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:32:39,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:32:39,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:32:39,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:32:39,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:32:39,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:32:39,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:32:39,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:32:39,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:32:39,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:32:39,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:32:39,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:32:39,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:32:39,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:32:39,929 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:32:39,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:32:39,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:32:39,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:32:39,932 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:32:39,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:32:39,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:32:39,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:32:39,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:32:39,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:32:39,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:32:39,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:32:39,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:32:39,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:32:39,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:32:39,936 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:32:39,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:32:39,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:32:39,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:32:39,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:32:39,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:32:39,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:32:39,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:32:39,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:32:39,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:32:39,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:32:39,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:32:39,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:32:39,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:32:39,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:32:40,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:32:40,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:32:40,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:32:40,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:32:40,428 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:32:40,430 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-25 12:32:40,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6305e59eb/0fb96f72d7714d2992d86dcebdb1a711/FLAG8461ab65b [2020-09-25 12:32:41,056 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:32:41,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested6.i [2020-09-25 12:32:41,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6305e59eb/0fb96f72d7714d2992d86dcebdb1a711/FLAG8461ab65b [2020-09-25 12:32:41,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6305e59eb/0fb96f72d7714d2992d86dcebdb1a711 [2020-09-25 12:32:41,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:32:41,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:32:41,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:32:41,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:32:41,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:32:41,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:32:41" (1/1) ... [2020-09-25 12:32:41,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b50993e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:41, skipping insertion in model container [2020-09-25 12:32:41,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:32:41" (1/1) ... [2020-09-25 12:32:41,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:32:41,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:32:41,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:32:41,789 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:32:41,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:32:41,826 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:32:41,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:41 WrapperNode [2020-09-25 12:32:41,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:32:41,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:32:41,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:32:41,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:32:41,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:41" (1/1) ... [2020-09-25 12:32:41,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:41" (1/1) ... [2020-09-25 12:32:41,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:41" (1/1) ... [2020-09-25 12:32:41,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:41" (1/1) ... [2020-09-25 12:32:41,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:41" (1/1) ... [2020-09-25 12:32:41,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:41" (1/1) ... [2020-09-25 12:32:41,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:41" (1/1) ... [2020-09-25 12:32:41,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:32:41,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:32:41,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:32:41,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:32:41,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:32:42,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:32:42,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:32:42,039 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 12:32:42,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 12:32:42,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:32:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:32:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:32:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 12:32:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 12:32:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:32:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:32:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:32:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:32:42,378 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:32:42,378 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 12:32:42,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:32:42 BoogieIcfgContainer [2020-09-25 12:32:42,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:32:42,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:32:42,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:32:42,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:32:42,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:32:41" (1/3) ... [2020-09-25 12:32:42,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1faea25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:32:42, skipping insertion in model container [2020-09-25 12:32:42,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:32:41" (2/3) ... [2020-09-25 12:32:42,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1faea25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:32:42, skipping insertion in model container [2020-09-25 12:32:42,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:32:42" (3/3) ... [2020-09-25 12:32:42,400 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-09-25 12:32:42,412 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:32:42,429 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:32:42,452 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:32:42,483 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:32:42,484 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:32:42,484 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:32:42,484 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:32:42,484 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:32:42,484 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:32:42,484 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:32:42,485 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:32:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-09-25 12:32:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 12:32:42,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:42,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:42,519 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:42,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:42,526 INFO L82 PathProgramCache]: Analyzing trace with hash 2127483765, now seen corresponding path program 1 times [2020-09-25 12:32:42,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:42,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100974640] [2020-09-25 12:32:42,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:42,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:42,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:42,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 12:32:42,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:42,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 12:32:42,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:42,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:42,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:32:42,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:32:42,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:32:42,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:32:43,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:43,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:43,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:43,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:43,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:43,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:32:43,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:43,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:43,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:43,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:43,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:32:43,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100974640] [2020-09-25 12:32:43,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:43,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:32:43,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244016035] [2020-09-25 12:32:43,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:32:43,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:43,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:32:43,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:32:43,106 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 5 states. [2020-09-25 12:32:43,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:43,259 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2020-09-25 12:32:43,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:32:43,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-25 12:32:43,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:43,275 INFO L225 Difference]: With dead ends: 89 [2020-09-25 12:32:43,275 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 