./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3e5ce664 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound100.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb4bb282415ebfcdf641882420f9b5b96567c902 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound100.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb4bb282415ebfcdf641882420f9b5b96567c902 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-3e5ce66 [2020-12-02 21:38:48,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 21:38:48,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 21:38:48,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 21:38:48,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 21:38:48,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 21:38:48,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 21:38:48,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 21:38:48,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 21:38:48,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 21:38:48,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 21:38:48,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 21:38:48,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 21:38:48,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 21:38:48,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 21:38:48,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 21:38:48,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 21:38:48,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 21:38:48,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 21:38:48,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 21:38:48,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 21:38:48,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 21:38:48,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 21:38:48,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 21:38:48,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 21:38:48,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 21:38:48,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 21:38:48,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 21:38:48,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 21:38:48,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 21:38:48,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 21:38:48,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 21:38:48,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 21:38:48,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 21:38:48,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 21:38:48,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 21:38:48,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 21:38:48,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 21:38:48,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 21:38:48,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 21:38:48,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 21:38:48,846 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 21:38:48,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 21:38:48,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 21:38:48,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 21:38:48,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 21:38:48,911 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 21:38:48,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 21:38:48,912 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 21:38:48,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 21:38:48,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 21:38:48,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 21:38:48,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 21:38:48,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 21:38:48,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 21:38:48,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 21:38:48,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 21:38:48,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 21:38:48,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 21:38:48,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 21:38:48,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 21:38:48,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 21:38:48,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 21:38:48,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 21:38:48,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 21:38:48,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 21:38:48,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 21:38:48,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 21:38:48,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 21:38:48,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 21:38:48,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb4bb282415ebfcdf641882420f9b5b96567c902 [2020-12-02 21:38:49,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 21:38:49,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 21:38:49,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 21:38:49,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 21:38:49,442 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 21:38:49,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound100.c [2020-12-02 21:38:49,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a2c44290/8a6ead69c8ca498eb077efaf6ebf1368/FLAGd01f9da15 [2020-12-02 21:38:50,127 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 21:38:50,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound100.c [2020-12-02 21:38:50,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a2c44290/8a6ead69c8ca498eb077efaf6ebf1368/FLAGd01f9da15 [2020-12-02 21:38:50,489 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a2c44290/8a6ead69c8ca498eb077efaf6ebf1368 [2020-12-02 21:38:50,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 21:38:50,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 21:38:50,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 21:38:50,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 21:38:50,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 21:38:50,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:38:50" (1/1) ... [2020-12-02 21:38:50,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2043b7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:50, skipping insertion in model container [2020-12-02 21:38:50,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:38:50" (1/1) ... [2020-12-02 21:38:50,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 21:38:50,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 21:38:50,736 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound100.c[537,550] [2020-12-02 21:38:50,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:38:50,765 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 21:38:50,780 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound100.c[537,550] [2020-12-02 21:38:50,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:38:50,807 INFO L208 MainTranslator]: Completed translation [2020-12-02 21:38:50,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:50 WrapperNode [2020-12-02 21:38:50,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 21:38:50,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 21:38:50,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 21:38:50,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 21:38:50,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:50" (1/1) ... [2020-12-02 21:38:50,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:50" (1/1) ... [2020-12-02 21:38:50,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 21:38:50,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 21:38:50,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 21:38:50,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 21:38:50,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:50" (1/1) ... [2020-12-02 21:38:50,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:50" (1/1) ... [2020-12-02 21:38:50,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:50" (1/1) ... [2020-12-02 21:38:50,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:50" (1/1) ... [2020-12-02 21:38:50,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:50" (1/1) ... [2020-12-02 21:38:50,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:50" (1/1) ... [2020-12-02 21:38:50,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:50" (1/1) ... [2020-12-02 21:38:50,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 21:38:50,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 21:38:50,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 21:38:50,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 21:38:50,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-02 21:38:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 21:38:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 21:38:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 21:38:51,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 21:38:51,374 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 21:38:51,375 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-02 21:38:51,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:38:51 BoogieIcfgContainer [2020-12-02 21:38:51,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 21:38:51,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 21:38:51,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 21:38:51,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 21:38:51,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:38:50" (1/3) ... [2020-12-02 21:38:51,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2493dc45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:38:51, skipping insertion in model container [2020-12-02 21:38:51,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:50" (2/3) ... [2020-12-02 21:38:51,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2493dc45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:38:51, skipping insertion in model container [2020-12-02 21:38:51,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:38:51" (3/3) ... [2020-12-02 21:38:51,388 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound100.c [2020-12-02 21:38:51,407 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 21:38:51,412 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-02 21:38:51,426 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-02 21:38:51,464 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 21:38:51,464 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 21:38:51,465 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 21:38:51,465 