/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=0.4 --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-lit/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:40:34,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:40:34,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:40:34,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:40:34,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:40:34,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:40:34,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:40:34,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:40:34,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:40:34,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:40:34,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:40:34,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:40:34,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:40:34,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:40:34,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:40:34,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:40:34,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:40:34,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:40:34,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:40:34,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:40:34,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:40:34,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:40:34,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:40:34,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:40:34,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:40:34,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:40:34,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:40:34,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:40:34,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:40:34,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:40:34,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:40:34,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:40:34,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:40:34,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:40:34,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:40:34,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:40:34,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:40:34,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:40:34,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:40:34,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:40:34,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:40:34,573 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 13:40:34,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:40:34,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:40:34,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:40:34,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:40:34,620 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:40:34,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:40:34,621 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:40:34,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:40:34,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:40:34,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:40:34,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:40:34,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:40:34,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:40:34,624 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:40:34,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:40:34,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:40:34,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:40:34,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:40:34,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:40:34,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:40:34,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:40:34,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:40:34,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:40:34,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:40:34,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:40:34,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:40:34,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:40:34,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:40:34,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:40:34,627 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:40:35,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:40:35,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:40:35,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:40:35,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:40:35,148 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:40:35,149 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2020-09-25 13:40:35,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c074cc88/8532b892e0d64304ade66c19f0088e73/FLAG607a0d57d [2020-09-25 13:40:35,758 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:40:35,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gj2007b.i [2020-09-25 13:40:35,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c074cc88/8532b892e0d64304ade66c19f0088e73/FLAG607a0d57d [2020-09-25 13:40:36,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c074cc88/8532b892e0d64304ade66c19f0088e73 [2020-09-25 13:40:36,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:40:36,128 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:40:36,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:40:36,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:40:36,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:40:36,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:40:36" (1/1) ... [2020-09-25 13:40:36,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528baabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:36, skipping insertion in model container [2020-09-25 13:40:36,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:40:36" (1/1) ... [2020-09-25 13:40:36,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:40:36,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:40:36,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:40:36,395 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:40:36,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:40:36,432 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:40:36,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:36 WrapperNode [2020-09-25 13:40:36,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:40:36,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:40:36,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:40:36,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:40:36,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:36" (1/1) ... [2020-09-25 13:40:36,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:36" (1/1) ... [2020-09-25 13:40:36,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:36" (1/1) ... [2020-09-25 13:40:36,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:36" (1/1) ... [2020-09-25 13:40:36,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:36" (1/1) ... [2020-09-25 13:40:36,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:36" (1/1) ... [2020-09-25 13:40:36,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:36" (1/1) ... [2020-09-25 13:40:36,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:40:36,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:40:36,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:40:36,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:40:36,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:36" (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 13:40:36,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:40:36,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:40:36,635 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 13:40:36,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 13:40:36,636 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:40:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:40:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:40:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 13:40:36,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 13:40:36,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:40:36,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:40:36,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:40:36,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:40:36,854 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:40:36,855 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:40:36,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:40:36 BoogieIcfgContainer [2020-09-25 13:40:36,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:40:36,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:40:36,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:40:36,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:40:36,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:40:36" (1/3) ... [2020-09-25 13:40:36,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a186817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:40:36, skipping insertion in model container [2020-09-25 13:40:36,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:36" (2/3) ... [2020-09-25 13:40:36,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a186817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:40:36, skipping insertion in model container [2020-09-25 13:40:36,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:40:36" (3/3) ... [2020-09-25 13:40:36,874 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2020-09-25 13:40:36,890 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:40:36,899 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:40:36,924 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:40:36,957 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:40:36,957 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:40:36,957 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:40:36,958 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:40:36,958 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:40:36,958 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:40:36,958 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:40:36,958 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:40:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-25 13:40:36,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-25 13:40:36,993 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:36,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:36,994 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:37,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:37,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1007675669, now seen corresponding path program 1 times [2020-09-25 13:40:37,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:37,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765243926] [2020-09-25 13:40:37,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:37,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:37,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:37,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:37,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:40:37,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:37,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 