/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=0.2 --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 11:25:24,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:25:24,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:25:24,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:25:24,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:25:24,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:25:24,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:25:24,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:25:24,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:25:24,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:25:24,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:25:24,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:25:24,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:25:24,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:25:24,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:25:24,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:25:24,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:25:24,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:25:24,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:25:24,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:25:24,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:25:24,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:25:24,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:25:24,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:25:24,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:25:24,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:25:24,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:25:24,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:25:24,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:25:24,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:25:24,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:25:24,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:25:24,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:25:24,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:25:24,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:25:24,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:25:24,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:25:24,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:25:24,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:25:24,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:25:24,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:25:24,531 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 11:25:24,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:25:24,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:25:24,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:25:24,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:25:24,559 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:25:24,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:25:24,560 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:25:24,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:25:24,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:25:24,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:25:24,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:25:24,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:25:24,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:25:24,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:25:24,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:25:24,562 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:25:24,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:25:24,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:25:24,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:25:24,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:25:24,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:25:24,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:25:24,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:25:24,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:25:24,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:25:24,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:25:24,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:25:24,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:25:24,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:25:24,564 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:25:25,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:25:25,096 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:25:25,101 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:25:25,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:25:25,103 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:25:25,104 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2020-09-25 11:25:25,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85a652131/78094ab24dce4b42a99da4f1d59c182b/FLAGfe17b01d3 [2020-09-25 11:25:25,638 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:25:25,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gj2007b.i [2020-09-25 11:25:25,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85a652131/78094ab24dce4b42a99da4f1d59c182b/FLAGfe17b01d3 [2020-09-25 11:25:26,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85a652131/78094ab24dce4b42a99da4f1d59c182b [2020-09-25 11:25:26,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:25:26,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:25:26,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:25:26,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:25:26,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:25:26,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:25:26" (1/1) ... [2020-09-25 11:25:26,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f58caab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:26, skipping insertion in model container [2020-09-25 11:25:26,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:25:26" (1/1) ... [2020-09-25 11:25:26,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:25:26,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:25:26,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:25:26,289 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:25:26,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:25:26,325 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:25:26,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:26 WrapperNode [2020-09-25 11:25:26,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:25:26,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:25:26,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:25:26,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:25:26,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:26" (1/1) ... [2020-09-25 11:25:26,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:26" (1/1) ... [2020-09-25 11:25:26,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:26" (1/1) ... [2020-09-25 11:25:26,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:26" (1/1) ... [2020-09-25 11:25:26,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:26" (1/1) ... [2020-09-25 11:25:26,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:26" (1/1) ... [2020-09-25 11:25:26,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:26" (1/1) ... [2020-09-25 11:25:26,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:25:26,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:25:26,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:25:26,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:25:26,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:26" (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 11:25:26,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:25:26,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:25:26,525 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 11:25:26,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 11:25:26,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:25:26,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:25:26,525 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 11:25:26,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 11:25:26,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 11:25:26,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:25:26,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:25:26,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:25:26,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:25:26,728 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:25:26,728 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:25:26,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:25:26 BoogieIcfgContainer [2020-09-25 11:25:26,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:25:26,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:25:26,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:25:26,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:25:26,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:25:26" (1/3) ... [2020-09-25 11:25:26,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a93bbbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:25:26, skipping insertion in model container [2020-09-25 11:25:26,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:26" (2/3) ... [2020-09-25 11:25:26,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a93bbbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:25:26, skipping insertion in model container [2020-09-25 11:25:26,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:25:26" (3/3) ... [2020-09-25 11:25:26,744 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2020-09-25 11:25:26,756 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:25:26,768 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:25:26,796 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:25:26,864 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:25:26,864 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:25:26,864 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:25:26,864 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:25:26,865 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:25:26,870 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:25:26,870 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:25:26,870 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:25:26,908 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-25 11:25:26,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-25 11:25:26,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:26,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:25:26,921 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:26,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:26,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1007675669, now seen corresponding path program 1 times [2020-09-25 11:25:26,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:26,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850055620] [2020-09-25 11:25:26,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:27,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:27,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:27,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:27,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 11:25:27,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:25:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 