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 21:38:51,465 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 21:38:51,465 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 21:38:51,465 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 21:38:51,466 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 21:38:51,493 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-02 21:38:51,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:38:51,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:51,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:51,502 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:38:51,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:51,509 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-02 21:38:51,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:51,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873689081] [2020-12-02 21:38:51,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:51,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873689081] [2020-12-02 21:38:51,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:38:51,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 21:38:51,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719549059] [2020-12-02 21:38:51,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 21:38:51,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:51,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 21:38:51,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 21:38:51,871 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-02 21:38:51,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:51,895 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-02 21:38:51,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 21:38:51,897 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 21:38:51,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:51,909 INFO L225 Difference]: With dead ends: 79 [2020-12-02 21:38:51,910 INFO L226 Difference]: Without dead ends: 37 [2020-12-02 21:38:51,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 21:38:51,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-02 21:38:51,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-02 21:38:51,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-02 21:38:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-02 21:38:51,957 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-02 21:38:51,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:51,958 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-02 21:38:51,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 21:38:51,958 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-02 21:38:51,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:38:51,959 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:51,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:51,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 21:38:51,960 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:38:51,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:51,962 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-02 21:38:51,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:51,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277388161] [2020-12-02 21:38:51,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:52,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277388161] [2020-12-02 21:38:52,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:38:52,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 21:38:52,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339575672] [2020-12-02 21:38:52,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 21:38:52,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:52,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 21:38:52,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 21:38:52,067 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-02 21:38:52,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:52,159 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-02 21:38:52,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 21:38:52,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-02 21:38:52,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:52,161 INFO L225 Difference]: With dead ends: 61 [2020-12-02 21:38:52,162 INFO L226 Difference]: Without dead ends: 59 [2020-12-02 21:38:52,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:38:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-02 21:38:52,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-02 21:38:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-02 21:38:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-02 21:38:52,174 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-02 21:38:52,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:52,174 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-02 21:38:52,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 21:38:52,175 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-02 21:38:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 21:38:52,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:52,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:52,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 21:38:52,177 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:38:52,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:52,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-02 21:38:52,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:52,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106720457] [2020-12-02 21:38:52,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:52,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106720457] [2020-12-02 21:38:52,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:38:52,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 21:38:52,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260893753] [2020-12-02 21:38:52,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 21:38:52,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:52,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 21:38:52,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 21:38:52,226 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-02 21:38:52,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:52,248 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-12-02 21:38:52,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 21:38:52,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 21:38:52,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:52,251 INFO L225 Difference]: With dead ends: 56 [2020-12-02 21:38:52,251 INFO L226 Difference]: Without dead ends: 37 [2020-12-02 21:38:52,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 21:38:52,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-02 21:38:52,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-02 21:38:52,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-02 21:38:52,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-02 21:38:52,264 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-02 21:38:52,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:52,265 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-02 21:38:52,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 21:38:52,265 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-02 21:38:52,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 21:38:52,266 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:52,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:52,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 21:38:52,267 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:38:52,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:52,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-02 21:38:52,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:52,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113443482] [2020-12-02 21:38:52,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:52,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113443482] [2020-12-02 21:38:52,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:38:52,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 21:38:52,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007686877] [2020-12-02 21:38:52,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 21:38:52,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:52,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 21:38:52,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 21:38:52,359 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-02 21:38:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:52,442 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-12-02 21:38:52,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 21:38:52,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 21:38:52,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:52,443 INFO L225 Difference]: With dead ends: 56 [2020-12-02 21:38:52,444 INFO L226 Difference]: Without dead ends: 54 [2020-12-02 21:38:52,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:38:52,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-02 21:38:52,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-02 21:38:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-02 21:38:52,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-02 21:38:52,453 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-02 21:38:52,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:52,453 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-02 21:38:52,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 21:38:52,454 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-02 21:38:52,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 21:38:52,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:52,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:52,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 21:38:52,455 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:38:52,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:52,456 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-02 21:38:52,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:52,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548674790] [2020-12-02 21:38:52,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:52,476 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:52,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964629606] [2020-12-02 21:38:52,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:52,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-02 21:38:52,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:52,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:52,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548674790] [2020-12-02 