13:40:37,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:37,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:37,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:40:37,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:40:37,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:40:37,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:40:37,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:37,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:37,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:37,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:37,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:37,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:37,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:37,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:37,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:37,343 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 13:40:37,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765243926] [2020-09-25 13:40:37,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:37,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:40:37,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971305854] [2020-09-25 13:40:37,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:40:37,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:37,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:40:37,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:40:37,375 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-09-25 13:40:37,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:37,487 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2020-09-25 13:40:37,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:40:37,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-25 13:40:37,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:37,501 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:40:37,502 INFO L226 Difference]: Without dead ends: 37 [2020-09-25 13:40:37,507 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 13:40:37,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-25 13:40:37,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-09-25 13:40:37,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 13:40:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 13:40:37,555 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 14 [2020-09-25 13:40:37,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:37,556 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 13:40:37,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:40:37,556 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 13:40:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 13:40:37,557 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:37,558 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:37,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:40:37,558 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:37,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:37,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1988212296, now seen corresponding path program 1 times [2020-09-25 13:40:37,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:37,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577423728] [2020-09-25 13:40:37,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:37,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:37,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:37,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:37,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:40:37,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:37,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 13:40:37,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:37,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:37,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:40:37,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:40:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:40:37,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:37,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:37,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:37,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:37,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:37,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:37,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:40:37,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:37,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:37,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:37,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:37,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:37,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:37,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:40:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:37,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:37,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:37,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:37,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 13:40:37,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:37,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:37,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:37,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:37,935 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 13:40:37,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577423728] [2020-09-25 13:40:37,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:37,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:40:37,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951098511] [2020-09-25 13:40:37,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:40:37,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:37,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:40:37,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:40:37,945 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-09-25 13:40:37,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:37,998 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-09-25 13:40:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:40:37,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 13:40:38,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:38,001 INFO L225 Difference]: With dead ends: 43 [2020-09-25 13:40:38,001 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 13:40:38,002 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 13:40:38,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 13:40:38,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-09-25 13:40:38,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-25 13:40:38,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-09-25 13:40:38,010 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 19 [2020-09-25 13:40:38,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:38,011 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-09-25 13:40:38,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:40:38,011 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-09-25 13:40:38,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 13:40:38,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:38,012 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] [2020-09-25 13:40:38,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:40:38,014 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:38,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:38,015 INFO L82 PathProgramCache]: Analyzing trace with hash 2096508511, now seen corresponding path program 1 times [2020-09-25 13:40:38,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:38,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278962890] [2020-09-25 13:40:38,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:38,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:38,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:40:38,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:38,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 13:40:38,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:38,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:38,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:40:38,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:40:38,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:40:38,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:38,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:38,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:38,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:38,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:38,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:40:38,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:38,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:38,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:38,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:38,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:38,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:40:38,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278962890] [2020-09-25 13:40:38,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:38,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:40:38,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729450839] [2020-09-25 13:40:38,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:40:38,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:38,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:40:38,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:40:38,287 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-09-25 13:40:38,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:38,389 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-09-25 13:40:38,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:40:38,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-25 13:40:38,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:38,391 INFO L225 Difference]: With dead ends: 52 [2020-09-25 13:40:38,391 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 13:40:38,392 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 13:40:38,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 13:40:38,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2020-09-25 13:40:38,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 13:40:38,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 13:40:38,400 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20 [2020-09-25 13:40:38,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:38,400 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 13:40:38,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:40:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 13:40:38,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 13:40:38,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:38,402 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] [2020-09-25 13:40:38,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:40:38,402 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:38,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:38,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1151527866, now seen corresponding path program 1 times [2020-09-25 13:40:38,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:38,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036170918] [2020-09-25 13:40:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:38,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:38,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:40:38,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:38,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 13:40:38,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:38,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:40:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:40:38,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:40:38,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:38,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:38,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:38,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:38,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:38,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:40:38,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:38,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:38,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:38,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:38,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:38,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:40:38,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036170918] [2020-09-25 