/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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:51:09,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:51:09,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:51:09,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:51:09,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:51:09,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:51:09,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:51:09,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:51:09,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:51:09,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:51:09,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:51:09,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:51:09,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:51:09,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:51:09,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:51:09,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:51:09,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:51:09,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:51:09,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:51:09,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:51:09,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:51:09,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:51:09,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:51:09,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:51:09,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:51:09,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:51:09,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:51:09,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:51:09,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:51:09,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:51:09,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:51:09,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:51:09,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:51:09,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:51:09,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:51:09,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:51:09,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:51:09,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:51:09,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:51:09,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:51:09,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:51:09,825 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 06:51:09,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:51:09,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:51:09,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:51:09,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:51:09,874 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:51:09,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:51:09,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:51:09,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:51:09,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:51:09,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:51:09,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:51:09,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:51:09,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:51:09,878 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:51:09,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:51:09,878 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:51:09,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:51:09,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:51:09,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:51:09,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:51:09,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:51:09,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:51:09,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:51:09,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:51:09,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:51:09,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:51:09,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:51:09,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:51:09,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:51:09,882 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:51:10,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:51:10,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:51:10,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:51:10,427 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:51:10,428 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:51:10,430 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2020-09-25 06:51:10,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0988c5e7e/3766319021914d83b3a9a3b298ab3636/FLAGad02a7428 [2020-09-25 06:51:11,088 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:51:11,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2020-09-25 06:51:11,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0988c5e7e/3766319021914d83b3a9a3b298ab3636/FLAGad02a7428 [2020-09-25 06:51:11,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0988c5e7e/3766319021914d83b3a9a3b298ab3636 [2020-09-25 06:51:11,426 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:51:11,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:51:11,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:51:11,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:51:11,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:51:11,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:51:11" (1/1) ... [2020-09-25 06:51:11,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@724e5b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:11, skipping insertion in model container [2020-09-25 06:51:11,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:51:11" (1/1) ... [2020-09-25 06:51:11,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:51:11,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:51:11,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:51:11,696 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:51:11,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:51:11,748 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:51:11,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:11 WrapperNode [2020-09-25 06:51:11,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:51:11,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:51:11,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:51:11,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:51:11,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:11" (1/1) ... [2020-09-25 06:51:11,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:11" (1/1) ... [2020-09-25 06:51:11,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:11" (1/1) ... [2020-09-25 06:51:11,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:11" (1/1) ... [2020-09-25 06:51:11,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:11" (1/1) ... [2020-09-25 06:51:11,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:11" (1/1) ... [2020-09-25 06:51:11,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:11" (1/1) ... [2020-09-25 06:51:11,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:51:11,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:51:11,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:51:11,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:51:11,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:11" (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 06:51:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:51:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:51:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 06:51:11,955 INFO L138 BoogieDeclarations]: Found implementation of procedure printEven [2020-09-25 06:51:11,955 INFO L138 BoogieDeclarations]: Found implementation of procedure printOdd [2020-09-25 06:51:11,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:51:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:51:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:51:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 06:51:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure printEven [2020-09-25 06:51:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure printOdd [2020-09-25 06:51:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:51:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 06:51:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:51:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:51:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:51:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:51:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:51:12,315 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:51:12,315 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 06:51:12,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:51:12 BoogieIcfgContainer [2020-09-25 06:51:12,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:51:12,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:51:12,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:51:12,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:51:12,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:51:11" (1/3) ... [2020-09-25 06:51:12,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c730c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:51:12, skipping insertion in model container [2020-09-25 06:51:12,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:51:11" (2/3) ... [2020-09-25 06:51:12,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c730c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:51:12, skipping insertion in model container [2020-09-25 06:51:12,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:51:12" (3/3) ... [2020-09-25 06:51:12,331 INFO L109 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2020-09-25 06:51:12,344 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:51:12,354 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:51:12,378 