21:38:52,668 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:52,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964629606] [2020-12-02 21:38:52,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:38:52,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-02 21:38:52,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11715441] [2020-12-02 21:38:52,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:38:52,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:52,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:38:52,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:38:52,671 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-02 21:38:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:52,878 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-12-02 21:38:52,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 21:38:52,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-02 21:38:52,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:52,880 INFO L225 Difference]: With dead ends: 81 [2020-12-02 21:38:52,880 INFO L226 Difference]: Without dead ends: 58 [2020-12-02 21:38:52,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-02 21:38:52,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-02 21:38:52,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-12-02 21:38:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-02 21:38:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-02 21:38:52,891 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-12-02 21:38:52,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:52,891 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-02 21:38:52,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:38:52,892 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-02 21:38:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 21:38:52,892 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:52,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:53,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:53,107 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:38:53,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:53,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-02 21:38:53,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:53,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161528104] [2020-12-02 21:38:53,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:53,136 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:53,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401614629] [2020-12-02 21:38:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:53,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-02 21:38:53,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:53,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161528104] [2020-12-02 21:38:53,330 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:53,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401614629] [2020-12-02 21:38:53,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:38:53,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-02 21:38:53,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108519888] [2020-12-02 21:38:53,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 21:38:53,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:53,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 21:38:53,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:38:53,334 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2020-12-02 21:38:53,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:53,587 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-02 21:38:53,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 21:38:53,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-02 21:38:53,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:53,589 INFO L225 Difference]: With dead ends: 53 [2020-12-02 21:38:53,589 INFO L226 Difference]: Without dead ends: 41 [2020-12-02 21:38:53,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-02 21:38:53,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-02 21:38:53,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-02 21:38:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-02 21:38:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-02 21:38:53,597 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2020-12-02 21:38:53,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:53,597 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-02 21:38:53,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 21:38:53,598 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-02 21:38:53,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 21:38:53,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:53,599 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:53,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:53,803 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:38:53,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:53,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2020-12-02 21:38:53,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:53,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976379067] [2020-12-02 21:38:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:53,829 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:53,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182025841] [2020-12-02 21:38:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:53,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 21:38:53,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:53,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976379067] [2020-12-02 21:38:53,947 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:53,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182025841] [2020-12-02 21:38:53,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:53,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-02 21:38:53,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540292374] [2020-12-02 21:38:53,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:38:53,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:53,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:38:53,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:38:53,956 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-12-02 21:38:53,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:53,993 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-02 21:38:53,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:38:53,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-02 21:38:53,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:53,995 INFO L225 Difference]: With dead ends: 62 [2020-12-02 21:38:53,995 INFO L226 Difference]: Without dead ends: 43 [2020-12-02 21:38:53,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:38:53,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-02 21:38:54,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-02 21:38:54,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-02 21:38:54,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-02 21:38:54,004 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-12-02 21:38:54,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:54,004 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-02 21:38:54,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:38:54,005 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-02 21:38:54,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-02 21:38:54,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:54,006 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:54,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:54,219 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:38:54,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:54,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2020-12-02 21:38:54,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:54,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653735524] [2020-12-02 21:38:54,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:54,233 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:54,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925690432] [2020-12-02 21:38:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:54,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-02 21:38:54,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:54,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653735524] [2020-12-02 21:38:54,586 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:54,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925690432] [2020-12-02 21:38:54,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:54,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-02 21:38:54,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798777975] [2020-12-02 21:38:54,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-02 21:38:54,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:54,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-02 21:38:54,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-02 21:38:54,589 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-12-02 21:38:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:55,146 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2020-12-02 21:38:55,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 21:38:55,147 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-02 21:38:55,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:55,148 INFO L225 Difference]: With dead ends: 83 [2020-12-02 21:38:55,148 INFO L226 Difference]: Without dead ends: 71 [2020-12-02 21:38:55,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-02 21:38:55,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-02 21:38:55,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2020-12-02 21:38:55,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-02 21:38:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-12-02 21:38:55,156 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2020-12-02 21:38:55,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:55,157 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-12-02 21:38:55,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-02 21:38:55,157 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-12-02 21:38:55,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-02 21:38:55,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:55,158 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:55,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:55,363 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:38:55,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:55,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2020-12-02 