./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G --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 6d5fb336862157190b75f459fa5ac35efb8ca70e207f909b082fde37cf98e7f7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:20:14,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:20:14,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:20:14,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:20:14,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:20:14,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:20:14,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:20:14,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:20:14,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:20:14,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:20:14,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:20:14,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:20:14,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:20:14,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:20:14,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:20:14,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:20:14,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:20:14,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:20:14,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:20:14,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:20:14,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:20:14,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:20:14,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:20:14,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:20:14,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:20:14,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:20:14,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:20:14,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:20:14,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:20:14,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:20:14,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:20:14,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:20:14,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:20:14,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:20:14,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:20:14,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:20:14,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:20:14,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:20:14,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:20:14,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:20:14,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:20:14,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:20:14,941 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:20:14,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:20:14,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:20:14,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:20:14,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:20:14,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:20:14,945 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:20:14,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:20:14,945 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:20:14,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:20:14,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:20:14,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:20:14,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:20:14,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:20:14,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:20:14,946 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:20:14,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:20:14,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:20:14,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:20:14,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:20:14,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:20:14,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:20:14,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:20:14,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:20:14,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:20:14,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:20:14,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:20:14,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:20:14,949 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:20:14,950 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:20:14,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:20:14,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:20:14,950 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_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d5fb336862157190b75f459fa5ac35efb8ca70e207f909b082fde37cf98e7f7 [2021-11-23 12:20:15,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:20:15,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:20:15,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:20:15,372 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:20:15,373 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:20:15,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c [2021-11-23 12:20:15,452 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/data/2576f3249/ca265bdd3bff49c7b797f311cc1dbcd3/FLAGc569dc2ee [2021-11-23 12:20:16,034 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:20:16,036 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c [2021-11-23 12:20:16,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/data/2576f3249/ca265bdd3bff49c7b797f311cc1dbcd3/FLAGc569dc2ee [2021-11-23 12:20:16,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/data/2576f3249/ca265bdd3bff49c7b797f311cc1dbcd3 [2021-11-23 12:20:16,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:20:16,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:20:16,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:20:16,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:20:16,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:20:16,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:20:16" (1/1) ... [2021-11-23 12:20:16,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6471cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:16, skipping insertion in model container [2021-11-23 12:20:16,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:20:16" (1/1) ... [2021-11-23 12:20:16,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:20:16,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:20:16,610 WARN L230 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_1f91d9c7-889e-4538-a829-be4f0ca5120c/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c[538,551] [2021-11-23 12:20:16,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:20:16,651 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:20:16,666 WARN L230 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_1f91d9c7-889e-4538-a829-be4f0ca5120c/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c[538,551] [2021-11-23 12:20:16,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:20:16,692 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:20:16,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:16 WrapperNode [2021-11-23 12:20:16,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:20:16,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:20:16,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:20:16,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:20:16,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:16" (1/1) ... [2021-11-23 12:20:16,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:16" (1/1) ... [2021-11-23 12:20:16,738 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 99 [2021-11-23 12:20:16,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:20:16,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:20:16,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:20:16,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:20:16,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:16" (1/1) ... [2021-11-23 12:20:16,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:16" (1/1) ... [2021-11-23 12:20:16,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:16" (1/1) ... [2021-11-23 12:20:16,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:16" (1/1) ... [2021-11-23 12:20:16,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:16" (1/1) ... [2021-11-23 12:20:16,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:16" (1/1) ... [2021-11-23 12:20:16,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:16" (1/1) ... [2021-11-23 12:20:16,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:20:16,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:20:16,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:20:16,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:20:16,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:16" (1/1) ... [2021-11-23 12:20:16,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:20:16,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:20:16,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:20:16,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:20:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:20:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:20:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:20:16,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:20:16,934 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:20:16,936 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:20:17,112 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:20:17,119 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:20:17,119 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 12:20:17,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:20:17 BoogieIcfgContainer [2021-11-23 12:20:17,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:20:17,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:20:17,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:20:17,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:20:17,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:20:16" (1/3) ... [2021-11-23 12:20:17,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d405d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:20:17, skipping insertion in model container [2021-11-23 12:20:17,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:20:16" (2/3) ... [2021-11-23 