12:32:43,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:32:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 12:32:43,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 12:32:43,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 12:32:43,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-25 12:32:43,336 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2020-09-25 12:32:43,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:43,337 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-25 12:32:43,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:32:43,337 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-25 12:32:43,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 12:32:43,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:43,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:43,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:32:43,339 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:43,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:43,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1763359327, now seen corresponding path program 1 times [2020-09-25 12:32:43,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:43,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859638588] [2020-09-25 12:32:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:43,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:43,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:43,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:32:43,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:43,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 12:32:43,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:43,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:43,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:32:43,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 12:32:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:32:43,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:32:43,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:43,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:43,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:43,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:43,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:43,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:32:43,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:43,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:43,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:43,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:43,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:43,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:43,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:32:43,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859638588] [2020-09-25 12:32:43,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:43,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:32:43,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548063653] [2020-09-25 12:32:43,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:32:43,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:43,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:32:43,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:32:43,618 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-09-25 12:32:43,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:43,856 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2020-09-25 12:32:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:32:43,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 12:32:43,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:43,859 INFO L225 Difference]: With dead ends: 90 [2020-09-25 12:32:43,859 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 12:32:43,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:32:43,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 12:32:43,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2020-09-25 12:32:43,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 12:32:43,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-09-25 12:32:43,877 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2020-09-25 12:32:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:43,877 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-09-25 12:32:43,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:32:43,878 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-09-25 12:32:43,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 12:32:43,879 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:43,879 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:43,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:32:43,880 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:43,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:43,880 INFO L82 PathProgramCache]: Analyzing trace with hash 2139784298, now seen corresponding path program 1 times [2020-09-25 12:32:43,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:43,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958239825] [2020-09-25 12:32:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:43,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:43,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:43,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 12:32:43,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:43,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 12:32:43,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:43,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:43,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:32:43,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:32:43,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:32:43,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:44,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:44,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:44,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:44,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:44,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:44,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:32:44,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:44,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:44,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:44,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:44,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:44,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:44,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:32:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:44,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:44,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:44,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:44,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:44,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:32:44,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:44,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:44,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:44,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:32:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:32:44,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958239825] [2020-09-25 12:32:44,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:44,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:32:44,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316395535] [2020-09-25 12:32:44,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:32:44,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:44,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:32:44,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:32:44,079 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2020-09-25 12:32:44,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:44,175 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-09-25 12:32:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:32:44,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-09-25 12:32:44,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:44,180 INFO L225 Difference]: With dead ends: 90 [2020-09-25 12:32:44,181 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 12:32:44,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:32:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 12:32:44,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-25 12:32:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 12:32:44,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2020-09-25 12:32:44,196 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 32 [2020-09-25 12:32:44,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:44,197 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2020-09-25 12:32:44,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:32:44,197 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2020-09-25 12:32:44,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 12:32:44,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:44,199 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:44,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:32:44,200 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:44,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:44,200 INFO L82 PathProgramCache]: Analyzing trace with hash -268568898, now seen corresponding path program 1 times [2020-09-25 12:32:44,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:44,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47095215] [2020-09-25 12:32:44,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:44,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:44,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:44,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:44,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 12:32:44,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:32:44,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-09-25 12:32:44,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:44,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:44,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:32:44,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 12:32:44,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:32:44,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:32:44,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:44,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:44,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:44,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:44,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:44,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:32:44,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:44,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:44,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:44,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 12:32:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:44,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:44,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:44,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:44,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:32:44,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:44,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:44,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:32:44,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47095215] [2020-09-25 12:32:44,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:32:44,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:32:44,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767572053] [2020-09-25 