./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc393f6c4862d8369d85fc8f5aceb831c4046350 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc393f6c4862d8369d85fc8f5aceb831c4046350 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:56:44,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:56:44,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:56:44,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:56:44,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:56:44,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:56:44,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:56:44,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:56:44,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:56:44,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:56:44,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:56:44,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:56:44,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:56:44,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:56:44,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:56:44,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:56:44,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:56:44,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:56:44,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:56:44,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:56:44,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:56:44,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:56:44,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:56:44,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:56:44,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:56:44,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:56:44,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:56:44,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:56:44,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:56:44,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:56:44,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:56:44,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:56:44,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:56:44,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:56:44,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:56:44,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:56:44,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:56:44,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:56:44,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:56:44,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:56:44,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:56:44,796 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:56:44,818 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:56:44,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:56:44,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:56:44,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:56:44,829 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:56:44,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:56:44,830 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:56:44,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:56:44,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:56:44,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:56:44,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:56:44,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:56:44,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:56:44,831 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:56:44,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:56:44,832 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:56:44,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:56:44,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:56:44,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:56:44,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:56:44,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:56:44,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:56:44,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:56:44,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:56:44,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:56:44,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:56:44,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:56:44,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:56:44,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer 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(__VERIFIER_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 -> dc393f6c4862d8369d85fc8f5aceb831c4046350 [2019-11-25 08:56:44,993 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:56:45,003 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:56:45,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:56:45,007 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:56:45,008 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:56:45,008 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2019-11-25 08:56:45,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/data/a23e13b2a/d6a8b752da314995a21cba8eae613b81/FLAG5c85d15e0 [2019-11-25 08:56:45,404 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:56:45,405 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/sv-benchmarks/c/bitvector/num_conversion_1.c [2019-11-25 08:56:45,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/data/a23e13b2a/d6a8b752da314995a21cba8eae613b81/FLAG5c85d15e0 [2019-11-25 08:56:45,806 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/data/a23e13b2a/d6a8b752da314995a21cba8eae613b81 [2019-11-25 08:56:45,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:56:45,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:56:45,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:45,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:56:45,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:56:45,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:45" (1/1) ... [2019-11-25 08:56:45,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c8e37af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:45, skipping insertion in model container [2019-11-25 08:56:45,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:45" (1/1) ... [2019-11-25 08:56:45,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:56:45,837 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:56:45,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:45,967 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:56:46,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:46,068 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:56:46,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:46 WrapperNode [2019-11-25 08:56:46,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:46,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:46,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:56:46,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:56:46,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:46" (1/1) ... [2019-11-25 08:56:46,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:46" (1/1) ... [2019-11-25 08:56:46,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:46,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:56:46,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:56:46,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:56:46,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:46" (1/1) ... [2019-11-25 08:56:46,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:46" (1/1) ... [2019-11-25 08:56:46,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:46" (1/1) ... [2019-11-25 08:56:46,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:46" (1/1) ... [2019-11-25 08:56:46,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:46" (1/1) ... [2019-11-25 08:56:46,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:46" (1/1) ... [2019-11-25 08:56:46,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:46" (1/1) ... [2019-11-25 08:56:46,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:56:46,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:56:46,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:56:46,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:56:46,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/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 [2019-11-25 08:56:46,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:56:46,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:56:46,361 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:56:46,362 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:56:46,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:46 BoogieIcfgContainer [2019-11-25 08:56:46,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:56:46,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:56:46,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:56:46,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:56:46,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:56:45" (1/3) ... [2019-11-25 08:56:46,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520535dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:46, skipping insertion in model container [2019-11-25 08:56:46,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:46" (2/3) ... [2019-11-25 08:56:46,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520535dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:46, skipping insertion in model container [2019-11-25 08:56:46,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:46" (3/3) ... [2019-11-25 08:56:46,369 INFO L109 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2019-11-25 08:56:46,380 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:56:46,386 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:56:46,396 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:56:46,423 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:56:46,423 