/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=WIDESTAMONGSMALL --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-new/count_by_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:45:02,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:45:02,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:45:02,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:45:02,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:45:02,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:45:02,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:45:02,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:45:02,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:45:02,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:45:02,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:45:02,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:45:02,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:45:02,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:45:02,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:45:02,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:45:02,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:45:02,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:45:02,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:45:02,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:45:02,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:45:02,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:45:02,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:45:02,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:45:02,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:45:02,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:45:02,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:45:02,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:45:02,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:45:02,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:45:02,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:45:02,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:45:02,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:45:02,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:45:02,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:45:02,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:45:02,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:45:02,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:45:02,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:45:02,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:45:02,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:45:02,699 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 05:45:02,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:45:02,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:45:02,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:45:02,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:45:02,726 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:45:02,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:45:02,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:45:02,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:45:02,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:45:02,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:45:02,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:45:02,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:45:02,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:45:02,728 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:45:02,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:45:02,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:45:02,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:45:02,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:45:02,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:45:02,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:45:02,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:45:02,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:45:02,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:45:02,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:45:02,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:45:02,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:45:02,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:45:02,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:45:02,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:45:02,732 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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:45:03,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:45:03,208 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:45:03,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:45:03,218 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:45:03,220 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:45:03,221 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1.i [2020-09-25 05:45:03,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d62ed449/6e00d3c5e36a49f4bd2f06249fb739e1/FLAG94b37f3ff [2020-09-25 05:45:03,930 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:45:03,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/count_by_1.i [2020-09-25 05:45:03,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d62ed449/6e00d3c5e36a49f4bd2f06249fb739e1/FLAG94b37f3ff [2020-09-25 05:45:04,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d62ed449/6e00d3c5e36a49f4bd2f06249fb739e1 [2020-09-25 05:45:04,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:45:04,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:45:04,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:45:04,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:45:04,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:45:04,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:45:04" (1/1) ... [2020-09-25 05:45:04,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7033e2bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:04, skipping insertion in model container [2020-09-25 05:45:04,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:45:04" (1/1) ... [2020-09-25 05:45:04,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:45:04,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:45:04,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:45:04,572 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:45:04,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:45:04,611 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:45:04,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:04 WrapperNode [2020-09-25 05:45:04,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:45:04,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:45:04,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:45:04,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:45:04,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:04" (1/1) ... [2020-09-25 05:45:04,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:04" (1/1) ... [2020-09-25 05:45:04,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:04" (1/1) ... [2020-09-25 05:45:04,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:04" (1/1) ... [2020-09-25 05:45:04,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:04" (1/1) ... [2020-09-25 05:45:04,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:04" (1/1) ... [2020-09-25 05:45:04,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:04" (1/1) ... [2020-09-25 05:45:04,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:45:04,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:45:04,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:45:04,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:45:04,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:04" (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 05:45:04,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:45:04,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:45:04,822 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 05:45:04,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 05:45:04,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:45:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:45:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 05:45:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 05:45:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 05:45:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:45:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:45:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:45:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:45:05,068 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:45:05,068 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:45:05,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:45:05 BoogieIcfgContainer [2020-09-25 05:45:05,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:45:05,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:45:05,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:45:05,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:45:05,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:45:04" (1/3) ... [2020-09-25 05:45:05,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58da56d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:45:05, skipping insertion in model container [2020-09-25 05:45:05,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:45:04" (2/3) ... [2020-09-25 05:45:05,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58da56d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:45:05, skipping insertion in model container [2020-09-25 05:45:05,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:45:05" (3/3) ... [2020-09-25 05:45:05,103 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1.i [2020-09-25 05:45:05,123 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:45:05,136 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:45:05,185 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:45:05,220 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:45:05,221 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:45:05,221 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:45:05,221 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:45:05,221 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:45:05,221 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:45:05,222 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:45:05,222 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:45:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-25 05:45:05,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-25 05:45:05,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:45:05,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:45:05,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:45:05,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:45:05,262 INFO L82 PathProgramCache]: Analyzing trace with hash 574813456, now seen corresponding path program 1 times [2020-09-25 05:45:05,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:45:05,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863032679] [2020-09-25 05:45:05,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:45:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:05,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:05,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:05,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:45:05,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:05,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 05:45:05,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:05,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:45:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:45:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:45:05,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:45:05,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:45:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:05,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:05,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:05,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:45:05,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:05,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:45:05,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:05,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:05,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:05,524 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 05:45:05,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863032679] [2020-09-25 05:45:05,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:45:05,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:45:05,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067747044] [2020-09-25 05:45:05,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:45:05,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:45:05,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:45:05,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:45:05,559 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-09-25 05:45:05,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:45:05,623 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-09-25 05:45:05,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:45:05,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-25 