12:32:44,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:32:44,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:44,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:32:44,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:32:44,876 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 8 states. [2020-09-25 12:32:45,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:45,218 INFO L93 Difference]: Finished difference Result 146 states and 172 transitions. [2020-09-25 12:32:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:32:45,219 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-25 12:32:45,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:45,222 INFO L225 Difference]: With dead ends: 146 [2020-09-25 12:32:45,222 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 12:32:45,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:32:45,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 12:32:45,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 93. [2020-09-25 12:32:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 12:32:45,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-09-25 12:32:45,246 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 38 [2020-09-25 12:32:45,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:45,246 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-09-25 12:32:45,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:32:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-09-25 12:32:45,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 12:32:45,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:45,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:45,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:32:45,251 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:45,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:45,252 INFO L82 PathProgramCache]: Analyzing trace with hash -360550748, now seen corresponding path program 1 times [2020-09-25 12:32:45,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:45,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368185192] [2020-09-25 12:32:45,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:45,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:45,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:45,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:45,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:46,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:32:46,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:32:46,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-09-25 12:32:46,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:46,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:46,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:32:46,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 12:32:46,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:32:46,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:46,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:46,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:46,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:46,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:46,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:32:46,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:46,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:32:46,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368185192] [2020-09-25 12:32:46,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:32:46,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:32:46,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308609231] [2020-09-25 12:32:46,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:32:46,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:46,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:32:46,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:32:46,524 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 8 states. [2020-09-25 12:32:46,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:46,825 INFO L93 Difference]: Finished difference Result 166 states and 199 transitions. [2020-09-25 12:32:46,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:32:46,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-25 12:32:46,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:46,830 INFO L225 Difference]: With dead ends: 166 [2020-09-25 12:32:46,831 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 12:32:46,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:32:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 12:32:46,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 124. [2020-09-25 12:32:46,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-25 12:32:46,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 147 transitions. [2020-09-25 12:32:46,848 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 147 transitions. Word has length 38 [2020-09-25 12:32:46,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:46,849 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 147 transitions. [2020-09-25 12:32:46,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:32:46,849 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 147 transitions. [2020-09-25 12:32:46,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 12:32:46,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:46,851 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:46,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:32:46,852 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:46,852 INFO L82 PathProgramCache]: Analyzing trace with hash -2102022651, now seen corresponding path program 1 times [2020-09-25 12:32:46,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:46,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564300608] [2020-09-25 12:32:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:46,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:46,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:47,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:47,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:47,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:47,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:48,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:48,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 12:32:48,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:32:48,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1928 [2020-09-25 12:32:48,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:48,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:32:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 12:32:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 12:32:48,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:48,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:48,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:48,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:48,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:48,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:48,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:32:48,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:48,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:48,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:48,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-25 12:32:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:48,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:48,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:48,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:48,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:48,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:32:48,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:32:48,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:48,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:48,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:48,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:32:48,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564300608] [2020-09-25 12:32:48,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:32:48,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:32:48,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979113695] [2020-09-25 12:32:48,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:32:48,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:48,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:32:48,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:32:48,868 INFO L87 Difference]: Start difference. First operand 124 states and 147 transitions. Second operand 6 states. [2020-09-25 12:32:48,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:48,959 INFO L93 Difference]: Finished difference Result 198 states and 237 transitions. [2020-09-25 12:32:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 12:32:48,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-09-25 12:32:48,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:48,963 INFO L225 Difference]: With dead ends: 198 [2020-09-25 12:32:48,963 INFO L226 Difference]: Without dead ends: 125 [2020-09-25 12:32:48,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:32:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-25 12:32:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-25 12:32:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 12:32:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-09-25 12:32:48,991 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 41 [2020-09-25 12:32:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:48,992 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-09-25 12:32:48,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:32:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-09-25 12:32:48,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 12:32:48,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:48,997 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:48,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:32:48,997 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:48,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:48,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1446982975, now seen corresponding path program 2 times [2020-09-25 12:32:49,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:49,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042883995] [2020-09-25 12:32:49,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:49,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:49,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:49,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:51,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:51,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 12:32:51,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:32:51,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2218 [2020-09-25 12:32:51,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:51,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:51,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:32:51,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 12:32:51,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:32:51,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:51,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:51,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:51,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:51,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:51,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:32:51,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:51,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:51,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:51,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:51,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 