12:20:17,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d405d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:20:17, skipping insertion in model container [2021-11-23 12:20:17,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:20:17" (3/3) ... [2021-11-23 12:20:17,132 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound10.c [2021-11-23 12:20:17,138 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:20:17,139 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-23 12:20:17,198 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:20:17,207 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-11-23 12:20:17,207 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-23 12:20:17,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 44 states have internal predecessors, (61), 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) [2021-11-23 12:20:17,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 12:20:17,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:20:17,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:20:17,235 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:20:17,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:20:17,242 INFO L85 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-11-23 12:20:17,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:20:17,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081815543] [2021-11-23 12:20:17,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:20:17,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:20:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:20:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:20:17,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:20:17,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081815543] [2021-11-23 12:20:17,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081815543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:20:17,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:20:17,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:20:17,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44481533] [2021-11-23 12:20:17,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:20:17,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:20:17,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:20:17,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:20:17,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:20:17,460 INFO L87 Difference]: Start difference. First operand has 45 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 44 states have internal predecessors, (61), 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 5.5) internal successors, (11), 2 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) [2021-11-23 12:20:17,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:20:17,481 INFO L93 Difference]: Finished difference Result 87 states and 118 transitions. [2021-11-23 12:20:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:20:17,487 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 11 [2021-11-23 12:20:17,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:20:17,498 INFO L225 Difference]: With dead ends: 87 [2021-11-23 12:20:17,499 INFO L226 Difference]: Without dead ends: 41 [2021-11-23 12:20:17,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:20:17,510 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:20:17,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:20:17,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-23 12:20:17,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-23 12:20:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 40 states have internal predecessors, (43), 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) [2021-11-23 12:20:17,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-11-23 12:20:17,559 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 11 [2021-11-23 12:20:17,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:20:17,559 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-11-23 12:20:17,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-11-23 12:20:17,560 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-11-23 12:20:17,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 12:20:17,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:20:17,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:20:17,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:20:17,563 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:20:17,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:20:17,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-11-23 12:20:17,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:20:17,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191502253] [2021-11-23 12:20:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:20:17,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:20:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:20:17,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:20:17,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:20:17,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191502253] [2021-11-23 12:20:17,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191502253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:20:17,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:20:17,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:20:17,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280850953] [2021-11-23 12:20:17,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:20:17,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:20:17,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:20:17,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:20:17,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:20:17,748 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-23 12:20:17,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:20:17,843 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2021-11-23 12:20:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:20:17,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 11 [2021-11-23 12:20:17,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:20:17,846 INFO L225 Difference]: With dead ends: 61 [2021-11-23 12:20:17,847 INFO L226 Difference]: Without dead ends: 59 [2021-11-23 12:20:17,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:20:17,865 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 43 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:20:17,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 73 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:20:17,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-23 12:20:17,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 39. [2021-11-23 12:20:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 38 states have internal predecessors, (41), 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) [2021-11-23 12:20:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-11-23 12:20:17,875 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2021-11-23 12:20:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:20:17,895 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-11-23 12:20:17,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-23 12:20:17,900 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-11-23 12:20:17,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 12:20:17,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:20:17,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:20:17,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:20:17,902 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:20:17,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:20:17,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2021-11-23 12:20:17,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:20:17,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390640882] [2021-11-23 12:20:17,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:20:17,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:20:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:20:18,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:20:18,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:20:18,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390640882] [2021-11-23 12:20:18,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390640882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:20:18,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:20:18,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:20:18,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395824030] [2021-11-23 12:20:18,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:20:18,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:20:18,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:20:18,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:20:18,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:20:18,024 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-23 12:20:18,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:20:18,112 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2021-11-23 12:20:18,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:20:18,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 13 [2021-11-23 12:20:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:20:18,115 INFO L225 Difference]: With dead ends: 59 [2021-11-23 12:20:18,115 INFO L226 Difference]: Without dead ends: 57 [2021-11-23 12:20:18,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:20:18,117 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 38 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:20:18,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 67 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:20:18,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-23 12:20:18,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 37. [2021-11-23 12:20:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.21875) internal successors, (39), 36 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) [2021-11-23 12:20:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-11-23 12:20:18,129 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 13 [2021-11-23 12:20:18,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:20:18,129 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-11-23 12:20:18,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-23 12:20:18,130 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-11-23 12:20:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 