./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8dab4c89b7bfa0a9578f6aa14537851d09f72688 ...................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8dab4c89b7bfa0a9578f6aa14537851d09f72688 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:18:03,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:18:03,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:18:03,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:18:03,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:18:03,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:18:03,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:18:03,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:18:03,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:18:03,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:18:03,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:18:03,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:18:03,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:18:03,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:18:03,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:18:03,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:18:03,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:18:03,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:18:03,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:18:03,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:18:03,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:18:03,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:18:03,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:18:03,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:18:03,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:18:03,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:18:03,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:18:03,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:18:03,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:18:03,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:18:03,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:18:03,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:18:03,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:18:03,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:18:03,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:18:03,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:18:03,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:18:03,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:18:03,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:18:03,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:18:03,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:18:03,763 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:18:03,800 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:18:03,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:18:03,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:18:03,802 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:18:03,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:18:03,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:18:03,804 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:18:03,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:18:03,804 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:18:03,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:18:03,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:18:03,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:18:03,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:18:03,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:18:03,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:18:03,806 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:18:03,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:18:03,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:18:03,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:18:03,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:18:03,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:18:03,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:18:03,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:18:03,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:18:03,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:18:03,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:18:03,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:18:03,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:18:03,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:18:03,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:18:03,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dab4c89b7bfa0a9578f6aa14537851d09f72688 [2021-10-13 01:18:04,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:18:04,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:18:04,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:18:04,188 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:18:04,189 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:18:04,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c [2021-10-13 01:18:04,298 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/data/c878da728/c21cf92537e041c987d7dd117ee2cdf6/FLAG518972b46 [2021-10-13 01:18:04,848 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:18:04,853 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c [2021-10-13 01:18:04,860 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/data/c878da728/c21cf92537e041c987d7dd117ee2cdf6/FLAG518972b46 [2021-10-13 01:18:05,160 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/data/c878da728/c21cf92537e041c987d7dd117ee2cdf6 [2021-10-13 01:18:05,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:18:05,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:18:05,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:18:05,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:18:05,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:18:05,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:18:05" (1/1) ... [2021-10-13 01:18:05,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a62688f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:05, skipping insertion in model container [2021-10-13 01:18:05,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:18:05" (1/1) ... [2021-10-13 01:18:05,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:18:05,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:18:05,438 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c[709,722] [2021-10-13 01:18:05,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:18:05,481 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:18:05,497 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c[709,722] [2021-10-13 01:18:05,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:18:05,538 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:18:05,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:05 WrapperNode [2021-10-13 01:18:05,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:18:05,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:18:05,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:18:05,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:18:05,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:05" (1/1) ... [2021-10-13 01:18:05,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:05" (1/1) ... [2021-10-13 01:18:05,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:18:05,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:18:05,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:18:05,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:18:05,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:05" (1/1) ... [2021-10-13 01:18:05,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:05" (1/1) ... [2021-10-13 01:18:05,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:05" (1/1) ... [2021-10-13 01:18:05,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:05" (1/1) ... [2021-10-13 01:18:05,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:05" (1/1) ... [2021-10-13 01:18:05,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:05" (1/1) ... [2021-10-13 01:18:05,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:05" (1/1) ... [2021-10-13 01:18:05,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:18:05,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:18:05,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:18:05,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:18:05,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:05" (1/1) ... [2021-10-13 01:18:05,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:18:05,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:18:05,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:18:05,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:18:05,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:18:05,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:18:05,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:18:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:18:06,065 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:18:06,066 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-13 01:18:06,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:18:06 BoogieIcfgContainer [2021-10-13 01:18:06,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:18:06,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:18:06,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:18:06,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:18:06,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:18:05" (1/3) ... [2021-10-13 01:18:06,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c3ac84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:18:06, skipping insertion in model container [2021-10-13 01:18:06,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:05" (2/3) ... [2021-10-13 