13:40:38,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:38,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:40:38,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008198507] [2020-09-25 13:40:38,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:40:38,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:38,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:40:38,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:40:38,699 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-09-25 13:40:38,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:38,817 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-09-25 13:40:38,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:40:38,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-09-25 13:40:38,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:38,819 INFO L225 Difference]: With dead ends: 44 [2020-09-25 13:40:38,819 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 13:40:38,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:40:38,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 13:40:38,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2020-09-25 13:40:38,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 13:40:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-09-25 13:40:38,834 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2020-09-25 13:40:38,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:38,835 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-09-25 13:40:38,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:40:38,835 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-09-25 13:40:38,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 13:40:38,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:38,838 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:40:38,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:40:38,839 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:38,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:38,839 INFO L82 PathProgramCache]: Analyzing trace with hash -2086501752, now seen corresponding path program 1 times [2020-09-25 13:40:38,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:38,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795650285] [2020-09-25 13:40:38,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:38,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:38,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 13:40:38,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:38,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 13:40:38,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:38,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:38,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:40:38,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:40:38,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:40:38,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:39,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:39,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:39,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:39,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:39,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:39,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:39,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:39,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:39,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:39,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:39,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:39,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:40:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:39,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:39,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:39,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:39,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:40:39,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:39,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:39,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:40:39,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795650285] [2020-09-25 13:40:39,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:39,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:40:39,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821018093] [2020-09-25 13:40:39,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:40:39,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:39,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:40:39,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:40:39,091 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 6 states. [2020-09-25 13:40:39,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:39,157 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-09-25 13:40:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:40:39,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-09-25 13:40:39,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:39,158 INFO L225 Difference]: With dead ends: 43 [2020-09-25 13:40:39,158 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 13:40:39,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 13:40:39,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 13:40:39,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 13:40:39,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 13:40:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 13:40:39,160 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-09-25 13:40:39,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:39,160 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 13:40:39,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:40:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 13:40:39,161 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 13:40:39,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:40:39,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 13:40:39,326 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 13:40:39,327 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:40:39,327 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:40:39,327 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 13:40:39,327 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 13:40:39,327 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 13:40:39,327 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 13:40:39,328 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 13:40:39,328 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 13:40:39,328 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 13:40:39,328 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 13:40:39,328 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-09-25 13:40:39,328 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (or (<= main_~m~0 0) (and (<= 1 main_~x~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)))) [2020-09-25 13:40:39,329 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 13:40:39,329 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 13:40:39,329 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (= main_~m~0 0)) (.cse1 (<= 1 main_~x~0))) (or (and .cse0 (= main_~x~0 0)) (and .cse1 .cse0) (and .cse1 (<= 1 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0))))) [2020-09-25 13:40:39,329 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 22) the Hoare annotation is: (or (and (<= 1 main_~x~0) (<= 1 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0))) (and (<= 0 main_~m~0) (<= main_~m~0 0))) [2020-09-25 13:40:39,329 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed. [2020-09-25 13:40:39,330 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-09-25 13:40:39,330 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 13:40:39,330 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 13:40:39,330 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 20) no Hoare annotation was computed. [2020-09-25 13:40:39,330 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 13:40:39,330 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 13:40:39,331 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 13:40:39,331 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 13:40:39,331 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-25 13:40:39,331 INFO L268 CegarLoopResult]: For program point L18-5(lines 18 20) no Hoare annotation was computed. [2020-09-25 13:40:39,331 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 13:40:39,331 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 13:40:39,332 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 13:40:39,332 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 13:40:39,332 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 13:40:39,332 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 13:40:39,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:40:39 BoogieIcfgContainer [2020-09-25 13:40:39,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:40:39,360 INFO L168 Benchmark]: Toolchain (without parser) took 3233.10 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 101.9 MB in the beginning and 114.2 MB in the end (delta: -12.3 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. [2020-09-25 13:40:39,361 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 13:40:39,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.45 ms. Allocated memory is still 139.5 MB. Free memory was 101.3 MB in the beginning and 91.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 13:40:39,363 INFO L168 Benchmark]: Boogie Preprocessor took 119.19 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 91.9 MB in the beginning and 182.5 MB in the end (delta: -90.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:40:39,364 INFO L168 Benchmark]: RCFGBuilder took 309.27 ms. Allocated memory is still 202.9 MB. Free memory was 182.5 MB in the beginning and 168.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-09-25 13:40:39,365 INFO L168 Benchmark]: TraceAbstraction took 2493.16 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 167.8 MB in the beginning and 114.2 MB in the end (delta: 53.6 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. [2020-09-25 13:40:39,369 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 303.45 ms. Allocated memory is still 139.5 MB. Free memory was 101.3 MB in the beginning and 91.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.19 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 91.9 MB in the beginning and 182.5 MB in the end (delta: -90.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 309.27 ms. Allocated memory is still 202.9 MB. Free memory was 182.5 MB in the beginning and 168.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2493.16 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 167.8 MB in the beginning and 114.2 MB in the end (delta: 53.6 MB). Peak memory consumption was 86.7 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: 17]: Loop Invariant Derived loop invariant: ((m == 0 && x == 0) || (1 <= x && m == 0)) || ((1 <= x && 1 <= m) && (n <= 0 || m < n)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 81 SDslu, 394 SDs, 0 SdLazy, 138 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 24 NumberOfFragments, 71 HoareAnnotationTreeSize, 15 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 5619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 13/17 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...