12:20:18,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:20:18,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:20:18,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:20:18,131 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:20:18,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:20:18,132 INFO L85 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2021-11-23 12:20:18,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:20:18,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141938030] [2021-11-23 12:20:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:20:18,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:20:18,149 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:20:18,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399329484] [2021-11-23 12:20:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:20:18,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:20:18,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:20:18,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:20:18,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:20:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:20:18,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:20:18,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:20:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:20:18,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:20:18,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:20:18,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141938030] [2021-11-23 12:20:18,497 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:20:18,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399329484] [2021-11-23 12:20:18,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399329484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:20:18,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:20:18,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:20:18,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577913533] [2021-11-23 12:20:18,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:20:18,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:20:18,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:20:18,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:20:18,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:20:18,500 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-23 12:20:18,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:20:18,651 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2021-11-23 12:20:18,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:20:18,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2021-11-23 12:20:18,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:20:18,660 INFO L225 Difference]: With dead ends: 81 [2021-11-23 12:20:18,660 INFO L226 Difference]: Without dead ends: 58 [2021-11-23 12:20:18,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:20:18,663 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 21 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:20:18,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 75 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:20:18,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-23 12:20:18,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2021-11-23 12:20:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.1875) internal successors, (57), 52 states have internal predecessors, (57), 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) [2021-11-23 12:20:18,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-11-23 12:20:18,701 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 15 [2021-11-23 12:20:18,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:20:18,702 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-11-23 12:20:18,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-23 12:20:18,702 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-11-23 12:20:18,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 12:20:18,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:20:18,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:20:18,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:20:18,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:20:18,928 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:20:18,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:20:18,929 INFO L85 PathProgramCache]: Analyzing trace with hash -728173713, now seen corresponding path program 1 times [2021-11-23 12:20:18,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:20:18,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345976733] [2021-11-23 12:20:18,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:20:18,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:20:18,953 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:20:18,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194755665] [2021-11-23 12:20:18,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:20:18,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:20:18,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:20:18,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:20:18,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 12:20:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:20:19,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 12:20:19,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:20:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:20:19,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:20:19,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:20:19,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345976733] [2021-11-23 12:20:19,471 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:20:19,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194755665] [2021-11-23 12:20:19,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194755665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:20:19,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:20:19,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:20:19,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792183614] [2021-11-23 12:20:19,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:20:19,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:20:19,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:20:19,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:20:19,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:20:19,481 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-11-23 12:20:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:20:19,742 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2021-11-23 12:20:19,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:20:19,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 19 [2021-11-23 12:20:19,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:20:19,744 INFO L225 Difference]: With dead ends: 57 [2021-11-23 12:20:19,744 INFO L226 Difference]: Without dead ends: 45 [2021-11-23 12:20:19,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-23 12:20:19,747 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 61 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:20:19,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 101 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:20:19,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-23 12:20:19,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-23 12:20:19,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.175) internal successors, (47), 44 states have internal predecessors, (47), 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) [2021-11-23 12:20:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2021-11-23 12:20:19,757 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 19 [2021-11-23 12:20:19,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:20:19,757 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2021-11-23 12:20:19,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-11-23 12:20:19,758 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2021-11-23 12:20:19,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 12:20:19,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:20:19,759 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:20:19,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:20:19,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:20:19,960 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:20:19,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:20:19,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1856407294, now seen corresponding path program 1 times [2021-11-23 12:20:19,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:20:19,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629144382] [2021-11-23 12:20:19,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:20:19,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:20:19,976 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:20:19,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070521074] [2021-11-23 12:20:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:20:19,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:20:19,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:20:19,978 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:20:19,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 12:20:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:20:20,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 12:20:20,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:20:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:20:20,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:20:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 12:20:20,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:20:20,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629144382] [2021-11-23 12:20:20,370 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:20:20,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070521074] [2021-11-23 12:20:20,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070521074] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:20:20,371 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:20:20,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-11-23 12:20:20,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802423356] [2021-11-23 12:20:20,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:20:20,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:20:20,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:20:20,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:20:20,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:20:20,377 