11:25:27,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:27,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:27,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:25:27,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:25:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:25:27,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:25:27,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:27,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:27,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:27,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:27,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:25:27,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:27,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:27,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:27,300 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 11:25:27,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850055620] [2020-09-25 11:25:27,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:25:27,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:25:27,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667825395] [2020-09-25 11:25:27,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:25:27,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:27,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:25:27,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:25:27,331 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-09-25 11:25:27,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:27,434 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2020-09-25 11:25:27,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:25:27,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-25 11:25:27,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:27,449 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:25:27,449 INFO L226 Difference]: Without dead ends: 37 [2020-09-25 11:25:27,454 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 11:25:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-25 11:25:27,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-09-25 11:25:27,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 11:25:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 11:25:27,501 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 14 [2020-09-25 11:25:27,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:27,502 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 11:25:27,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:25:27,502 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 11:25:27,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 11:25:27,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:27,504 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 11:25:27,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:25:27,504 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:27,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:27,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1988212296, now seen corresponding path program 1 times [2020-09-25 11:25:27,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:27,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896840703] [2020-09-25 11:25:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:27,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:27,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:27,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:27,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:25:27,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:25:27,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-25 11:25:27,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:27,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:25:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:25:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:25:27,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:27,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:27,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:27,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:27,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:27,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:27,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:25:27,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:27,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:27,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:27,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:25:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:27,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:27,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:27,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:27,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:25:27,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:27,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:27,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:27,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:27,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:27,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:27,853 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 11:25:27,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896840703] [2020-09-25 11:25:27,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:25:27,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:25:27,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812570714] [2020-09-25 11:25:27,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:25:27,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:27,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:25:27,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:25:27,862 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-09-25 11:25:27,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:27,908 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-09-25 11:25:27,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:25:27,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 11:25:27,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:27,910 INFO L225 Difference]: With dead ends: 43 [2020-09-25 11:25:27,910 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 11:25:27,911 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 11:25:27,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 11:25:27,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-09-25 11:25:27,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-25 11:25:27,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-09-25 11:25:27,918 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 19 [2020-09-25 11:25:27,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:27,918 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-09-25 11:25:27,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:25:27,919 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-09-25 11:25:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 11:25:27,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:27,920 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 11:25:27,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:25:27,920 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:27,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:27,921 INFO L82 PathProgramCache]: Analyzing trace with hash 2096508511, now seen corresponding path program 1 times [2020-09-25 11:25:27,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:27,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701118160] [2020-09-25 11:25:27,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:27,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:27,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:28,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:28,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:25:28,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:25:28,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 11:25:28,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:28,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:28,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:25:28,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:25:28,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:25:28,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:28,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:28,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:28,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:28,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:28,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:28,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:25:28,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:28,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:28,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:28,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:28,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:28,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:28,135 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 11:25:28,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701118160] [2020-09-25 11:25:28,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:25:28,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:25:28,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110981456] [2020-09-25 11:25:28,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:25:28,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:28,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:25:28,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:25:28,139 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-09-25 11:25:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:28,230 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-09-25 11:25:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:25:28,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-25 11:25:28,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:28,232 INFO L225 Difference]: With dead ends: 52 [2020-09-25 11:25:28,232 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 11:25:28,233 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 11:25:28,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 11:25:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2020-09-25 11:25:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 11:25:28,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 11:25:28,239 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20 [2020-09-25 11:25:28,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:28,240 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 11:25:28,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:25:28,240 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 11:25:28,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 11:25:28,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:28,241 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 11:25:28,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:25:28,242 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:28,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:28,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1151527866, now seen corresponding path program 1 times [2020-09-25 11:25:28,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:28,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829812836] [2020-09-25 11:25:28,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:28,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:28,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:28,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:25:28,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:25:28,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 