21:38:55,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:55,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611281069] [2020-12-02 21:38:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:55,383 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:55,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621958256] [2020-12-02 21:38:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:55,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-02 21:38:55,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:55,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611281069] [2020-12-02 21:38:55,628 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:55,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621958256] [2020-12-02 21:38:55,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:55,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-02 21:38:55,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997601587] [2020-12-02 21:38:55,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 21:38:55,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:55,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 21:38:55,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:38:55,631 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 7 states. [2020-12-02 21:39:00,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:00,031 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-12-02 21:39:00,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 21:39:00,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-02 21:39:00,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:00,033 INFO L225 Difference]: With dead ends: 74 [2020-12-02 21:39:00,033 INFO L226 Difference]: Without dead ends: 70 [2020-12-02 21:39:00,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-02 21:39:00,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-02 21:39:00,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-12-02 21:39:00,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-02 21:39:00,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-12-02 21:39:00,041 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 24 [2020-12-02 21:39:00,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:00,042 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-12-02 21:39:00,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 21:39:00,042 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-12-02 21:39:00,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-02 21:39:00,043 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:00,043 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:00,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:00,244 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:00,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:00,245 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2020-12-02 21:39:00,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:00,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448861782] [2020-12-02 21:39:00,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:00,262 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:00,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922913179] [2020-12-02 21:39:00,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:00,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-02 21:39:00,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:00,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448861782] [2020-12-02 21:39:00,428 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:00,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922913179] [2020-12-02 21:39:00,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:39:00,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-02 21:39:00,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653283954] [2020-12-02 21:39:00,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:39:00,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:00,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:39:00,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:39:00,430 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 6 states. [2020-12-02 21:39:00,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:00,459 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-12-02 21:39:00,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:39:00,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-02 21:39:00,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:00,460 INFO L225 Difference]: With dead ends: 71 [2020-12-02 21:39:00,461 INFO L226 Difference]: Without dead ends: 65 [2020-12-02 21:39:00,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:39:00,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-02 21:39:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-12-02 21:39:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-02 21:39:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2020-12-02 21:39:00,469 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 27 [2020-12-02 21:39:00,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:00,470 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2020-12-02 21:39:00,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:39:00,470 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2020-12-02 21:39:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-02 21:39:00,471 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:00,471 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:00,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:00,685 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:00,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:00,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1875627766, now seen corresponding path program 1 times [2020-12-02 21:39:00,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:00,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099587249] [2020-12-02 21:39:00,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:00,701 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:00,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576758114] [2020-12-02 21:39:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:00,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-02 21:39:00,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:00,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099587249] [2020-12-02 21:39:00,845 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:00,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576758114] [2020-12-02 21:39:00,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:39:00,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-02 21:39:00,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220176967] [2020-12-02 21:39:00,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:39:00,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:00,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:39:00,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:39:00,848 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 6 states. [2020-12-02 21:39:00,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:00,910 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2020-12-02 21:39:00,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 21:39:00,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-02 21:39:00,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:00,917 INFO L225 Difference]: With dead ends: 94 [2020-12-02 21:39:00,917 INFO L226 Difference]: Without dead ends: 66 [2020-12-02 21:39:00,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-02 21:39:00,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-02 21:39:00,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-02 21:39:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-02 21:39:00,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2020-12-02 21:39:00,946 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 28 [2020-12-02 21:39:00,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:00,946 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2020-12-02 21:39:00,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:39:00,946 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2020-12-02 21:39:00,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-02 21:39:00,949 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:00,950 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:01,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:01,151 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:01,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:01,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1711245194, now seen corresponding path program 2 times [2020-12-02 21:39:01,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:01,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184369640] [2020-12-02 21:39:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:01,176 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:01,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344370873] [2020-12-02 21:39:01,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:01,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-02 21:39:01,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:39:01,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-02 21:39:01,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:01,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184369640] [2020-12-02 21:39:01,957 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:01,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344370873] [2020-12-02 21:39:01,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:39:01,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-02 21:39:01,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375321348] [2020-12-02 21:39:01,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-02 21:39:01,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:01,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-02 21:39:01,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-02 21:39:01,959 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand 11 states. [2020-12-02 21:39:03,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:03,202 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-12-02 21:39:03,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-02 21:39:03,204 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-12-02 21:39:03,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:03,205 INFO L225 Difference]: With dead ends: 103 [2020-12-02 21:39:03,205 INFO L226 Difference]: Without dead ends: 93 [2020-12-02 21:39:03,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-12-02 