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:51:12,412 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:51:12,412 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:51:12,413 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:51:12,413 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:51:12,413 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:51:12,413 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:51:12,413 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:51:12,413 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:51:12,439 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-25 06:51:12,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 06:51:12,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:51:12,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:51:12,449 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:51:12,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:51:12,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1447674201, now seen corresponding path program 1 times [2020-09-25 06:51:12,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:51:12,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646045522] [2020-09-25 06:51:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:51:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:12,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:12,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:13,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:13,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 06:51:13,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:51:13,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-09-25 06:51:13,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:13,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:51:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:51:13,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:51:13,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:51:13,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:51:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:13,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:13,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:13,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:51:13,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:51:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:51:13,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:13,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:51:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:51:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:51:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:13,531 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 06:51:13,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646045522] [2020-09-25 06:51:13,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:51:13,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:51:13,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788953170] [2020-09-25 06:51:13,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:51:13,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:51:13,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:51:13,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:51:13,557 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-25 06:51:13,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:51:13,752 INFO L93 Difference]: Finished difference Result 110 states and 130 transitions. [2020-09-25 06:51:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:51:13,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-25 06:51:13,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:51:13,768 INFO L225 Difference]: With dead ends: 110 [2020-09-25 06:51:13,768 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 06:51:13,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 06:51:13,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 06:51:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 06:51:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 06:51:13,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-09-25 06:51:13,833 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 26 [2020-09-25 06:51:13,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:51:13,834 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-09-25 06:51:13,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:51:13,834 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-09-25 06:51:13,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 06:51:13,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:51:13,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:51:13,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:51:13,837 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:51:13,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:51:13,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1779758876, now seen corresponding path program 1 times [2020-09-25 06:51:13,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:51:13,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048817057] [2020-09-25 06:51:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:51:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:13,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:14,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:14,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:14,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 06:51:14,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:51:14,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-09-25 06:51:14,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:14,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:51:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:51:14,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:51:14,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:51:14,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:51:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:14,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:14,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:14,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:51:14,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:51:14,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:51:14,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:14,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:14,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:51:14,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:51:14,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:51:14,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:51:14,650 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 06:51:14,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048817057] [2020-09-25 06:51:14,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:51:14,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:51:14,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978611919] [2020-09-25 06:51:14,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:51:14,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:51:14,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:51:14,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:51:14,665 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 6 states. [2020-09-25 06:51:14,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:51:14,948 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2020-09-25 06:51:14,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:51:14,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-25 06:51:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:51:14,951 INFO L225 Difference]: With dead ends: 125 [2020-09-25 06:51:14,951 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 06:51:14,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:51:14,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 06:51:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 60. [2020-09-25 06:51:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 06:51:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-09-25 06:51:14,970 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 26 [2020-09-25 06:51:14,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:51:14,970 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-09-25 06:51:14,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:51:14,971 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-09-25 06:51:14,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 06:51:14,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:51:14,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:51:14,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:51:14,973 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:51:14,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:51:14,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1567937856, now seen corresponding path program 1 times [2020-09-25 06:51:14,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:51:14,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597354089] [2020-09-25 06:51:14,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:51:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:15,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:15,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:15,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 06:51:15,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:51:15,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-25 06:51:15,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:15,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:15,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:51:15,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 