12:32:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:51,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:51,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:51,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:51,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:51,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:32:51,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:51,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:51,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:51,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:51,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:32:51,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 12:32:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:51,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:51,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:51,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:51,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:51,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:32:51,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:51,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:51,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:51,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:51,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:51,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 12:32:51,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042883995] [2020-09-25 12:32:51,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:32:51,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:32:51,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632530945] [2020-09-25 12:32:51,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:32:51,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:51,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:32:51,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:32:51,379 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 10 states. [2020-09-25 12:32:51,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:51,785 INFO L93 Difference]: Finished difference Result 179 states and 211 transitions. [2020-09-25 12:32:51,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:32:51,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-09-25 12:32:51,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:51,788 INFO L225 Difference]: With dead ends: 179 [2020-09-25 12:32:51,789 INFO L226 Difference]: Without dead ends: 177 [2020-09-25 12:32:51,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:32:51,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-25 12:32:51,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 115. [2020-09-25 12:32:51,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 12:32:51,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 134 transitions. [2020-09-25 12:32:51,816 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 134 transitions. Word has length 47 [2020-09-25 12:32:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:51,818 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 134 transitions. [2020-09-25 12:32:51,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:32:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 134 transitions. [2020-09-25 12:32:51,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 12:32:51,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:51,824 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:51,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:32:51,826 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:51,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:51,826 INFO L82 PathProgramCache]: Analyzing trace with hash 87970788, now seen corresponding path program 1 times [2020-09-25 12:32:51,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:51,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120826631] [2020-09-25 12:32:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:51,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:51,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:52,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:52,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:54,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:54,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 12:32:54,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:32:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2750 [2020-09-25 12:32:54,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:54,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:32:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 12:32:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:32:54,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:54,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:54,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:54,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:54,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:54,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:54,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:32:54,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:54,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:54,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:54,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:54,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:54,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:54,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 12:32:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:54,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:54,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:54,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:54,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:54,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:32:54,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:54,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:54,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:32:54,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 12:32:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:54,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:54,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:54,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:54,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:54,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:32:54,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:54,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:54,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:54,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 12:32:54,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120826631] [2020-09-25 12:32:54,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:54,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:32:54,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884866445] [2020-09-25 12:32:54,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:32:54,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:54,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:32:54,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:32:54,715 INFO L87 Difference]: Start difference. First operand 115 states and 134 transitions. Second operand 7 states. [2020-09-25 12:32:54,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:54,827 INFO L93 Difference]: Finished difference Result 121 states and 139 transitions. [2020-09-25 12:32:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:32:54,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-25 12:32:54,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:54,830 INFO L225 Difference]: With dead ends: 121 [2020-09-25 12:32:54,831 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 12:32:54,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:32:54,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 12:32:54,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 85. [2020-09-25 12:32:54,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 12:32:54,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2020-09-25 12:32:54,845 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 50 [2020-09-25 12:32:54,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:54,845 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2020-09-25 12:32:54,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:32:54,846 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2020-09-25 12:32:54,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 12:32:54,849 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:54,849 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:54,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:32:54,850 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:54,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:54,851 INFO L82 PathProgramCache]: Analyzing trace with hash 2033926999, now seen corresponding path program 1 times [2020-09-25 12:32:54,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:54,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707696589] [2020-09-25 12:32:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:54,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:54,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:55,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:55,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 12:32:55,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:32:55,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-09-25 12:32:55,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:55,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:32:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 12:32:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 12:32:55,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:55,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:55,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:55,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:55,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:55,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:55,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:32:55,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:55,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:55,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:55,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:55,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:55,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:32:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:55,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:55,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:55,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:55,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:32:55,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:55,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:55,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:55,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:55,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:55,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:55,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:32:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:55,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:55,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:55,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:55,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:55,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:32:55,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:55,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:55,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:55,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 