21:39:03,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-02 21:39:03,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2020-12-02 21:39:03,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-02 21:39:03,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2020-12-02 21:39:03,223 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 28 [2020-12-02 21:39:03,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:03,226 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2020-12-02 21:39:03,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-02 21:39:03,226 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2020-12-02 21:39:03,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-02 21:39:03,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:03,227 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] [2020-12-02 21:39:03,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-02 21:39:03,435 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:03,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:03,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1339843922, now seen corresponding path program 1 times [2020-12-02 21:39:03,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:03,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504009671] [2020-12-02 21:39:03,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:03,448 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:03,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059921055] [2020-12-02 21:39:03,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:07,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-02 21:39:07,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:08,187 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-12-02 21:39:08,274 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:08,328 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-02 21:39:08,349 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-02 21:39:08,554 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-02 21:39:08,817 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-02 21:39:09,324 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:10,767 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:12,433 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:14,088 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:15,953 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:17,023 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:18,049 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:18,926 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:20,193 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:21,378 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:22,357 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:23,473 INFO L757 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:24,325 INFO L757 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:27,678 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:31,944 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:36,675 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:43,450 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:55,119 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:40:13,635 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:40:16,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504009671] [2020-12-02 21:40:16,461 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:40:16,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059921055] [2020-12-02 21:40:16,462 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-02 21:40:16,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:16,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-02 21:40:16,462 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-02 21:40:16,462 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 21:40:16,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:40:16,689 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-02 21:40:16,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 09:40:16 BoogieIcfgContainer [2020-12-02 21:40:16,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 21:40:16,691 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 21:40:16,691 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 21:40:16,691 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 21:40:16,692 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:38:51" (3/4) ... [2020-12-02 21:40:16,695 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 21:40:16,696 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 21:40:16,701 INFO L168 Benchmark]: Toolchain (without parser) took 86202.66 ms. Allocated memory was 50.3 MB in the beginning and 226.5 MB in the end (delta: 176.2 MB). Free memory was 27.7 MB in the beginning and 115.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 90.7 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:16,703 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 37.7 MB. Free memory was 18.2 MB in the beginning and 18.1 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:40:16,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.60 ms. Allocated memory is still 50.3 MB. Free memory was 27.5 MB in the beginning and 30.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:16,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.30 ms. Allocated memory is still 50.3 MB. Free memory was 30.8 MB in the beginning and 29.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:16,707 INFO L168 Benchmark]: Boogie Preprocessor took 31.50 ms. Allocated memory is still 50.3 MB. Free memory was 29.2 MB in the beginning and 28.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:40:16,708 INFO L168 Benchmark]: RCFGBuilder took 488.17 ms. Allocated memory is still 50.3 MB. Free memory was 27.8 MB in the beginning and 24.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:16,709 INFO L168 Benchmark]: TraceAbstraction took 85311.23 ms. Allocated memory was 50.3 MB in the beginning and 226.5 MB in the end (delta: 176.2 MB). Free memory was 23.7 MB in the beginning and 116.8 MB in the end (delta: -93.1 MB). Peak memory consumption was 127.5 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:16,713 INFO L168 Benchmark]: Witness Printer took 4.87 ms. Allocated memory is still 226.5 MB. Free memory was 116.8 MB in the beginning and 115.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:16,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 37.7 MB. Free memory was 18.2 MB in the beginning and 18.1 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.60 ms. Allocated memory is still 50.3 MB. Free memory was 27.5 MB in the beginning and 30.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.30 ms. Allocated memory is still 50.3 MB. Free memory was 30.8 MB in the beginning and 29.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.50 ms. Allocated memory is still 50.3 MB. Free memory was 29.2 MB in the beginning and 28.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 488.17 ms. Allocated memory is still 50.3 MB. Free memory was 27.8 MB in the beginning and 24.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 85311.23 ms. Allocated memory was 50.3 MB in the beginning and 226.5 MB in the end (delta: 176.2 MB). Free memory was 23.7 MB in the beginning and 116.8 MB in the end (delta: -93.1 MB). Peak memory consumption was 127.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.87 ms. Allocated memory is still 226.5 MB. Free memory was 116.8 MB in the beginning and 115.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] int counter = 0; [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 [L35] EXPR counter++ [L35] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND TRUE !(r >= d) [L45] EXPR counter++ [L45] COND TRUE counter++<100 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<100 [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 85.2s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 394 SDtfs, 783 SDslu, 796 SDs, 0 SdLazy, 631 SolverSat, 126 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=12, 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, 12 MinimizatonAttempts, 94 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 30603 SizeOfPredicates, 44 NumberOfNonLiveVariables, 809 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 0/59 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-3e5ce66 [2020-12-02 21:40:19,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 21:40:19,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 21:40:19,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 21:40:19,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 21:40:19,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 21:40:19,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 21:40:19,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 21:40:19,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 21:40:19,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 21:40:19,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 21:40:19,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 21:40:19,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 21:40:19,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 21:40:19,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 21:40:19,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 21:40:19,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 21:40:19,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 21:40:19,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 21:40:19,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 21:40:19,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 21:40:19,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 21:40:19,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 21:40:19,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 21:40:19,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 21:40:19,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 21:40:19,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 21:40:19,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 21:40:19,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 21:40:19,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 21:40:19,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 21:40:19,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 21:40:19,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 21:40:19,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 21:40:19,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 21:40:19,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 21:40:19,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 