06:51:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:51:15,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:15,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:51:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:15,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:15,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:15,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:51:15,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:51:15,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:51:15,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:15,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:51:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:51:15,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:51:15,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:51:15,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597354089] [2020-09-25 06:51:15,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:51:15,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 06:51:15,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446332279] [2020-09-25 06:51:15,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:51:15,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:51:15,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:51:15,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:51:15,454 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 10 states. [2020-09-25 06:51:15,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:51:15,923 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-09-25 06:51:15,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:51:15,924 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-09-25 06:51:15,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:51:15,926 INFO L225 Difference]: With dead ends: 68 [2020-09-25 06:51:15,926 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 06:51:15,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:51:15,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 06:51:15,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-09-25 06:51:15,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 06:51:15,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-09-25 06:51:15,937 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 33 [2020-09-25 06:51:15,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:51:15,938 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-09-25 06:51:15,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:51:15,938 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-09-25 06:51:15,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 06:51:15,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:51:15,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:51:15,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:51:15,941 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:51:15,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:51:15,942 INFO L82 PathProgramCache]: Analyzing trace with hash -741681537, now seen corresponding path program 1 times [2020-09-25 06:51:15,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:51:15,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142331276] [2020-09-25 06:51:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:51:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:15,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:16,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:19,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:19,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 06:51:19,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:51:19,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3038 [2020-09-25 06:51:19,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:19,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:19,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:51:19,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 06:51:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:51:19,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:51:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:51:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:19,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:19,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:19,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:51:19,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:51:19,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:51:19,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:19,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:19,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:51:19,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:51:19,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:51:19,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:51:19,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142331276] [2020-09-25 06:51:19,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:51:19,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:51:19,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083896607] [2020-09-25 06:51:19,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:51:19,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:51:19,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:51:19,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:51:19,303 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 12 states. [2020-09-25 06:51:20,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:51:20,109 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2020-09-25 06:51:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:51:20,110 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-09-25 06:51:20,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:51:20,112 INFO L225 Difference]: With dead ends: 133 [2020-09-25 06:51:20,112 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 06:51:20,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-09-25 06:51:20,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 06:51:20,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 92. [2020-09-25 06:51:20,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 06:51:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-09-25 06:51:20,127 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 42 [2020-09-25 06:51:20,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:51:20,127 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-09-25 06:51:20,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:51:20,128 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-09-25 06:51:20,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 06:51:20,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:51:20,130 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:51:20,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:51:20,130 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:51:20,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:51:20,131 INFO L82 PathProgramCache]: Analyzing trace with hash 583132947, now seen corresponding path program 1 times [2020-09-25 06:51:20,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:51:20,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028820476] [2020-09-25 06:51:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:51:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:20,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:20,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:20,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:22,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:22,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:24,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:25,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:25,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 06:51:25,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:51:25,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 06:51:25,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:25,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:51:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:51:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:51:25,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:25,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:51:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:25,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:25,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:25,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:51:25,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:51:25,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:51:25,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:25,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:25,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:51:25,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:51:25,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:51:25,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:51:25,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028820476] [2020-09-25 06:51:25,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:51:25,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:51:25,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145773282] [2020-09-25 06:51:25,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:51:25,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:51:25,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:51:25,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:51:25,296 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 10 states. [2020-09-25 06:51:25,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:51:25,776 INFO L93 Difference]: Finished difference Result 199 states and 225 transitions. [2020-09-25 06:51:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:51:25,776 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-09-25 06:51:25,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:51:25,780 INFO L225 Difference]: With dead ends: 199 [2020-09-25 06:51:25,781 INFO L226 Difference]: Without dead ends: 151 [2020-09-25 06:51:25,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:51:25,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-25 06:51:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 121. [2020-09-25 06:51:25,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-25 06:51:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 134 transitions. [2020-09-25 06:51:25,796 