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:56:46,423 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:56:46,423 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:56:46,423 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:56:46,424 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:56:46,424 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:56:46,424 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:56:46,438 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-25 08:56:46,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-25 08:56:46,444 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:46,445 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-25 08:56:46,446 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:46,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:46,452 INFO L82 PathProgramCache]: Analyzing trace with hash 30139652, now seen corresponding path program 1 times [2019-11-25 08:56:46,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:46,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639617361] [2019-11-25 08:56:46,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:46,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639617361] [2019-11-25 08:56:46,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:46,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:56:46,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169769175] [2019-11-25 08:56:46,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:56:46,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:46,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:56:46,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:56:46,556 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-11-25 08:56:46,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:46,566 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-25 08:56:46,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:56:46,567 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-25 08:56:46,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:46,574 INFO L225 Difference]: With dead ends: 20 [2019-11-25 08:56:46,574 INFO L226 Difference]: Without dead ends: 8 [2019-11-25 08:56:46,576 INFO L630 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 [2019-11-25 08:56:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-25 08:56:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-25 08:56:46,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:56:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-25 08:56:46,601 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-11-25 08:56:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:46,602 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-25 08:56:46,602 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:56:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-25 08:56:46,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-25 08:56:46,602 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:46,603 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-25 08:56:46,603 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:46,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:46,603 INFO L82 PathProgramCache]: Analyzing trace with hash 29811951, now seen corresponding path program 1 times [2019-11-25 08:56:46,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:46,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488256467] [2019-11-25 08:56:46,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:46,694 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488256467] [2019-11-25 08:56:46,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:46,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:56:46,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544385224] [2019-11-25 08:56:46,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:56:46,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:46,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:56:46,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:56:46,697 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 3 states. [2019-11-25 08:56:46,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:46,713 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-25 08:56:46,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:56:46,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-25 08:56:46,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:46,715 INFO L225 Difference]: With dead ends: 15 [2019-11-25 08:56:46,715 INFO L226 Difference]: Without dead ends: 11 [2019-11-25 08:56:46,716 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:56:46,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-25 08:56:46,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2019-11-25 08:56:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:56:46,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-11-25 08:56:46,718 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2019-11-25 08:56:46,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:46,719 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-25 08:56:46,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:56:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-11-25 08:56:46,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:56:46,719 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:46,720 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:46,720 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:46,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:46,720 INFO L82 PathProgramCache]: Analyzing trace with hash 608596189, now seen corresponding path program 1 times [2019-11-25 08:56:46,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:46,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055523743] [2019-11-25 08:56:46,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:46,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055523743] [2019-11-25 08:56:46,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542282937] [2019-11-25 08:56:46,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/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 [2019-11-25 08:56:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:46,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:56:46,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:46,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:46,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:46,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2019-11-25 08:56:46,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486491598] [2019-11-25 08:56:46,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:56:46,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:46,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:56:46,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:56:46,892 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 5 states. [2019-11-25 08:56:46,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:46,932 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-25 08:56:46,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:56:46,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-25 08:56:46,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:46,933 INFO L225 Difference]: With dead ends: 18 [2019-11-25 08:56:46,933 INFO L226 Difference]: Without dead ends: 14 [2019-11-25 08:56:46,934 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:56:46,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-25 08:56:46,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-11-25 08:56:46,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:56:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-25 08:56:46,937 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2019-11-25 08:56:46,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:46,937 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-25 08:56:46,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:56:46,937 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-25 08:56:46,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:56:46,938 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:46,938 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2019-11-25 08:56:47,144 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:56:47,145 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:47,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:47,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1123862993, now seen corresponding path program 2 times [2019-11-25 08:56:47,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:47,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870320847] [2019-11-25 08:56:47,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:47,250 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870320847] [2019-11-25 08:56:47,250 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372209682] [2019-11-25 08:56:47,250 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/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 [2019-11-25 08:56:47,281 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:56:47,281 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:56:47,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:56:47,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:47,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:47,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-11-25 08:56:47,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925190081] [2019-11-25 08:56:47,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:56:47,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:47,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:56:47,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:56:47,337 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 7 states. [2019-11-25 08:56:47,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:47,384 