11:25:28,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:28,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:28,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:25:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:25:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:25:28,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:28,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:28,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:28,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:28,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:28,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:28,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:25:28,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:28,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:28,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:28,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:28,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:28,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:28,503 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 11:25:28,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829812836] [2020-09-25 11:25:28,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:25:28,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:25:28,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887269211] [2020-09-25 11:25:28,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:25:28,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:28,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:25:28,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:25:28,506 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-09-25 11:25:28,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:28,585 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-09-25 11:25:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:25:28,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-09-25 11:25:28,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:28,587 INFO L225 Difference]: With dead ends: 44 [2020-09-25 11:25:28,587 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 11:25:28,588 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 11:25:28,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 11:25:28,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2020-09-25 11:25:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 11:25:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-09-25 11:25:28,595 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2020-09-25 11:25:28,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:28,596 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-09-25 11:25:28,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:25:28,596 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-09-25 11:25:28,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 11:25:28,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:28,597 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 11:25:28,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:25:28,598 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:28,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:28,598 INFO L82 PathProgramCache]: Analyzing trace with hash -2086501752, now seen corresponding path program 1 times [2020-09-25 11:25:28,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:28,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223111849] [2020-09-25 11:25:28,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:28,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:28,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:28,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:25:28,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:28,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 11:25:28,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:28,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:25:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:25:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 11:25:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:28,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:28,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:28,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:28,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:28,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:28,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:25:28,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:28,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:28,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:28,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:28,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:25:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:28,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:28,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:28,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:25:28,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:28,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:25:28,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:28,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:28,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:25:28,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:28,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:25:28,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:28,768 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 11:25:28,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223111849] [2020-09-25 11:25:28,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:25:28,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 11:25:28,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396182626] [2020-09-25 11:25:28,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:25:28,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:28,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:25:28,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:25:28,771 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 6 states. [2020-09-25 11:25:28,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:28,836 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-09-25 11:25:28,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:25:28,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-09-25 11:25:28,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:28,837 INFO L225 Difference]: With dead ends: 43 [2020-09-25 11:25:28,837 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 11:25:28,838 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 11:25:28,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 11:25:28,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 11:25:28,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 11:25:28,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 11:25:28,839 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-09-25 11:25:28,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:28,840 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 11:25:28,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:25:28,840 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 11:25:28,840 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 11:25:28,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:25:28,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 11:25:29,001 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 11:25:29,001 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:25:29,002 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:25:29,002 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 11:25:29,002 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 11:25:29,002 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 11:25:29,002 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 11:25:29,002 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 11:25:29,003 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 11:25:29,003 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 11:25:29,003 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 11:25:29,003 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-09-25 11:25:29,003 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 11:25:29,004 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 11:25:29,004 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 11:25:29,004 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 11:25:29,004 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 11:25:29,004 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed. [2020-09-25 11:25:29,005 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-09-25 11:25:29,005 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 11:25:29,005 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 11:25:29,005 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 20) no Hoare annotation was computed. [2020-09-25 11:25:29,005 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 11:25:29,005 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 11:25:29,006 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 11:25:29,006 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 11:25:29,006 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-25 11:25:29,006 INFO L268 CegarLoopResult]: For program point L18-5(lines 18 20) no Hoare annotation was computed. [2020-09-25 11:25:29,006 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 11:25:29,006 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 11:25:29,007 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 11:25:29,007 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 11:25:29,007 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 11:25:29,007 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 11:25:29,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:25:29 BoogieIcfgContainer [2020-09-25 11:25:29,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:25:29,035 INFO L168 Benchmark]: Toolchain (without parser) took 3012.32 ms. Allocated memory was 138.9 MB in the beginning and 231.7 MB in the end (delta: 92.8 MB). Free memory was 102.3 MB in the beginning and 112.1 MB in the end (delta: -9.8 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. [2020-09-25 11:25:29,035 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:25:29,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.83 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:25:29,037 INFO L168 Benchmark]: Boogie Preprocessor took 32.76 ms. Allocated memory is still 138.9 MB. Free memory was 92.1 MB in the beginning and 90.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:25:29,038 INFO L168 Benchmark]: RCFGBuilder took 374.45 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 90.6 MB in the beginning and 165.5 MB in the end (delta: -75.0 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 11:25:29,040 INFO L168 Benchmark]: TraceAbstraction took 2295.80 ms. Allocated memory was 199.8 MB in the beginning and 231.7 MB in the end (delta: 32.0 MB). Free memory was 165.5 MB in the beginning and 112.1 MB in the end (delta: 53.5 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:25:29,044 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.83 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.76 ms. Allocated memory is still 138.9 MB. Free memory was 92.1 MB in the beginning and 90.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 374.45 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 90.6 MB in the beginning and 165.5 MB in the end (delta: -75.0 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2295.80 ms. Allocated memory was 199.8 MB in the beginning and 231.7 MB in the end (delta: 32.0 MB). Free memory was 165.5 MB in the beginning and 112.1 MB in the end (delta: 53.5 MB). Peak memory consumption was 85.5 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: 1.9s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.4s, 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, 0.1s 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, 1.1s 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...