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 134 transitions. Word has length 49 [2020-09-25 06:51:25,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:51:25,797 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 134 transitions. [2020-09-25 06:51:25,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:51:25,797 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 134 transitions. [2020-09-25 06:51:25,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 06:51:25,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:51:25,799 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:51:25,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:51:25,799 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:51:25,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:51:25,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1432806336, now seen corresponding path program 1 times [2020-09-25 06:51:25,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:51:25,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282471041] [2020-09-25 06:51:25,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:51:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:25,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:25,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:25,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:26,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:27,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:28,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:28,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:30,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:30,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 06:51:30,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:51:30,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:51:30,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:30,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:51:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 06:51:30,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:51:30,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:30,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:51:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:30,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:30,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:51:30,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:51:30,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:51:30,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:30,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:30,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:51:30,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:51:30,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:51:30,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:30,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:51:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:30,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:30,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:30,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 06:51:30,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:51:30,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:51:30,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:30,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:51:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:51:30,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:51:30,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:30,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 06:51:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:30,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:30,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:30,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:51:30,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:51:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:51:30,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:31,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:51:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:51:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:51:31,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:51:31,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282471041] [2020-09-25 06:51:31,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:51:31,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:51:31,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568022258] [2020-09-25 06:51:31,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:51:31,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:51:31,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:51:31,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:51:31,017 INFO L87 Difference]: Start difference. First operand 121 states and 134 transitions. Second operand 8 states. [2020-09-25 06:51:31,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:51:31,527 INFO L93 Difference]: Finished difference Result 178 states and 197 transitions. [2020-09-25 06:51:31,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:51:31,528 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-09-25 06:51:31,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:51:31,529 INFO L225 Difference]: With dead ends: 178 [2020-09-25 06:51:31,529 INFO L226 Difference]: Without dead ends: 129 [2020-09-25 06:51:31,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:51:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-09-25 06:51:31,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 102. [2020-09-25 06:51:31,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 06:51:31,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-09-25 06:51:31,555 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 53 [2020-09-25 06:51:31,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:51:31,555 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-09-25 06:51:31,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:51:31,557 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-09-25 06:51:31,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 06:51:31,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:51:31,562 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:51:31,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:51:31,562 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:51:31,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:51:31,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2046698769, now seen corresponding path program 2 times [2020-09-25 06:51:31,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:51:31,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341736472] [2020-09-25 06:51:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:51:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:31,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:31,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:35,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:36,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:36,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:51:36,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:51:36,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 06:51:36,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:36,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:51:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:51:36,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 06:51:36,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:36,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:51:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:36,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:36,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:36,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:51:36,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:51:36,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:51:36,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:36,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:36,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:51:36,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:51:36,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:51:36,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 06:51:36,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341736472] [2020-09-25 06:51:36,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:51:36,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:51:36,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485622742] [2020-09-25 06:51:36,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:51:36,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:51:36,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:51:36,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:51:36,697 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand 10 states. [2020-09-25 06:51:37,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:51:37,147 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2020-09-25 06:51:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 06:51:37,148 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-09-25 06:51:37,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:51:37,149 INFO L225 Difference]: With dead ends: 159 [2020-09-25 06:51:37,149 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 06:51:37,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2020-09-25 06:51:37,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 06:51:37,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2020-09-25 06:51:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 06:51:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2020-09-25 06:51:37,160 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 56 [2020-09-25 06:51:37,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:51:37,161 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2020-09-25 06:51:37,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:51:37,161 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2020-09-25 06:51:37,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 