01:18:06,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c3ac84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:18:06, skipping insertion in model container [2021-10-13 01:18:06,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:18:06" (3/3) ... [2021-10-13 01:18:06,080 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound100.c [2021-10-13 01:18:06,087 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:18:06,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 01:18:06,148 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:18:06,157 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 01:18:06,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 01:18:06,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:18:06,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 01:18:06,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:18:06,194 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 01:18:06,195 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 01:18:06,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:06,216 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-10-13 01:18:06,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:18:06,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36093137] [2021-10-13 01:18:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:06,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:18:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:18:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:18:06,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:18:06,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36093137] [2021-10-13 01:18:06,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36093137] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:18:06,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:18:06,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:18:06,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078550512] [2021-10-13 01:18:06,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:18:06,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:18:06,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:18:06,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:18:06,497 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:18:06,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:18:06,518 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-10-13 01:18:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:18:06,520 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 01:18:06,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:18:06,531 INFO L225 Difference]: With dead ends: 62 [2021-10-13 01:18:06,531 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 01:18:06,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:18:06,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 01:18:06,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-13 01:18:06,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:18:06,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-10-13 01:18:06,577 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-10-13 01:18:06,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:18:06,578 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-10-13 01:18:06,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:18:06,578 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-10-13 01:18:06,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 01:18:06,579 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:18:06,580 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 01:18:06,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:18:06,580 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 01:18:06,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:06,582 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-13 01:18:06,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:18:06,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895429773] [2021-10-13 01:18:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:06,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:18:06,609 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:18:06,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122564760] [2021-10-13 01:18:06,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:06,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:18:06,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:18:06,620 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:18:06,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 01:18:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:06,731 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:18:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:18:06,783 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:18:06,784 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:18:06,789 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:18:06,791 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:18:06,792 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:18:06,792 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:18:06,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:18:06,793 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:18:06,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:18:07,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:18:07,019 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:18:07,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:18:07 BoogieIcfgContainer [2021-10-13 01:18:07,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:18:07,051 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:18:07,051 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:18:07,052 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:18:07,052 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:18:06" (3/4) ... [2021-10-13 01:18:07,056 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 01:18:07,056 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:18:07,059 INFO L168 Benchmark]: Toolchain (without parser) took 1892.23 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 52.7 MB in the beginning and 42.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:18:07,060 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 86.0 MB. Free memory was 58.5 MB in the beginning and 58.4 MB in the end (delta: 32.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:18:07,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.41 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 52.5 MB in the beginning and 81.0 MB in the end (delta: -28.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:18:07,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.81 ms. Allocated memory is still 104.9 MB. Free memory was 81.0 MB in the beginning and 79.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:18:07,062 INFO L168 Benchmark]: Boogie Preprocessor took 42.71 ms. Allocated memory is still 104.9 MB. Free memory was 79.4 MB in the beginning and 78.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:18:07,063 INFO L168 Benchmark]: RCFGBuilder took 407.55 ms. Allocated memory is still 104.9 MB. Free memory was 78.4 MB in the beginning and 67.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:18:07,064 INFO L168 Benchmark]: TraceAbstraction took 973.83 ms. Allocated memory is still 104.9 MB. Free memory was 67.4 MB in the beginning and 42.7 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:18:07,065 INFO L168 Benchmark]: Witness Printer took 4.94 ms. Allocated memory is still 104.9 MB. Free memory was 42.7 MB in the beginning and 42.2 MB in the end (delta: 521.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:18:07,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 86.0 MB. Free memory was 58.5 MB in the beginning and 58.4 MB in the end (delta: 32.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 374.41 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 52.5 MB in the beginning and 81.0 MB in the end (delta: -28.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.81 ms. Allocated memory is still 104.9 MB. Free memory was 81.0 MB in the beginning and 79.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.71 ms. Allocated memory is still 104.9 MB. Free memory was 79.4 MB in the beginning and 78.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 407.55 ms. Allocated memory is still 104.9 MB. Free memory was 78.4 MB in the beginning and 67.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 973.83 ms. Allocated memory is still 104.9 MB. Free memory was 67.4 MB in the beginning and 42.7 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.94 ms. Allocated memory is still 104.9 MB. Free memory was 42.7 MB in the beginning and 42.2 MB in the end (delta: 521.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<100 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 872.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 21.5ms, AutomataDifference: 58.