05:45:05,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:45:05,637 INFO L225 Difference]: With dead ends: 37 [2020-09-25 05:45:05,637 INFO L226 Difference]: Without dead ends: 18 [2020-09-25 05:45:05,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:45:05,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-09-25 05:45:05,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-09-25 05:45:05,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-09-25 05:45:05,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-09-25 05:45:05,699 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2020-09-25 05:45:05,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:45:05,700 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-09-25 05:45:05,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:45:05,701 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-09-25 05:45:05,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 05:45:05,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:45:05,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:45:05,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:45:05,703 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:45:05,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:45:05,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1625616653, now seen corresponding path program 1 times [2020-09-25 05:45:05,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:45:05,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374049282] [2020-09-25 05:45:05,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:45:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:05,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:05,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:05,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:05,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:45:05,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:45:05,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 05:45:05,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:05,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:45:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:45:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:45:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:45:05,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:45:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:05,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:05,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:05,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:45:05,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:05,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:45:05,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:05,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:05,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:05,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:05,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:05,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:05,980 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 05:45:05,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374049282] [2020-09-25 05:45:05,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:45:05,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:45:05,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937578739] [2020-09-25 05:45:05,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:45:05,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:45:05,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:45:05,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:45:05,985 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2020-09-25 05:45:06,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:45:06,062 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-09-25 05:45:06,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:45:06,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-25 05:45:06,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:45:06,064 INFO L225 Difference]: With dead ends: 27 [2020-09-25 05:45:06,064 INFO L226 Difference]: Without dead ends: 22 [2020-09-25 05:45:06,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:45:06,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-25 05:45:06,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-09-25 05:45:06,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-25 05:45:06,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-09-25 05:45:06,072 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 15 [2020-09-25 05:45:06,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:45:06,073 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-09-25 05:45:06,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:45:06,073 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-09-25 05:45:06,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 05:45:06,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:45:06,074 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:45:06,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:45:06,075 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:45:06,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:45:06,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1174316682, now seen corresponding path program 2 times [2020-09-25 05:45:06,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:45:06,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083225053] [2020-09-25 05:45:06,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:45:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:06,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:06,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:06,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:06,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 05:45:06,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:45:06,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-09-25 05:45:06,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:06,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:45:06,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:45:06,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:45:06,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:06,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:45:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:06,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:06,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:06,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:45:06,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:06,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:45:06,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:06,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:06,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:45:06,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083225053] [2020-09-25 05:45:06,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:45:06,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:45:06,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940355667] [2020-09-25 05:45:06,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:45:06,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:45:06,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:45:06,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:45:06,514 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 8 states. [2020-09-25 05:45:06,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:45:06,591 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-09-25 05:45:06,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:45:06,592 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-09-25 05:45:06,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:45:06,592 INFO L225 Difference]: With dead ends: 20 [2020-09-25 05:45:06,593 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:45:06,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:45:06,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:45:06,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:45:06,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:45:06,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:45:06,595 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-25 05:45:06,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:45:06,595 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:45:06,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:45:06,596 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:45:06,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:45:06,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:45:06,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 05:45:06,683 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 05:45:06,683 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:45:06,683 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:45:06,683 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 05:45:06,684 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 05:45:06,684 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:45:06,684 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 05:45:06,684 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 05:45:06,684 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 05:45:06,685 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 05:45:06,685 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 05:45:06,685 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 18) the Hoare annotation is: true [2020-09-25 05:45:06,685 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 18) no Hoare annotation was computed. [2020-09-25 05:45:06,685 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 05:45:06,685 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 05:45:06,686 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 18) no Hoare annotation was computed. [2020-09-25 05:45:06,686 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-25 05:45:06,686 INFO L268 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-09-25 05:45:06,686 INFO L268 CegarLoopResult]: For program point L15-5(line 15) no Hoare annotation was computed. [2020-09-25 05:45:06,686 INFO L264 CegarLoopResult]: At program point L15-6(line 15) the Hoare annotation is: (<= main_~i~0 1000000) [2020-09-25 05:45:06,687 INFO L264 CegarLoopResult]: At program point L15-7(line 15) the Hoare annotation is: (and (<= main_~i~0 1000000) (< 999999 main_~i~0)) [2020-09-25 05:45:06,687 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 05:45:06,687 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 05:45:06,687 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 05:45:06,688 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 05:45:06,688 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 05:45:06,688 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 05:45:06,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:45:06 BoogieIcfgContainer [2020-09-25 05:45:06,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:45:06,722 INFO L168 Benchmark]: Toolchain (without parser) took 2468.36 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 103.2 MB in the beginning and 91.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2020-09-25 05:45:06,723 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 05:45:06,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.89 ms. Allocated memory is still 146.3 MB. Free memory was 102.5 MB in the beginning and 93.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-25 05:45:06,727 INFO L168 Benchmark]: Boogie Preprocessor took 120.90 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 93.3 MB in the beginning and 181.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:45:06,729 INFO L168 Benchmark]: RCFGBuilder took 341.47 ms. Allocated memory is still 201.9 MB. Free memory was 181.8 MB in the beginning and 169.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 05:45:06,732 INFO L168 Benchmark]: TraceAbstraction took 1625.63 ms. Allocated memory is still 201.9 MB. Free memory was 168.4 MB in the beginning and 91.2 MB in the end (delta: 77.2 MB). Peak memory consumption was 77.2 MB. Max. memory is 7.1 GB. [2020-09-25 05:45:06,743 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 358.89 ms. Allocated memory is still 146.3 MB. Free memory was 102.5 MB in the beginning and 93.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.90 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 93.3 MB in the beginning and 181.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 341.47 ms. Allocated memory is still 201.9 MB. Free memory was 181.8 MB in the beginning and 169.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1625.63 ms. Allocated memory is still 201.9 MB. Free memory was 168.4 MB in the beginning and 91.2 MB in the end (delta: 77.2 MB). Peak memory consumption was 77.2 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: 15]: Loop Invariant Derived loop invariant: i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 11 SDslu, 79 SDs, 0 SdLazy, 51 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 15 HoareAnnotationTreeSize, 9 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 1104 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/7 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...