21:40:19,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 21:40:19,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 21:40:19,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 21:40:19,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 21:40:19,329 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 21:40:19,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 21:40:19,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 21:40:19,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 21:40:19,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 21:40:19,358 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 21:40:19,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 21:40:19,358 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 21:40:19,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 21:40:19,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 21:40:19,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 21:40:19,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 21:40:19,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 21:40:19,360 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 21:40:19,360 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 21:40:19,360 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 21:40:19,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 21:40:19,361 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 21:40:19,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 21:40:19,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 21:40:19,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 21:40:19,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 21:40:19,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 21:40:19,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 21:40:19,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 21:40:19,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 21:40:19,363 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 21:40:19,363 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-02 21:40:19,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 21:40:19,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 21:40:19,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 21:40:19,364 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb4bb282415ebfcdf641882420f9b5b96567c902 [2020-12-02 21:40:19,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 21:40:19,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 21:40:19,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 21:40:19,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 21:40:19,854 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 21:40:19,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound100.c [2020-12-02 21:40:19,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509873808/9b65e8c971ea46dcbaa25beab1552446/FLAGfd9b499be [2020-12-02 21:40:20,573 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 21:40:20,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound100.c [2020-12-02 21:40:20,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509873808/9b65e8c971ea46dcbaa25beab1552446/FLAGfd9b499be [2020-12-02 21:40:20,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509873808/9b65e8c971ea46dcbaa25beab1552446 [2020-12-02 21:40:20,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 21:40:20,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 21:40:20,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 21:40:20,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 21:40:20,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 21:40:20,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:40:20" (1/1) ... [2020-12-02 21:40:20,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc6e9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:20, skipping insertion in model container [2020-12-02 21:40:20,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:40:20" (1/1) ... [2020-12-02 21:40:20,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 21:40:20,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 21:40:21,140 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound100.c[537,550] [2020-12-02 21:40:21,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:40:21,176 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 21:40:21,191 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound100.c[537,550] [2020-12-02 21:40:21,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:40:21,217 INFO L208 MainTranslator]: Completed translation [2020-12-02 21:40:21,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:21 WrapperNode [2020-12-02 21:40:21,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 21:40:21,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 21:40:21,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 21:40:21,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 21:40:21,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:21" (1/1) ... [2020-12-02 21:40:21,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:21" (1/1) ... [2020-12-02 21:40:21,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 21:40:21,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 21:40:21,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 21:40:21,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 21:40:21,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:21" (1/1) ... [2020-12-02 21:40:21,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:21" (1/1) ... [2020-12-02 21:40:21,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:21" (1/1) ... [2020-12-02 21:40:21,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:21" (1/1) ... [2020-12-02 21:40:21,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:21" (1/1) ... [2020-12-02 21:40:21,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:21" (1/1) ... [2020-12-02 21:40:21,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:21" (1/1) ... [2020-12-02 21:40:21,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 21:40:21,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 21:40:21,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 21:40:21,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 21:40:21,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-02 21:40:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 21:40:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 21:40:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 21:40:21,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 21:40:21,758 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 21:40:21,759 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-02 21:40:21,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:40:21 BoogieIcfgContainer [2020-12-02 21:40:21,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 21:40:21,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 21:40:21,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 21:40:21,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 21:40:21,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:40:20" (1/3) ... [2020-12-02 21:40:21,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a627ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:40:21, skipping insertion in model container [2020-12-02 21:40:21,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:21" (2/3) ... [2020-12-02 21:40:21,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a627ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:40:21, skipping insertion in model container [2020-12-02 21:40:21,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:40:21" (3/3) ... [2020-12-02 21:40:21,771 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound100.c [2020-12-02 21:40:21,788 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 21:40:21,792 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-02 21:40:21,814 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-02 21:40:21,841 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 21:40:21,842 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 21:40:21,842 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 21:40:21,842 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 21:40:21,842 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 21:40:21,843 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 21:40:21,843 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 21:40:21,843 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 21:40:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-02 21:40:21,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:40:21,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:21,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:21,869 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:40:21,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:21,876 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-02 21:40:21,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:21,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091787143] [2020-12-02 21:40:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-02 21:40:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:21,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 21:40:21,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:22,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:22,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:22,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091787143] [2020-12-02 21:40:22,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:22,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 21:40:22,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570378002] [2020-12-02 21:40:22,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 21:40:22,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:22,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 21:40:22,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 21:40:22,060 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-02 21:40:22,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:22,083 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-02 21:40:22,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 21:40:22,085 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 21:40:22,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:22,095 INFO L225 Difference]: With dead ends: 79 [2020-12-02 21:40:22,096 INFO L226 Difference]: Without dead ends: 37 [2020-12-02 21:40:22,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 21:40:22,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-02 21:40:22,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-02 21:40:22,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-02 21:40:22,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-02 