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2019-11-25 08:56:47,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:56:47,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-11-25 08:56:47,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:47,385 INFO L225 Difference]: With dead ends: 21 [2019-11-25 08:56:47,385 INFO L226 Difference]: Without dead ends: 17 [2019-11-25 08:56:47,386 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:56:47,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-25 08:56:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2019-11-25 08:56:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-25 08:56:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2019-11-25 08:56:47,390 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2019-11-25 08:56:47,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:47,390 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-11-25 08:56:47,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:56:47,391 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2019-11-25 08:56:47,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:56:47,391 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:47,391 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1] [2019-11-25 08:56:47,592 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:56:47,592 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:47,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:47,592 INFO L82 PathProgramCache]: Analyzing trace with hash -193357923, now seen corresponding path program 3 times [2019-11-25 08:56:47,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:47,593 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193622836] [2019-11-25 08:56:47,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:47,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193622836] [2019-11-25 08:56:47,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847680548] [2019-11-25 08:56:47,704 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/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 [2019-11-25 08:56:47,736 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-25 08:56:47,736 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:56:47,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:56:47,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:47,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:47,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-25 08:56:47,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906016886] [2019-11-25 08:56:47,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:56:47,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:47,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:56:47,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:56:47,814 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand 9 states. [2019-11-25 08:56:47,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:47,897 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2019-11-25 08:56:47,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:56:47,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2019-11-25 08:56:47,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:47,900 INFO L225 Difference]: With dead ends: 24 [2019-11-25 08:56:47,900 INFO L226 Difference]: Without dead ends: 20 [2019-11-25 08:56:47,901 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:56:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-25 08:56:47,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-25 08:56:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:56:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-25 08:56:47,905 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 14 [2019-11-25 08:56:47,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:47,905 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-25 08:56:47,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:56:47,905 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-25 08:56:47,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-25 08:56:47,907 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:47,908 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1] [2019-11-25 08:56:48,111 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:56:48,111 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:48,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:48,111 INFO L82 PathProgramCache]: Analyzing trace with hash 764254063, now seen corresponding path program 4 times [2019-11-25 08:56:48,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:48,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573858986] [2019-11-25 08:56:48,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:48,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573858986] [2019-11-25 08:56:48,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840454009] [2019-11-25 08:56:48,240 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/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 [2019-11-25 08:56:48,271 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:56:48,272 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:56:48,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:56:48,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:48,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:48,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-25 08:56:48,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110464933] [2019-11-25 08:56:48,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-25 08:56:48,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:48,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:56:48,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:56:48,376 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 11 states. [2019-11-25 08:56:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:48,486 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-11-25 08:56:48,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:56:48,487 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2019-11-25 08:56:48,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:48,488 INFO L225 Difference]: With dead ends: 27 [2019-11-25 08:56:48,488 INFO L226 Difference]: Without dead ends: 23 [2019-11-25 08:56:48,488 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:56:48,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-25 08:56:48,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-11-25 08:56:48,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-25 08:56:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2019-11-25 08:56:48,493 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 17 [2019-11-25 08:56:48,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:48,494 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2019-11-25 08:56:48,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-25 08:56:48,494 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2019-11-25 08:56:48,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-25 08:56:48,494 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:48,495 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1] [2019-11-25 08:56:48,695 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:56:48,696 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:48,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:48,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1810148957, now seen corresponding path program 5 times [2019-11-25 08:56:48,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:48,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520890978] [2019-11-25 08:56:48,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:48,863 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:48,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520890978] [2019-11-25 08:56:48,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615979764] [2019-11-25 08:56:48,864 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/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 [2019-11-25 08:56:48,904 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-25 08:56:48,904 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:56:48,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-25 08:56:48,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:49,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:49,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-25 08:56:49,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871915831] [2019-11-25 08:56:49,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-25 08:56:49,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:49,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-25 08:56:49,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:56:49,046 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand 13 states. [2019-11-25 08:56:49,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:49,174 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2019-11-25 08:56:49,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:56:49,176 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2019-11-25 08:56:49,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:49,177 INFO L225 Difference]: With dead ends: 30 [2019-11-25 08:56:49,177 INFO L226 Difference]: Without dead ends: 26 [2019-11-25 08:56:49,178 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:56:49,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-25 08:56:49,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-11-25 08:56:49,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-25 08:56:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2019-11-25 08:56:49,183 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 20 [2019-11-25 08:56:49,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:49,184 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-11-25 08:56:49,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-25 08:56:49,184 