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.2ms SsaConstructionTime, 69.2ms SatisfiabilityAnalysisTime, 61.3ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 01:18:07,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:18:10,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:18:10,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:18:10,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:18:10,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:18:10,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:18:10,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:18:10,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:18:10,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:18:10,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:18:10,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:18:10,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:18:10,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:18:10,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:18:10,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:18:10,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:18:10,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:18:10,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:18:10,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:18:10,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:18:10,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:18:10,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:18:10,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:18:10,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:18:10,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:18:10,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:18:10,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:18:10,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:18:10,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:18:10,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:18:10,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:18:10,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:18:10,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:18:10,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:18:10,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:18:10,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:18:10,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:18:10,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:18:10,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:18:10,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:18:10,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:18:10,360 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-13 01:18:10,428 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:18:10,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:18:10,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:18:10,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:18:10,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:18:10,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:18:10,433 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:18:10,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:18:10,434 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:18:10,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:18:10,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:18:10,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:18:10,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:18:10,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:18:10,437 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 01:18:10,438 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 01:18:10,438 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:18:10,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:18:10,439 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:18:10,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:18:10,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:18:10,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:18:10,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:18:10,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:18:10,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:18:10,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:18:10,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:18:10,442 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 01:18:10,442 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 01:18:10,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:18:10,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:18:10,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 01:18:10,444 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dab4c89b7bfa0a9578f6aa14537851d09f72688 [2021-10-13 01:18:10,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:18:10,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:18:10,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:18:10,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:18:10,980 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:18:10,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c [2021-10-13 01:18:11,081 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/data/3baf63278/d4de2d014c76411f9a059461d7a624d2/FLAGf0cc1b3e0 [2021-10-13 01:18:11,764 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:18:11,770 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c [2021-10-13 01:18:11,779 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/data/3baf63278/d4de2d014c76411f9a059461d7a624d2/FLAGf0cc1b3e0 [2021-10-13 01:18:12,089 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/data/3baf63278/d4de2d014c76411f9a059461d7a624d2 [2021-10-13 01:18:12,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:18:12,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:18:12,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:18:12,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:18:12,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:18:12,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:18:12" (1/1) ... [2021-10-13 01:18:12,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6288b2b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:12, skipping insertion in model container [2021-10-13 01:18:12,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:18:12" (1/1) ... [2021-10-13 01:18:12,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:18:12,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:18:12,334 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c[709,722] [2021-10-13 01:18:12,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:18:12,387 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:18:12,403 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c[709,722] [2021-10-13 01:18:12,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:18:12,447 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:18:12,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:12 WrapperNode [2021-10-13 01:18:12,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:18:12,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:18:12,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:18:12,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:18:12,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:12" (1/1) ... [2021-10-13 01:18:12,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:12" (1/1) ... [2021-10-13 01:18:12,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:18:12,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:18:12,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:18:12,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:18:12,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:12" (1/1) ... [2021-10-13 01:18:12,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:12" (1/1) ... [2021-10-13 01:18:12,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:12" (1/1) ... [2021-10-13 01:18:12,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:12" (1/1) ... [2021-10-13 01:18:12,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:12" (1/1) ... [2021-10-13 01:18:12,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:12" (1/1) ... [2021-10-13 01:18:12,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:12" (1/1) ... [2021-10-13 01:18:12,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:18:12,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:18:12,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:18:12,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:18:12,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:12" (1/1) ... [2021-10-13 01:18:12,600 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:18:12,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:18:12,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:18:12,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:18:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 01:18:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:18:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:18:12,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:18:26,237 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:18:26,237 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-13 01:18:26,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:18:26 BoogieIcfgContainer [2021-10-13 01:18:26,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:18:26,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:18:26,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:18:26,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:18:26,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:18:12" (1/3) ... [2021-10-13 01:18:26,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4cceed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:18:26, skipping insertion in model container [2021-10-13 01:18:26,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:18:12" (2/3) ... [2021-10-13 01:18:26,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4cceed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:18:26, skipping insertion in model container [2021-10-13 01:18:26,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:18:26" (3/3) ... [2021-10-13 01:18:26,252 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound100.c [2021-10-13 01:18:26,259 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:18:26,260 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 01:18:26,385 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:18:26,397 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 01:18:26,398 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 01:18:26,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:18:26,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 