21:40:22,141 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-02 21:40:22,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:22,141 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-02 21:40:22,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 21:40:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-02 21:40:22,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:40:22,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:22,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:22,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 21:40:22,362 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:40:22,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:22,365 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-02 21:40:22,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:22,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755137600] [2020-12-02 21:40:22,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-02 21:40:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:22,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 21:40:22,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:22,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:22,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:22,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755137600] [2020-12-02 21:40:22,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:22,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-02 21:40:22,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470411197] [2020-12-02 21:40:22,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:40:22,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:22,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:40:22,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:40:22,508 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-12-02 21:40:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:22,750 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-02 21:40:22,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:40:22,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-02 21:40:22,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:22,753 INFO L225 Difference]: With dead ends: 61 [2020-12-02 21:40:22,755 INFO L226 Difference]: Without dead ends: 59 [2020-12-02 21:40:22,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:40:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-02 21:40:22,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-02 21:40:22,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-02 21:40:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-02 21:40:22,780 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-02 21:40:22,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:22,781 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-02 21:40:22,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:40:22,781 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-02 21:40:22,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 21:40:22,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:22,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:22,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 21:40:22,986 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:40:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:22,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-02 21:40:22,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:22,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338592127] [2020-12-02 21:40:22,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-02 21:40:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:23,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 21:40:23,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:23,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:23,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338592127] [2020-12-02 21:40:23,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:23,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 21:40:23,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112858490] [2020-12-02 21:40:23,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:40:23,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:23,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:40:23,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:40:23,138 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-02 21:40:23,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:23,217 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2020-12-02 21:40:23,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:40:23,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-02 21:40:23,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:23,220 INFO L225 Difference]: With dead ends: 69 [2020-12-02 21:40:23,221 INFO L226 Difference]: Without dead ends: 50 [2020-12-02 21:40:23,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:40:23,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-02 21:40:23,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-12-02 21:40:23,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-02 21:40:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-12-02 21:40:23,246 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 10 [2020-12-02 21:40:23,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:23,246 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-12-02 21:40:23,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:40:23,247 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-12-02 21:40:23,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 21:40:23,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:23,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:23,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 21:40:23,466 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:40:23,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:23,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-02 21:40:23,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:23,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598890704] [2020-12-02 21:40:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-02 21:40:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:23,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 21:40:23,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:23,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:23,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598890704] [2020-12-02 21:40:23,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:23,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-02 21:40:23,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009093888] [2020-12-02 21:40:23,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:40:23,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:23,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:40:23,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:40:23,582 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-12-02 21:40:23,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:23,806 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-12-02 21:40:23,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:40:23,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 21:40:23,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:23,808 INFO L225 Difference]: With dead ends: 64 [2020-12-02 21:40:23,809 INFO L226 Difference]: Without dead ends: 62 [2020-12-02 21:40:23,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:40:23,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-02 21:40:23,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 43. [2020-12-02 21:40:23,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-02 21:40:23,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-12-02 21:40:23,820 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 10 [2020-12-02 21:40:23,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:23,820 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-12-02 21:40:23,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:40:23,821 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-12-02 21:40:23,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 21:40:23,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:23,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:24,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-02 21:40:24,036 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:40:24,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:24,038 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-02 21:40:24,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:24,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502759014] [2020-12-02 21:40:24,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-02 21:40:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:24,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 21:40:24,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:24,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:24,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502759014] [2020-12-02 21:40:24,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:24,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-02 21:40:24,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768863081] [2020-12-02 21:40:24,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:40:24,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:24,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:40:24,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:40:24,260 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 6 states. [2020-12-02 21:40:27,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:27,071 INFO L93 Difference]: Finished difference Result 106 states and 123 transitions. [2020-12-02 21:40:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-02 21:40:27,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-02 21:40:27,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:27,075 INFO L225 Difference]: With dead ends: 106 [2020-12-02 21:40:27,075 INFO L226 Difference]: Without dead ends: 83 [2020-12-02 21:40:27,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-02 21:40:27,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-02 21:40:27,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 63. [2020-12-02 21:40:27,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-02 21:40:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2020-12-02 21:40:27,102 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 12 [2020-12-02 21:40:27,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:27,102 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2020-12-02 