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2019-11-25 08:56:49,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-25 08:56:49,185 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:49,185 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1] [2019-11-25 08:56:49,385 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:56:49,386 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:49,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:49,386 INFO L82 PathProgramCache]: Analyzing trace with hash 77203631, now seen corresponding path program 6 times [2019-11-25 08:56:49,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:49,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307559625] [2019-11-25 08:56:49,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:49,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307559625] [2019-11-25 08:56:49,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963268126] [2019-11-25 08:56:49,562 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/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 [2019-11-25 08:56:49,608 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-25 08:56:49,608 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:56:49,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-25 08:56:49,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:49,913 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:49,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:49,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-11-25 08:56:49,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457887017] [2019-11-25 08:56:49,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-25 08:56:49,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:49,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-25 08:56:49,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-11-25 08:56:49,915 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand 15 states. [2019-11-25 08:56:50,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:50,078 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2019-11-25 08:56:50,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:56:50,079 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 23 [2019-11-25 08:56:50,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:50,080 INFO L225 Difference]: With dead ends: 33 [2019-11-25 08:56:50,080 INFO L226 Difference]: Without dead ends: 29 [2019-11-25 08:56:50,080 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-11-25 08:56:50,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-25 08:56:50,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-11-25 08:56:50,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-25 08:56:50,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2019-11-25 08:56:50,086 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 23 [2019-11-25 08:56:50,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:50,086 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2019-11-25 08:56:50,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-25 08:56:50,086 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2019-11-25 08:56:50,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-25 08:56:50,087 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:50,087 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1] [2019-11-25 08:56:50,290 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:56:50,290 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:50,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:50,291 INFO L82 PathProgramCache]: Analyzing trace with hash -590105315, now seen corresponding path program 7 times [2019-11-25 08:56:50,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:50,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238621873] [2019-11-25 08:56:50,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:50,410 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:50,410 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238621873] [2019-11-25 08:56:50,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201977392] [2019-11-25 08:56:50,411 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/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 [2019-11-25 08:56:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:50,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-25 08:56:50,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:50,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:50,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-25 08:56:50,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386041740] [2019-11-25 08:56:50,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-25 08:56:50,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:50,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-25 08:56:50,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:56:50,705 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 17 states. [2019-11-25 08:56:50,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:50,857 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-11-25 08:56:50,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-25 08:56:50,858 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 26 [2019-11-25 08:56:50,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:50,859 INFO L225 Difference]: With dead ends: 36 [2019-11-25 08:56:50,859 INFO L226 Difference]: Without dead ends: 32 [2019-11-25 08:56:50,859 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:56:50,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-25 08:56:50,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-11-25 08:56:50,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-25 08:56:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2019-11-25 08:56:50,864 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 26 [2019-11-25 08:56:50,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:50,864 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2019-11-25 08:56:50,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-25 08:56:50,864 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2019-11-25 08:56:50,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-25 08:56:50,865 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:50,865 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1] [2019-11-25 08:56:51,066 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:56:51,066 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:51,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:51,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1012697583, now seen corresponding path program 8 times [2019-11-25 08:56:51,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:51,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836579222] [2019-11-25 08:56:51,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:51,104 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:51,104 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:56:51,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:56:51 BoogieIcfgContainer [2019-11-25 08:56:51,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:56:51,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:56:51,126 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:56:51,126 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:56:51,126 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:46" (3/4) ... [2019-11-25 08:56:51,129 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:56:51,129 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:56:51,132 INFO L168 Benchmark]: Toolchain (without parser) took 5321.11 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 227.0 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -226.6 MB). Peak memory consumption was 387.5 kB. Max. memory is 11.5 GB. [2019-11-25 08:56:51,132 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:51,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -219.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:51,133 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:51,133 INFO L168 Benchmark]: Boogie Preprocessor took 17.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:51,134 INFO L168 Benchmark]: RCFGBuilder took 247.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:51,135 INFO L168 Benchmark]: TraceAbstraction took 4761.75 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 53.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -27.3 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:51,137 INFO L168 Benchmark]: Witness Printer took 3.99 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:51,147 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 258.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -219.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 247.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4761.75 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 53.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -27.3 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.99 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftLeft at line 22, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L14] unsigned char x; [L15] unsigned char y; [L16] unsigned char c; [L18] x = 37 [L19] y = 0 [L20] c = 0 [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND TRUE c < (unsigned char)8 [L22] unsigned char i = ((unsigned char)1) << c; [L23] unsigned char bit = x & i; [L24] COND TRUE bit != (unsigned char)0 [L25] y = y + i [L27] c = c + ((unsigned char)1) [L21] COND FALSE !