01:18:26,423 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:18:26,424 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 01:18:26,424 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 01:18:26,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:26,432 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-10-13 01:18:26,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:18:26,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572533742] [2021-10-13 01:18:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:26,452 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:18:26,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:18:26,454 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:18:26,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 01:18:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:18:26,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 01:18:26,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:18:26,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:18:26,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:18:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:18:26,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:18:26,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572533742] [2021-10-13 01:18:26,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572533742] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:18:26,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:18:26,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 01:18:26,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483856860] [2021-10-13 01:18:26,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:18:26,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:18:26,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:18:26,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:18:26,809 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:18:26,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:18:26,831 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-10-13 01:18:26,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:18:26,832 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 01:18:26,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:18:26,843 INFO L225 Difference]: With dead ends: 62 [2021-10-13 01:18:26,843 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 01:18:26,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:18:26,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 01:18:26,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-13 01:18:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:18:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-10-13 01:18:26,887 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-10-13 01:18:26,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:18:26,888 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-10-13 01:18:26,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:18:26,888 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-10-13 01:18:26,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 01:18:26,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:18:26,889 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 01:18:26,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:18:27,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:18:27,109 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 01:18:27,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:27,110 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-13 01:18:27,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:18:27,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375016796] [2021-10-13 01:18:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:27,111 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:18:27,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:18:27,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:18:27,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 01:18:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:18:27,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:18:27,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:18:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:18:27,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:18:36,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:18:36,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:18:36,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375016796] [2021-10-13 01:18:36,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375016796] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:18:36,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:18:36,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 01:18:36,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196834001] [2021-10-13 01:18:36,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:18:36,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:18:36,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:18:36,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:18:36,021 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:18:58,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:18:58,223 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-13 01:18:58,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:18:58,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 01:18:58,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:18:58,225 INFO L225 Difference]: With dead ends: 39 [2021-10-13 01:18:58,225 INFO L226 Difference]: Without dead ends: 35 [2021-10-13 01:18:58,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5956.3ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:18:58,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-13 01:18:58,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-10-13 01:18:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:18:58,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-10-13 01:18:58,236 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2021-10-13 01:18:58,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:18:58,236 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-10-13 01:18:58,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:18:58,237 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-10-13 01:18:58,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 01:18:58,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:18:58,238 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:18:58,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 01:18:58,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:18:58,454 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 01:18:58,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:58,455 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-13 01:18:58,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:18:58,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335824620] [2021-10-13 01:18:58,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:18:58,457 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:18:58,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:18:58,459 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:18:58,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 01:19:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:19:00,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:19:00,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:19:02,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:19:02,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:19:08,959 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-10-13 01:19:10,998 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-10-13 01:19:34,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:19:34,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:19:34,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335824620] [2021-10-13 01:19:34,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335824620] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:19:34,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:19:34,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-13 01:19:34,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446232125] [2021-10-13 01:19:34,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 01:19:34,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:19:34,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:19:34,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2021-10-13 01:19:34,941 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:19:46,516 WARN L207 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 14 [2021-10-13 01:19:51,289 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse1 .cse1))) (_ bv0 32)))) is different from false [2021-10-13 01:19:53,344 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse1 .cse1))) (_ bv0 32)))) is different from true [2021-10-13 01:19:56,079 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-13 01:20:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:20:54,729 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-10-13 01:20:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:20:54,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 01:20:54,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:20:54,731 INFO L225 Difference]: With dead ends: 36 [2021-10-13 01:20:54,731 INFO L226 Difference]: Without dead ends: 33 [2021-10-13 01:20:54,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 33985.7ms TimeCoverageRelationStatistics Valid=26, Invalid=52, Unknown=6, NotChecked=48, Total=132 [2021-10-13 01:20:54,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-13 01:20:54,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-10-13 01:20:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:20:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-10-13 