12:32:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:55,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:55,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:55,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:55,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:55,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:32:55,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:55,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:55,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:55,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:55,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:55,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 12:32:55,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707696589] [2020-09-25 12:32:55,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:55,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 12:32:55,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104461744] [2020-09-25 12:32:55,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:32:55,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:55,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:32:55,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:32:55,830 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand 10 states. [2020-09-25 12:32:56,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:56,253 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2020-09-25 12:32:56,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:32:56,254 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-09-25 12:32:56,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:56,255 INFO L225 Difference]: With dead ends: 103 [2020-09-25 12:32:56,255 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 12:32:56,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:32:56,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 12:32:56,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 12:32:56,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 12:32:56,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 12:32:56,259 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-09-25 12:32:56,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:56,259 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 12:32:56,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:32:56,259 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 12:32:56,260 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 12:32:56,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:32:56,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 12:32:56,808 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 19 [2020-09-25 12:32:56,888 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 12:32:56,889 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:32:56,889 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:32:56,889 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 12:32:56,889 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 12:32:56,889 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:32:56,889 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 12:32:56,890 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 12:32:56,890 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 12:32:56,890 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 12:32:56,890 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 12:32:56,890 INFO L268 CegarLoopResult]: For program point L31(lines 23 33) no Hoare annotation was computed. [2020-09-25 12:32:56,890 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 37) no Hoare annotation was computed. [2020-09-25 12:32:56,890 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 12:32:56,891 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 12:32:56,891 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 12:32:56,891 INFO L264 CegarLoopResult]: At program point L23-5(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1))) [2020-09-25 12:32:56,891 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 12:32:56,891 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 12:32:56,893 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 12:32:56,893 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 12:32:56,893 INFO L268 CegarLoopResult]: For program point L24-1(lines 24 32) no Hoare annotation was computed. [2020-09-25 12:32:56,893 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 12:32:56,893 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-25 12:32:56,893 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 12:32:56,893 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 12:32:56,894 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 12:32:56,894 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 12:32:56,894 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-25 12:32:56,894 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-25 12:32:56,895 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 27) the Hoare annotation is: (let ((.cse1 (<= (+ main_~j~0 1) main_~n~0))) (or (let ((.cse0 (* main_~i~0 2))) (and (= .cse0 main_~k~0) .cse1 (= .cse0 main_~j~0))) (let ((.cse2 (* 2 main_~i~0))) (and (<= .cse2 main_~j~0) .cse1 (<= (+ .cse2 1) main_~k~0) (<= main_~k~0 main_~n~0))))) [2020-09-25 12:32:56,896 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 12:32:56,896 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 12:32:56,896 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 37) no Hoare annotation was computed. [2020-09-25 12:32:56,897 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 .cse2 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2))) [2020-09-25 12:32:56,897 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 37) the Hoare annotation is: true [2020-09-25 12:32:56,897 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and .cse0 .cse1 .cse2 (= (* main_~i~0 2) main_~j~0)) (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0 .cse1 .cse2))) [2020-09-25 12:32:56,897 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse4 (* main_~i~0 2)) (.cse1 (+ (* 2 main_~i~0) 1))) (let ((.cse2 (<= (+ main_~j~0 1) main_~n~0)) (.cse0 (<= (+ main_~k~0 1) main_~n~0)) (.cse3 (<= .cse1 main_~k~0)) (.cse5 (= .cse4 main_~j~0))) (or (and .cse0 (<= .cse1 main_~j~0) .cse2 .cse3) (and (= .cse4 main_~k~0) .cse2 .cse5) (and .cse0 .cse3 .cse5)))) [2020-09-25 12:32:56,897 INFO L268 CegarLoopResult]: For program point L26-1(lines 25 27) no Hoare annotation was computed. [2020-09-25 12:32:56,898 INFO L268 CegarLoopResult]: For program point L22-2(lines 22 34) no Hoare annotation was computed. [2020-09-25 12:32:56,898 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 12:32:56,898 INFO L268 CegarLoopResult]: For program point L18(lines 18 21) no Hoare annotation was computed. [2020-09-25 12:32:56,898 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 12:32:56,898 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 21) no Hoare annotation was computed. [2020-09-25 12:32:56,898 INFO L264 CegarLoopResult]: At program point L22-5(lines 22 34) the Hoare annotation is: (and (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-09-25 12:32:56,899 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 12:32:56,899 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 12:32:56,899 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 12:32:56,899 INFO L271 CegarLoopResult]: At program point L35(lines 13 37) the Hoare annotation is: true [2020-09-25 12:32:56,900 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 12:32:56,900 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 12:32:56,900 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 12:32:56,900 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 12:32:56,900 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 12:32:56,900 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 12:32:56,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:32:56 BoogieIcfgContainer [2020-09-25 12:32:56,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:32:56,938 INFO L168 Benchmark]: Toolchain (without parser) took 15461.36 ms. Allocated memory was 147.8 MB in the beginning and 314.6 MB in the end (delta: 166.7 MB). Free memory was 104.3 MB in the beginning and 221.6 MB in the end (delta: -117.3 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2020-09-25 12:32:56,940 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 12:32:56,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.24 ms. Allocated memory is still 147.8 MB. Free memory was 103.7 MB in the beginning and 94.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-25 12:32:56,943 INFO L168 Benchmark]: Boogie Preprocessor took 120.88 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 94.0 MB in the beginning and 181.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 12:32:56,949 INFO L168 Benchmark]: RCFGBuilder took 435.55 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 166.0 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2020-09-25 12:32:56,953 INFO L168 Benchmark]: TraceAbstraction took 14549.07 ms. Allocated memory was 203.4 MB in the beginning and 314.6 MB in the end (delta: 111.1 MB). Free memory was 165.3 MB in the beginning and 221.6 MB in the end (delta: -56.3 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-09-25 12:32:56,960 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 342.24 ms. Allocated memory is still 147.8 MB. Free memory was 103.7 MB in the beginning and 94.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.88 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 94.0 MB in the beginning and 181.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.55 ms. Allocated memory is still 203.4 MB. Free memory was 181.9 MB in the beginning and 166.0 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14549.07 ms. Allocated memory was 203.4 MB in the beginning and 314.6 MB in the end (delta: 111.1 MB). Free memory was 165.3 MB in the beginning and 221.6 MB in the end (delta: -56.3 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: n <= k && k <= n - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((n <= k && k <= n) && i * 2 == j) || ((2 * i + 1 <= j && n <= k) && k <= n) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((i * 2 == k && j + 1 <= n) && i * 2 == j) || (((2 * i <= j && j + 1 <= n) && 2 * i + 1 <= k) && k <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.7s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 536 SDtfs, 296 SDslu, 2111 SDs, 0 SdLazy, 1126 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 220 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 33 PreInvPairs, 53 NumberOfFragments, 212 HoareAnnotationTreeSize, 33 FomulaSimplifications, 6202 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 12 FomulaSimplificationsInter, 259 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 348 ConstructedInterpolants, 0 QuantifiedInterpolants, 36234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 53/69 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...