(c < (unsigned char)8) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.7s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 136 SDslu, 565 SDs, 0 SdLazy, 585 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 81 SyntacticMatches, 13 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 232 ConstructedInterpolants, 70 QuantifiedInterpolants, 54320 SizeOfPredicates, 7 NumberOfNonLiveVariables, 280 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 0/392 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: 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 0.1.24-6b5699a [2019-11-25 08:56:52,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:56:52,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:56:52,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:56:52,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:56:52,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:56:52,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:56:52,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:56:52,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:56:52,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:56:52,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:56:52,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:56:52,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:56:52,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:56:52,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:56:52,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:56:52,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:56:52,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:56:52,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:56:52,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:56:52,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:56:52,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:56:52,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:56:52,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:56:52,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:56:52,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:56:52,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:56:52,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:56:52,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:56:52,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:56:52,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:56:52,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:56:52,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:56:52,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:56:52,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:56:52,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:56:52,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:56:52,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:56:52,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:56:52,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:56:52,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:56:52,952 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:56:52,970 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:56:52,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:56:52,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:56:52,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:56:52,973 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:56:52,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:56:52,974 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:56:52,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:56:52,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:56:52,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:56:52,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:56:52,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:56:52,976 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:56:52,976 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:56:52,977 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:56:52,977 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:56:52,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:56:52,978 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:56:52,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:56:52,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:56:52,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:56:52,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:56:52,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:56:52,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:56:52,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:56:52,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:56:52,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:56:52,980 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:56:52,981 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:56:52,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:56:52,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:56:52,981 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer 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(__VERIFIER_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 -> dc393f6c4862d8369d85fc8f5aceb831c4046350 [2019-11-25 08:56:53,268 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:56:53,277 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:56:53,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:56:53,284 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:56:53,284 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:56:53,285 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2019-11-25 08:56:53,341 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/data/2775fb05e/489cf456b8bb48379dc47ddfa7477c10/FLAG2aea75206 [2019-11-25 08:56:53,740 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:56:53,742 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/sv-benchmarks/c/bitvector/num_conversion_1.c [2019-11-25 08:56:53,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/data/2775fb05e/489cf456b8bb48379dc47ddfa7477c10/FLAG2aea75206 [2019-11-25 08:56:54,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/data/2775fb05e/489cf456b8bb48379dc47ddfa7477c10 [2019-11-25 08:56:54,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:56:54,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:56:54,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:54,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:56:54,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:56:54,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:54" (1/1) ... [2019-11-25 08:56:54,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@747f3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:54, skipping insertion in model container [2019-11-25 08:56:54,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:54" (1/1) ... [2019-11-25 08:56:54,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:56:54,202 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:56:54,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:54,376 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:56:54,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:54,408 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:56:54,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:54 WrapperNode [2019-11-25 08:56:54,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:54,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:54,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:56:54,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:56:54,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:54" (1/1) ... [2019-11-25 08:56:54,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:54" (1/1) ... [2019-11-25 08:56:54,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:54,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:56:54,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:56:54,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:56:54,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:54" (1/1) ... [2019-11-25 08:56:54,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:54" (1/1) ... [2019-11-25 08:56:54,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:54" (1/1) ... [2019-11-25 08:56:54,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:54" (1/1) ... [2019-11-25 08:56:54,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:54" (1/1) ... [2019-11-25 08:56:54,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:54" (1/1) ... [2019-11-25 08:56:54,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:54" (1/1) ... [2019-11-25 08:56:54,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:56:54,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:56:54,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:56:54,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:56:54,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/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 [2019-11-25 08:56:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:56:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:56:54,749 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:56:54,749 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:56:54,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:54 BoogieIcfgContainer [2019-11-25 08:56:54,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:56:54,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:56:54,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:56:54,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:56:54,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:56:54" (1/3) ... [2019-11-25 08:56:54,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d209ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:54, skipping insertion in model container [2019-11-25 08:56:54,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:54" (2/3) ... [2019-11-25 08:56:54,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d209ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:54, skipping insertion in model container [2019-11-25 08:56:54,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:54" (3/3) ... [2019-11-25 08:56:54,757 INFO L109 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2019-11-25 08:56:54,763 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:56:54,768 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:56:54,775 