06:51:37,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:51:37,163 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:51:37,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:51:37,163 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:51:37,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:51:37,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1800344370, now seen corresponding path program 3 times [2020-09-25 06:51:37,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:51:37,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835543555] [2020-09-25 06:51:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:51:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:37,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:37,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:37,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:37,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:38,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:40,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:40,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:42,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:42,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 06:51:42,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:51:42,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 06:51:42,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:42,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:42,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:51:42,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-25 06:51:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:51:42,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:42,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:51:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:42,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:42,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:42,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:51:42,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:51:42,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:51:42,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:42,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:51:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:51:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:51:42,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 06:51:42,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835543555] [2020-09-25 06:51:42,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:51:42,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:51:42,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898785455] [2020-09-25 06:51:42,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:51:42,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:51:42,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:51:42,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:51:42,354 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand 8 states. [2020-09-25 06:51:42,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:51:42,843 INFO L93 Difference]: Finished difference Result 153 states and 166 transitions. [2020-09-25 06:51:42,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:51:42,843 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 06:51:42,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:51:42,845 INFO L225 Difference]: With dead ends: 153 [2020-09-25 06:51:42,845 INFO L226 Difference]: Without dead ends: 132 [2020-09-25 06:51:42,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:51:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-25 06:51:42,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 115. [2020-09-25 06:51:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 06:51:42,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2020-09-25 06:51:42,866 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 63 [2020-09-25 06:51:42,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:51:42,866 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions. [2020-09-25 06:51:42,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:51:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2020-09-25 06:51:42,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 06:51:42,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:51:42,868 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:51:42,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:51:42,868 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:51:42,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:51:42,870 INFO L82 PathProgramCache]: Analyzing trace with hash 56994667, now seen corresponding path program 1 times [2020-09-25 06:51:42,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:51:42,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343581596] [2020-09-25 06:51:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:51:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:42,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:43,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:43,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:44,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:44,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:44,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:45,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:47,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:47,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:51:47,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:51:47,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 06:51:47,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:47,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:47,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:51:47,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 06:51:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:51:47,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:51:48,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:51:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:48,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:48,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:48,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:51:48,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:51:48,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:51:48,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:48,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:51:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:51:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:51:48,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:48,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 06:51:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:48,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:48,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:48,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 06:51:48,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:51:48,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:51:48,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:48,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:51:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:51:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:51:48,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:48,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 06:51:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:51:48,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:51:48,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:51:48,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:51:48,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:51:48,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:51:48,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:51:48,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:51:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:51:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:51:48,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:51:48,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:51:48,099 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 06:51:48,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343581596] [2020-09-25 06:51:48,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:51:48,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 06:51:48,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448117787] [2020-09-25 06:51:48,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:51:48,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:51:48,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:51:48,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:51:48,102 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand 10 states. [2020-09-25 06:51:48,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:51:48,494 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2020-09-25 06:51:48,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:51:48,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-09-25 06:51:48,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:51:48,498 INFO L225 Difference]: With dead ends: 117 [2020-09-25 06:51:48,498 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 06:51:48,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:51:48,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 06:51:48,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 06:51:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 06:51:48,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 06:51:48,501 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2020-09-25 06:51:48,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:51:48,501 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 06:51:48,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:51:48,501 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 06:51:48,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 06:51:48,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:51:48,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 06:51:48,934 