01:20:54,742 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2021-10-13 01:20:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:20:54,742 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-10-13 01:20:54,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:20:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-10-13 01:20:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 01:20:54,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:20:54,744 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:20:54,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 01:20:54,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:20:54,962 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 01:20:54,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:20:54,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1248817364, now seen corresponding path program 1 times [2021-10-13 01:20:54,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:20:54,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378046669] [2021-10-13 01:20:54,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:20:54,964 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:20:54,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:20:54,966 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:20:54,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 01:20:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:20:55,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 01:20:55,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:20:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:20:55,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:20:55,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:20:55,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:20:55,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378046669] [2021-10-13 01:20:55,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378046669] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:20:55,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:20:55,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 01:20:55,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29333782] [2021-10-13 01:20:55,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 01:20:55,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:20:55,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:20:55,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:20:55,751 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:20:57,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:20:57,688 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2021-10-13 01:20:57,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:20:57,689 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 01:20:57,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:20:57,691 INFO L225 Difference]: With dead ends: 64 [2021-10-13 01:20:57,691 INFO L226 Difference]: Without dead ends: 50 [2021-10-13 01:20:57,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 230.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:20:57,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-13 01:20:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2021-10-13 01:20:57,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:20:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-10-13 01:20:57,703 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 9 [2021-10-13 01:20:57,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:20:57,704 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-10-13 01:20:57,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:20:57,704 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-10-13 01:20:57,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 01:20:57,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:20:57,705 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:20:57,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:20:57,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:20:57,922 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 01:20:57,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:20:57,923 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-13 01:20:57,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:20:57,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258367389] [2021-10-13 01:20:57,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:20:57,924 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:20:57,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:20:57,926 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:20:57,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 01:20:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:20:59,719 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:21:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:02,230 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 01:21:02,230 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:21:02,232 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:21:02,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:21:02,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:21:02,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:21:02,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:21:02,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:21:02,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:02,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:21:02,443 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:21:02,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:21:02 BoogieIcfgContainer [2021-10-13 01:21:02,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:21:02,490 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:21:02,490 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:21:02,496 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:21:02,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:18:26" (3/4) ... [2021-10-13 01:21:02,500 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 01:21:02,593 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:21:02,594 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:21:02,595 INFO L168 Benchmark]: Toolchain (without parser) took 170498.82 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 27.3 MB in the beginning and 39.3 MB in the end (delta: -11.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:02,597 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 50.3 MB. Free memory is still 30.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:21:02,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.55 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 27.1 MB in the beginning and 53.0 MB in the end (delta: -25.9 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:02,602 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.20 ms. Allocated memory is still 69.2 MB. Free memory was 53.0 MB in the beginning and 51.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:02,603 INFO L168 Benchmark]: Boogie Preprocessor took 44.30 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 49.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:21:02,603 INFO L168 Benchmark]: RCFGBuilder took 13652.12 ms. Allocated memory is still 69.2 MB. Free memory was 49.5 MB in the beginning and 38.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:02,604 INFO L168 Benchmark]: TraceAbstraction took 156245.99 ms. Allocated memory is still 69.2 MB. Free memory was 37.9 MB in the beginning and 41.3 MB in the end (delta: -3.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:21:02,609 INFO L168 Benchmark]: Witness Printer took 104.20 ms. Allocated memory is still 69.2 MB. Free memory was 40.9 MB in the beginning and 39.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:02,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 50.3 MB. Free memory is still 30.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.55 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 27.1 MB in the beginning and 53.0 MB in the end (delta: -25.9 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.20 ms. Allocated memory is still 69.2 MB. Free memory was 53.0 MB in the beginning and 51.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.30 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 49.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 13652.12 ms. Allocated memory is still 69.2 MB. Free memory was 49.5 MB in the beginning and 38.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 156245.99 ms. Allocated memory is still 69.2 MB. Free memory was 37.9 MB in the beginning and 41.3 MB in the end (delta: -3.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 104.20 ms. Allocated memory is still 69.2 MB. Free memory was 40.9 MB in the beginning and 39.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<100 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 156063.2ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 14.4ms, AutomataDifference: 103998.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 103 SDtfs, 68 SDslu, 171 SDs, 0 SdLazy, 106 SolverSat, 21 SolverUnsat, 29 SolverUnknown, 0 SolverNotchecked, 82906.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 40172.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 51.3ms AutomataMinimizationTime, 4 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 53.6ms SsaConstructionTime, 4191.1ms SatisfiabilityAnalysisTime, 43824.8ms InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 50 ConstructedInterpolants, 1 QuantifiedInterpolants, 320 SizeOfPredicates, 10 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 01:21:02,846 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-13 01:21:02,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc2851e0-932a-4454-a318-32283f39d0a0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...