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:56:54,793 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:56:54,793 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:56:54,794 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:56:54,794 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:56:54,794 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:56:54,794 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:56:54,794 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:56:54,795 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:56:54,806 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-25 08:56:54,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-25 08:56:54,810 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:54,811 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-25 08:56:54,811 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:54,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:54,815 INFO L82 PathProgramCache]: Analyzing trace with hash 30139652, now seen corresponding path program 1 times [2019-11-25 08:56:54,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:54,825 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1577357920] [2019-11-25 08:56:54,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:54,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-25 08:56:54,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:54,898 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:54,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1577357920] [2019-11-25 08:56:54,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:54,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:56:54,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431377935] [2019-11-25 08:56:54,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:56:54,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:54,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:56:54,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:56:54,923 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-11-25 08:56:54,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:54,939 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-25 08:56:54,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:56:54,941 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-25 08:56:54,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:54,948 INFO L225 Difference]: With dead ends: 20 [2019-11-25 08:56:54,949 INFO L226 Difference]: Without dead ends: 8 [2019-11-25 08:56:54,951 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:56:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-25 08:56:54,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-25 08:56:54,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:56:54,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-25 08:56:54,986 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-11-25 08:56:54,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:54,986 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-25 08:56:54,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:56:54,987 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-25 08:56:54,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-25 08:56:54,987 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:54,988 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-25 08:56:55,189 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:55,190 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:55,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:55,190 INFO L82 PathProgramCache]: Analyzing trace with hash 29811951, now seen corresponding path program 1 times [2019-11-25 08:56:55,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:55,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [728079363] [2019-11-25 08:56:55,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:55,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:55,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:55,251 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:55,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:55,264 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [728079363] [2019-11-25 08:56:55,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:55,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-25 08:56:55,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016615191] [2019-11-25 08:56:55,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:56:55,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:55,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:56:55,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:56:55,267 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-11-25 08:56:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:55,304 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2019-11-25 08:56:55,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:56:55,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-25 08:56:55,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:55,305 INFO L225 Difference]: With dead ends: 16 [2019-11-25 08:56:55,305 INFO L226 Difference]: Without dead ends: 12 [2019-11-25 08:56:55,306 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:56:55,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-25 08:56:55,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-25 08:56:55,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:56:55,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-25 08:56:55,309 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2019-11-25 08:56:55,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:55,310 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-25 08:56:55,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:56:55,310 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-25 08:56:55,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:56:55,310 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:55,310 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2019-11-25 08:56:55,511 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:55,511 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:55,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1123862993, now seen corresponding path program 1 times [2019-11-25 08:56:55,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:55,513 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [135259852] [2019-11-25 08:56:55,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:55,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:56:55,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:55,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:55,614 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:55,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:55,679 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [135259852] [2019-11-25 08:56:55,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:55,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-11-25 08:56:55,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274413487] [2019-11-25 08:56:55,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:56:55,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:55,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:56:55,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:56:55,681 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 7 states. [2019-11-25 08:56:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:55,970 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2019-11-25 08:56:55,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-25 08:56:55,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-11-25 08:56:55,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:55,972 INFO L225 Difference]: With dead ends: 41 [2019-11-25 08:56:55,972 INFO L226 Difference]: Without dead ends: 34 [2019-11-25 08:56:55,973 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:56:55,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-25 08:56:55,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 19. [2019-11-25 08:56:55,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-25 08:56:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-11-25 08:56:55,981 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2019-11-25 08:56:55,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:55,981 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-11-25 08:56:55,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:56:55,981 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-11-25 08:56:55,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:56:55,982 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:55,982 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:56,184 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:56,184 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:56,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:56,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1066604691, now seen corresponding path program 1 times [2019-11-25 08:56:56,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:56,186 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1110454624] [2019-11-25 08:56:56,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:56,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:56,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:56,259 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:56,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1110454624] [2019-11-25 08:56:56,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:56,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-11-25 08:56:56,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800454166] [2019-11-25 08:56:56,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:56:56,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:56,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:56:56,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:56:56,310 