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-09-25 06:51:49,063 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 06:51:49,063 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 06:51:49,063 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 06:51:49,064 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 06:51:49,064 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 06:51:49,064 INFO L271 CegarLoopResult]: At program point printOddENTRY(lines 7 9) the Hoare annotation is: true [2020-09-25 06:51:49,065 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (or (not (<= 1 (+ (* 2 (div (+ (* |printOdd_#in~i| (- 1)) 1) 2)) |printOdd_#in~i|))) (<= (+ (* 2 (div printOdd_~i 2)) 1) printOdd_~i)) [2020-09-25 06:51:49,066 INFO L268 CegarLoopResult]: For program point printOddFINAL(lines 7 9) no Hoare annotation was computed. [2020-09-25 06:51:49,066 INFO L268 CegarLoopResult]: For program point printOddEXIT(lines 7 9) no Hoare annotation was computed. [2020-09-25 06:51:49,066 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 06:51:49,066 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 06:51:49,066 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 06:51:49,067 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 06:51:49,067 INFO L268 CegarLoopResult]: For program point printEvenEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 06:51:49,067 INFO L271 CegarLoopResult]: At program point printEvenENTRY(lines 4 6) the Hoare annotation is: true [2020-09-25 06:51:49,067 INFO L268 CegarLoopResult]: For program point printEvenFINAL(lines 4 6) no Hoare annotation was computed. [2020-09-25 06:51:49,067 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (or (not (<= 0 (+ (* 2 (div (* |printEven_#in~i| (- 1)) 2)) |printEven_#in~i|))) (<= printEven_~i (* 2 (div printEven_~i 2)))) [2020-09-25 06:51:49,067 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 36) no Hoare annotation was computed. [2020-09-25 06:51:49,068 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 06:51:49,069 INFO L268 CegarLoopResult]: For program point L23-1(lines 23 26) no Hoare annotation was computed. [2020-09-25 06:51:49,069 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 06:51:49,069 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 06:51:49,069 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 06:51:49,069 INFO L264 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: (let ((.cse0 (<= 1 (let ((.cse2 (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)))) (+ .cse2 (* 2 (div (+ (* .cse2 (- 1)) 1) 2)))))) (.cse1 (<= 1 (+ |main_#t~mem8| (* 2 (div (+ (* |main_#t~mem8| (- 1)) 1) 2)))))) (or (and (<= (+ main_~i~0 1) main_~num~0) .cse0 (<= 2 main_~num~0) .cse1) (and (= main_~i~0 0) .cse0 .cse1))) [2020-09-25 06:51:49,069 INFO L268 CegarLoopResult]: For program point L32-2(line 32) no Hoare annotation was computed. [2020-09-25 06:51:49,070 INFO L268 CegarLoopResult]: For program point L28-2(lines 28 34) no Hoare annotation was computed. [2020-09-25 06:51:49,070 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-25 06:51:49,070 INFO L268 CegarLoopResult]: For program point L28-4(line 28) no Hoare annotation was computed. [2020-09-25 06:51:49,070 INFO L264 CegarLoopResult]: At program point L28-5(lines 28 34) the Hoare annotation is: (or (= main_~i~0 0) (and (<= main_~i~0 1) (<= main_~num~0 main_~i~0)) (<= 2 main_~num~0)) [2020-09-25 06:51:49,070 INFO L268 CegarLoopResult]: For program point L28-6(lines 28 34) no Hoare annotation was computed. [2020-09-25 06:51:49,070 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 06:51:49,070 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2020-09-25 06:51:49,071 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 06:51:49,071 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-25 06:51:49,071 INFO L268 CegarLoopResult]: For program point L16-5(line 16) no Hoare annotation was computed. [2020-09-25 06:51:49,071 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 06:51:49,071 INFO L264 CegarLoopResult]: At program point L16-6(lines 16 19) the Hoare annotation is: (let ((.cse0 (<= 1 main_~i~0))) (or (and .cse0 (<= main_~i~0 1)) (and .cse0 (<= 2 main_~num~0)) (and (<= main_~i~0 0) (<= 0 main_~i~0)))) [2020-09-25 06:51:49,071 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 06:51:49,072 INFO L268 CegarLoopResult]: For program point L16-7(lines 16 19) no Hoare annotation was computed. [2020-09-25 06:51:49,072 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 06:51:49,072 INFO L264 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: (let ((.cse0 (<= 0 (+ (* 2 (div (* |main_#t~mem5| (- 1)) 2)) |main_#t~mem5|))) (.cse1 (<= 0 (let ((.cse2 (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)))) (+ .cse2 (* 2 (div (* .cse2 (- 1)) 2))))))) (or (and (<= main_~i~0 0) .cse0 .cse1) (and (<= (+ main_~i~0 1) main_~num~0) .cse0 .cse1))) [2020-09-25 06:51:49,072 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-25 06:51:49,072 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2020-09-25 06:51:49,072 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-25 06:51:49,073 INFO L268 CegarLoopResult]: For program point L21-4(line 21) no Hoare annotation was computed. [2020-09-25 06:51:49,073 INFO L271 CegarLoopResult]: At program point L21-5(lines 21 27) the Hoare annotation is: true [2020-09-25 06:51:49,073 INFO L268 CegarLoopResult]: For program point L21-6(lines 21 27) no Hoare annotation was computed. [2020-09-25 06:51:49,073 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 36) no Hoare annotation was computed. [2020-09-25 06:51:49,074 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 06:51:49,074 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 36) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 06:51:49,074 INFO L268 CegarLoopResult]: For program point L30-1(lines 30 33) no Hoare annotation was computed. [2020-09-25 06:51:49,074 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-25 06:51:49,074 INFO L268 CegarLoopResult]: For program point L30-4(line 30) no Hoare annotation was computed. [2020-09-25 06:51:49,074 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 06:51:49,075 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 06:51:49,075 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 06:51:49,075 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 06:51:49,075 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 06:51:49,075 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 06:51:49,075 INFO L268 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-09-25 06:51:49,076 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2020-09-25 06:51:49,076 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2020-09-25 06:51:49,076 INFO L268 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-09-25 06:51:49,076 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-09-25 06:51:49,076 INFO L268 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-09-25 06:51:49,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:51:49 BoogieIcfgContainer [2020-09-25 06:51:49,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:51:49,107 INFO L168 Benchmark]: Toolchain (without parser) took 37678.92 ms. Allocated memory was 140.5 MB in the beginning and 413.1 MB in the end (delta: 272.6 MB). Free memory was 103.8 MB in the beginning and 206.3 MB in the end (delta: -102.6 MB). Peak memory consumption was 170.0 MB. Max. memory is 7.1 GB. [2020-09-25 06:51:49,109 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-25 06:51:49,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.65 ms. Allocated memory is still 140.5 MB. Free memory was 102.9 MB in the beginning and 92.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 06:51:49,112 INFO L168 Benchmark]: Boogie Preprocessor took 125.35 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 181.2 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:51:49,117 INFO L168 Benchmark]: RCFGBuilder took 446.72 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 162.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-09-25 06:51:49,118 INFO L168 Benchmark]: TraceAbstraction took 36781.32 ms. Allocated memory was 203.4 MB in the beginning and 413.1 MB in the end (delta: 209.7 MB). Free memory was 162.3 MB in the beginning and 206.3 MB in the end (delta: -44.0 MB). Peak memory consumption was 165.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:51:49,131 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.65 ms. Allocated memory is still 140.5 MB. Free memory was 102.9 MB in the beginning and 92.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.35 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 181.2 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.72 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 162.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36781.32 ms. Allocated memory was 203.4 MB in the beginning and 413.1 MB in the end (delta: 209.7 MB). Free memory was 162.3 MB in the beginning and 206.3 MB in the end (delta: -44.0 MB). Peak memory consumption was 165.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 28]: Loop Invariant Derived loop invariant: (i == 0 || (i <= 1 && num <= i)) || 2 <= num - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((1 <= i && i <= 1) || (1 <= i && 2 <= num)) || (i <= 0 && 0 <= i) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 36.0s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 508 SDtfs, 511 SDslu, 1925 SDs, 0 SdLazy, 2086 SolverSat, 150 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 143 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 59 PreInvPairs, 86 NumberOfFragments, 284 HoareAnnotationTreeSize, 59 FomulaSimplifications, 928 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 14 FomulaSimplificationsInter, 981 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 31.2s InterpolantComputationTime, 422 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 413 ConstructedInterpolants, 0 QuantifiedInterpolants, 89040 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 51/68 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...