21:40:27,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:40:27,102 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2020-12-02 21:40:27,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 21:40:27,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:27,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:27,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-02 21:40:27,325 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:40:27,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:27,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-02 21:40:27,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:27,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160468148] [2020-12-02 21:40:27,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-02 21:40:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:27,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 21:40:27,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:27,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:27,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:27,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160468148] [2020-12-02 21:40:27,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:27,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 2] imperfect sequences [] total 5 [2020-12-02 21:40:27,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953542208] [2020-12-02 21:40:27,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:40:27,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:27,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:40:27,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:40:27,496 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand 5 states. [2020-12-02 21:40:27,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:27,498 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-12-02 21:40:27,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 21:40:27,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-02 21:40:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:27,499 INFO L225 Difference]: With dead ends: 63 [2020-12-02 21:40:27,499 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 21:40:27,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:40:27,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 21:40:27,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 21:40:27,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 21:40:27,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 21:40:27,501 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-02 21:40:27,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:27,502 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 21:40:27,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:40:27,502 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 21:40:27,502 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 21:40:27,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-02 21:40:27,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-02 21:40:27,786 INFO L258 CegarLoopResult]: At program point L35-3(lines 35 43) the Hoare annotation is: false [2020-12-02 21:40:27,787 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:27,787 INFO L262 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-12-02 21:40:27,787 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:27,787 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-02 21:40:27,787 INFO L265 CegarLoopResult]: At program point L61(lines 23 62) the Hoare annotation is: true [2020-12-02 21:40:27,788 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-02 21:40:27,788 INFO L262 CegarLoopResult]: For program point L53(lines 53 56) no Hoare annotation was computed. [2020-12-02 21:40:27,788 INFO L262 CegarLoopResult]: For program point L53-2(lines 23 62) no Hoare annotation was computed. [2020-12-02 21:40:27,788 INFO L262 CegarLoopResult]: For program point L45(lines 45 57) no Hoare annotation was computed. [2020-12-02 21:40:27,788 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-02 21:40:27,788 INFO L262 CegarLoopResult]: For program point L45-2(lines 45 57) no Hoare annotation was computed. [2020-12-02 21:40:27,789 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:27,789 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:27,789 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:27,789 INFO L262 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:27,789 INFO L258 CegarLoopResult]: At program point L15-2(lines 14 20) the Hoare annotation is: false [2020-12-02 21:40:27,790 INFO L262 CegarLoopResult]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:27,790 INFO L258 CegarLoopResult]: At program point L15-5(lines 14 20) the Hoare annotation is: false [2020-12-02 21:40:27,790 INFO L262 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:27,790 INFO L258 CegarLoopResult]: At program point L15-8(line 39) the Hoare annotation is: false [2020-12-02 21:40:27,790 INFO L262 CegarLoopResult]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:27,791 INFO L258 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: false [2020-12-02 21:40:27,791 INFO L262 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:27,791 INFO L258 CegarLoopResult]: At program point L15-14(line 49) the Hoare annotation is: false [2020-12-02 21:40:27,791 INFO L262 CegarLoopResult]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:27,791 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-02 21:40:27,792 INFO L258 CegarLoopResult]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) (= (_ bv1 32) ULTIMATE.start_main_~p~0)) [2020-12-02 21:40:27,792 INFO L262 CegarLoopResult]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:27,792 INFO L265 CegarLoopResult]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2020-12-02 21:40:27,799 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:27,800 INFO L262 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:27,800 INFO L262 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:27,800 INFO L262 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:27,801 INFO L262 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:27,801 INFO L262 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:27,802 INFO L262 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:27,802 INFO L262 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:27,802 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-02 21:40:27,802 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:27,802 INFO L262 CegarLoopResult]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2020-12-02 21:40:27,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 09:40:27 BoogieIcfgContainer [2020-12-02 21:40:27,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 21:40:27,835 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 21:40:27,835 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 21:40:27,836 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 21:40:27,836 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:40:21" (3/4) ... [2020-12-02 21:40:27,841 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 21:40:27,857 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-02 21:40:27,858 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 21:40:27,858 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 21:40:27,859 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 21:40:27,951 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 21:40:27,952 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 21:40:27,954 INFO L168 Benchmark]: Toolchain (without parser) took 7049.33 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.6 MB in the beginning and 38.8 MB in the end (delta: -11.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:27,955 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 37.7 MB. Free memory was 23.9 MB in the beginning and 23.9 MB in the end (delta: 31.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:40:27,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.96 ms. Allocated memory is still 50.3 MB. Free memory was 27.4 MB in the beginning and 30.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:27,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.44 ms. Allocated memory is still 50.3 MB. Free memory was 30.3 MB in the beginning and 28.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:27,959 INFO L168 Benchmark]: Boogie Preprocessor took 30.60 ms. Allocated memory is still 50.3 MB. Free memory was 28.7 MB in the beginning and 27.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:27,960 INFO L168 Benchmark]: RCFGBuilder took 469.48 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 23.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:27,961 INFO L168 Benchmark]: TraceAbstraction took 6071.03 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 42.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:27,962 INFO L168 Benchmark]: Witness Printer took 116.46 ms. Allocated memory is still 60.8 MB. Free memory was 42.0 MB in the beginning and 38.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:27,964 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 37.7 MB. Free memory was 23.9 MB in the beginning and 23.9 MB in the end (delta: 31.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.96 ms. Allocated memory is still 50.3 MB. Free memory was 27.4 MB in the beginning and 30.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.44 ms. Allocated memory is still 50.3 MB. Free memory was 30.3 MB in the beginning and 28.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.60 ms. Allocated memory is still 50.3 MB. Free memory was 28.7 MB in the beginning and 27.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 469.48 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 23.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6071.03 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 42.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Witness Printer took 116.46 ms. Allocated memory is still 60.8 MB. Free memory was 42.0 MB in the beginning and 38.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (!(cond == 0bv32) && d == B) && 1bv32 == p - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 178 SDtfs, 176 SDslu, 231 SDs, 0 SdLazy, 147 SolverSat, 66 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred 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, 6 MinimizatonAttempts, 68 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 19 HoareAnnotationTreeSize, 9 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 3446 SizeOfPredicates, 17 NumberOfNonLiveVariables, 253 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 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...