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 8 states. [2019-11-25 08:56:56,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:56,422 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2019-11-25 08:56:56,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:56:56,423 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-25 08:56:56,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:56,424 INFO L225 Difference]: With dead ends: 28 [2019-11-25 08:56:56,424 INFO L226 Difference]: Without dead ends: 24 [2019-11-25 08:56:56,425 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:56:56,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-25 08:56:56,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-25 08:56:56,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-25 08:56:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-25 08:56:56,430 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 11 [2019-11-25 08:56:56,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:56,431 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-25 08:56:56,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:56:56,431 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-25 08:56:56,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-25 08:56:56,432 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:56,432 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 1, 1, 1, 1, 1] [2019-11-25 08:56:56,638 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:56,638 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:56,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:56,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1658775637, now seen corresponding path program 2 times [2019-11-25 08:56:56,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:56,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [976683443] [2019-11-25 08:56:56,640 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:56,718 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:56:56,718 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:56:56,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:56:56,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:56,801 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:56:56,801 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:56:57,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [976683443] [2019-11-25 08:56:57,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:57,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-25 08:56:57,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204536511] [2019-11-25 08:56:57,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-25 08:56:57,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:57,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-25 08:56:57,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:56:57,010 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 13 states. [2019-11-25 08:56:57,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:57,663 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2019-11-25 08:56:57,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-25 08:56:57,664 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2019-11-25 08:56:57,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:57,665 INFO L225 Difference]: With dead ends: 75 [2019-11-25 08:56:57,665 INFO L226 Difference]: Without dead ends: 66 [2019-11-25 08:56:57,666 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2019-11-25 08:56:57,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-25 08:56:57,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 37. [2019-11-25 08:56:57,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-25 08:56:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2019-11-25 08:56:57,686 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 23 [2019-11-25 08:56:57,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:57,686 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2019-11-25 08:56:57,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-25 08:56:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2019-11-25 08:56:57,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-25 08:56:57,687 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:57,687 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1] [2019-11-25 08:56:57,887 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:57,888 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:57,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:57,888 INFO L82 PathProgramCache]: Analyzing trace with hash -978717267, now seen corresponding path program 3 times [2019-11-25 08:56:57,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:57,889 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1252840692] [2019-11-25 08:56:57,889 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:57,921 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-25 08:56:57,922 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:56:57,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:56:57,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-25 08:56:58,025 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-25 08:56:58,188 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1252840692] [2019-11-25 08:56:58,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:58,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-11-25 08:56:58,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685374756] [2019-11-25 08:56:58,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:56:58,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:58,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:56:58,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:56:58,192 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 10 states. [2019-11-25 08:56:58,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:58,442 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2019-11-25 08:56:58,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:56:58,442 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2019-11-25 08:56:58,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:58,445 INFO L225 Difference]: With dead ends: 86 [2019-11-25 08:56:58,445 INFO L226 Difference]: Without dead ends: 52 [2019-11-25 08:56:58,445 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:56:58,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-25 08:56:58,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2019-11-25 08:56:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-25 08:56:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2019-11-25 08:56:58,466 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 23 [2019-11-25 08:56:58,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:58,466 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2019-11-25 08:56:58,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:56:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2019-11-25 08:56:58,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-25 08:56:58,467 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:58,467 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 1, 1, 1, 1, 1] [2019-11-25 08:56:58,669 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:58,669 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:58,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:58,669 INFO L82 PathProgramCache]: Analyzing trace with hash -921458965, now seen corresponding path program 4 times [2019-11-25 08:56:58,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:58,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1797166289] [2019-11-25 08:56:58,670 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:58,711 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:56:58,711 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:56:58,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:56:58,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:58,801 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:58,801 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:56:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:58,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1797166289] [2019-11-25 08:56:58,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:58,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2019-11-25 08:56:58,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583542310] [2019-11-25 08:56:58,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-25 08:56:58,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:56:58,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-25 08:56:58,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:56:58,962 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 16 states. [2019-11-25 08:56:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:59,295 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2019-11-25 08:56:59,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-25 08:56:59,296 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 23 [2019-11-25 08:56:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:59,297 INFO L225 Difference]: With dead ends: 80 [2019-11-25 08:56:59,297 INFO L226 Difference]: Without dead ends: 42 [2019-11-25 08:56:59,297 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2019-11-25 08:56:59,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-25 08:56:59,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-11-25 08:56:59,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-25 08:56:59,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-11-25 08:56:59,304 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 23 [2019-11-25 08:56:59,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:59,304 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2019-11-25 08:56:59,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-25 08:56:59,304 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2019-11-25 08:56:59,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-25 08:56:59,307 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:59,308 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1] [2019-11-25 08:56:59,509 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:59,509 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:59,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:59,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1658007635, now seen corresponding path program 5 times [2019-11-25 08:56:59,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:56:59,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1783581212] [2019-11-25 08:56:59,510 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:56:59,567 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2019-11-25 08:56:59,567 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:56:59,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-25 08:56:59,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:56:59,867 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:57:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 4 proven. 85 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:57:00,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1783581212] [2019-11-25 08:57:00,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:57:00,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 32 [2019-11-25 08:57:00,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376946849] [2019-11-25 08:57:00,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-11-25 08:57:00,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:57:00,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-11-25 08:57:00,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2019-11-25 08:57:00,975 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 33 states. [2019-11-25 08:57:02,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:02,639 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2019-11-25 08:57:02,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-25 08:57:02,639 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 29 [2019-11-25 08:57:02,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:02,640 INFO L225 Difference]: With dead ends: 47 [2019-11-25 08:57:02,640 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:57:02,641 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=302, Invalid=1338, Unknown=0, NotChecked=0, Total=1640 [2019-11-25 08:57:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:57:02,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:57:02,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:57:02,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:57:02,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2019-11-25 08:57:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:02,642 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:57:02,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-11-25 08:57:02,642 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:57:02,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:57:02,843 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:57:02,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:57:02,984 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 136 [2019-11-25 08:57:03,481 WARN L192 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 62 [2019-11-25 08:57:03,483 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:57:03,484 INFO L447 ceAbstractionStarter]: At program point L31(lines 12 32) the Hoare annotation is: true [2019-11-25 08:57:03,484 INFO L440 ceAbstractionStarter]: At program point L21-2(lines 21 28) the Hoare annotation is: (let ((.cse0 (= (_ bv0 32) ((_ zero_extend 24) ULTIMATE.start_main_~bit~0)))) (let ((.cse5 (not .cse0)) (.cse4 (= (_ bv5 8) ULTIMATE.start_main_~y~0)) (.cse1 (= (_ bv37 8) ULTIMATE.start_main_~y~0)) (.cse6 (= (_ bv1 8) ULTIMATE.start_main_~y~0)) (.cse7 (= ULTIMATE.start_main_~bit~0 (_ bv0 8))) (.cse2 (= (_ bv37 8) ULTIMATE.start_main_~x~0))) (or (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ULTIMATE.start_main_~c~0) (_ bv1 32)))))) (and .cse0 .cse1 .cse2 (not (bvslt .cse3 (_ bv8 32))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ULTIMATE.start_main_~y~0) ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse3 (_ bv1 32)))))))))) ((_ zero_extend 24) ULTIMATE.start_main_~x~0)))) (and .cse4 .cse2 (= (_ bv3 8) ULTIMATE.start_main_~c~0) .cse5) (and .cse6 (= (_ bv1 8) ULTIMATE.start_main_~c~0) .cse2 .cse5) (and .cse7 .cse4 .cse2 (= (_ bv4 8) ULTIMATE.start_main_~c~0)) (and .cse7 .cse4 .cse2 (= (_ bv5 8) ULTIMATE.start_main_~c~0)) (and .cse1 .cse2 (= (_ bv6 8) ULTIMATE.start_main_~c~0) (= (_ bv0 8) (bvadd ULTIMATE.start_main_~bit~0 (_ bv224 8)))) (and .cse6 .cse7 .cse2 (= (_ bv2 8) ULTIMATE.start_main_~c~0)) (and (= (_ bv0 8) ULTIMATE.start_main_~c~0) (= (_ bv0 8) ULTIMATE.start_main_~y~0) .cse2)))) [2019-11-25 08:57:03,484 INFO L444 ceAbstractionStarter]: For program point L21-3(lines 21 28) no Hoare annotation was computed. [2019-11-25 08:57:03,484 INFO L444 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-11-25 08:57:03,484 INFO L447 ceAbstractionStarter]: At program point L5-2(lines 4 9) the Hoare annotation is: true [2019-11-25 08:57:03,484 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:57:03,484 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:57:03,485 INFO L444 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2019-11-25 08:57:03,485 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-25 08:57:03,485 INFO L444 ceAbstractionStarter]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2019-11-25 08:57:03,485 INFO L444 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-25 08:57:03,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:57:03 BoogieIcfgContainer [2019-11-25 08:57:03,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:57:03,500 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:57:03,500 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:57:03,500 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:57:03,501 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:54" (3/4) ... [2019-11-25 08:57:03,504 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:57:03,512 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-25 08:57:03,513 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:57:03,551 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e2a661a9-f367-4750-a4b1-7890f859a40d/bin/uautomizer/witness.graphml [2019-11-25 08:57:03,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:57:03,552 INFO L168 Benchmark]: Toolchain (without parser) took 9379.43 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 269.5 MB). Free memory was 961.8 MB in the beginning and 1.2 GB in the end (delta: -276.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:57:03,553 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:57:03,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.40 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:03,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -168.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:03,554 INFO L168 Benchmark]: Boogie Preprocessor took 29.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:03,555 INFO L168 Benchmark]: RCFGBuilder took 226.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:03,555 INFO L168 Benchmark]: TraceAbstraction took 8748.56 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 146.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -146.1 MB). Peak memory consumption was 375.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:03,556 INFO L168 Benchmark]: Witness Printer took 51.17 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:03,559 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 235.40 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 83.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -168.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 226.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8748.56 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 146.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -146.1 MB). Peak memory consumption was 375.0 MB. Max. memory is 11.5 GB. * Witness Printer took 51.17 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((((((((0bv32 == ~zero_extendFrom8To32(bit) && 37bv8 == y) && 37bv8 == x) && !~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 8bv32)) && ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]) == ~zero_extendFrom8To32(x)) || (((5bv8 == y && 37bv8 == x) && 3bv8 == c) && !(0bv32 == ~zero_extendFrom8To32(bit)))) || (((1bv8 == y && 1bv8 == c) && 37bv8 == x) && !(0bv32 == ~zero_extendFrom8To32(bit)))) || (((bit == 0bv8 && 5bv8 == y) && 37bv8 == x) && 4bv8 == c)) || (((bit == 0bv8 && 5bv8 == y) && 37bv8 == x) && 5bv8 == c)) || (((37bv8 == y && 37bv8 == x) && 6bv8 == c) && 0bv8 == ~bvadd64(bit, 224bv8))) || (((1bv8 == y && bit == 0bv8) && 37bv8 == x) && 2bv8 == c)) || ((0bv8 == c && 0bv8 == y) && 37bv8 == x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: SAFE, OverallTime: 8.6s, OverallIterations: 8, TraceHistogramMax: 8, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, HoareTripleCheckerStatistics: 64 SDtfs, 317 SDslu, 211 SDs, 0 SdLazy, 777 SolverSat, 140 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 283 GetRequests, 164 SyntacticMatches, 3 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 19 NumberOfFragments, 139 HoareAnnotationTreeSize, 3 FomulaSimplifications, 522 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 642 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 130 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 244 ConstructedInterpolants, 17 QuantifiedInterpolants, 74076 SizeOfPredicates, 27 NumberOfNonLiveVariables, 224 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 158/510 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...