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 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) [2021-11-23 12:20:20,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:20:20,564 INFO L93 Difference]: Finished difference Result 105 states and 118 transitions. [2021-11-23 12:20:20,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:20:20,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 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) Word has length 23 [2021-11-23 12:20:20,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:20:20,567 INFO L225 Difference]: With dead ends: 105 [2021-11-23 12:20:20,567 INFO L226 Difference]: Without dead ends: 82 [2021-11-23 12:20:20,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:20:20,569 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 50 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:20:20,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 108 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:20:20,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-23 12:20:20,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 72. [2021-11-23 12:20:20,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 71 states have internal predecessors, (80), 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) [2021-11-23 12:20:20,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2021-11-23 12:20:20,584 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 23 [2021-11-23 12:20:20,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:20:20,585 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2021-11-23 12:20:20,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 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) [2021-11-23 12:20:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2021-11-23 12:20:20,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 12:20:20,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:20:20,587 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:20:20,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:20:20,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 12:20:20,796 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:20:20,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:20:20,797 INFO L85 PathProgramCache]: Analyzing trace with hash -284290062, now seen corresponding path program 1 times [2021-11-23 12:20:20,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:20:20,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54690379] [2021-11-23 12:20:20,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:20:20,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:20:20,818 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:20:20,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783318522] [2021-11-23 12:20:20,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:20:20,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:20:20,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:20:20,820 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:20:20,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 12:20:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:20:20,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 12:20:20,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:20:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:20:21,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:20:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:20:21,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:20:21,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54690379] [2021-11-23 12:20:21,791 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:20:21,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783318522] [2021-11-23 12:20:21,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783318522] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:20:21,792 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:20:21,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2021-11-23 12:20:21,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386197320] [2021-11-23 12:20:21,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:20:21,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 12:20:21,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:20:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 12:20:21,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-23 12:20:21,795 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 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) [2021-11-23 12:20:22,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:20:22,211 INFO L93 Difference]: Finished difference Result 121 states and 130 transitions. [2021-11-23 12:20:22,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 12:20:22,212 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 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 27 [2021-11-23 12:20:22,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:20:22,213 INFO L225 Difference]: With dead ends: 121 [2021-11-23 12:20:22,213 INFO L226 Difference]: Without dead ends: 109 [2021-11-23 12:20:22,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2021-11-23 12:20:22,215 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 172 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:20:22,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 152 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:20:22,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-23 12:20:22,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 79. [2021-11-23 12:20:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 75 states have (on average 1.16) internal successors, (87), 78 states have internal predecessors, (87), 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) [2021-11-23 12:20:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2021-11-23 12:20:22,231 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 27 [2021-11-23 12:20:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:20:22,231 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2021-11-23 12:20:22,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 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) [2021-11-23 12:20:22,232 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2021-11-23 12:20:22,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 12:20:22,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:20:22,233 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:20:22,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:20:22,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:20:22,448 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:20:22,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:20:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1121458074, now seen corresponding path program 1 times [2021-11-23 12:20:22,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:20:22,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868697504] [2021-11-23 12:20:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:20:22,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:20:22,461 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:20:22,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841659451] [2021-11-23 12:20:22,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:20:22,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:20:22,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:20:22,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:20:22,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 12:20:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:20:22,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 12:20:22,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:20:23,464 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:20:23,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:21:09,517 WARN L227 SmtUtils]: Spent 28.56s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:22:45,908 WARN L227 SmtUtils]: Spent 39.98s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:24:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:57,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:57,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868697504] [2021-11-23 12:24:57,862 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:24:57,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841659451] [2021-11-23 12:24:57,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841659451] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:24:57,862 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:24:57,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-11-23 12:24:57,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193133772] [2021-11-23 12:24:57,863 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:24:57,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 12:24:57,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:57,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 12:24:57,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=200, Unknown=1, NotChecked=0, Total=272 [2021-11-23 12:24:57,865 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 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) [2021-11-23 12:25:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:25:24,609 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2021-11-23 12:25:24,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 12:25:24,610 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 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 34 [2021-11-23 12:25:24,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:25:24,611 INFO L225 Difference]: With dead ends: 150 [2021-11-23 12:25:24,611 INFO L226 Difference]: Without dead ends: 146 [2021-11-23 12:25:24,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 94.1s TimeCoverageRelationStatistics Valid=287, Invalid=902, Unknown=1, NotChecked=0, Total=1190 [2021-11-23 12:25:24,613 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 230 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:25:24,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 176 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 12:25:24,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-23 12:25:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 84. [2021-11-23 12:25:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 1.15) internal successors, (92), 83 states have internal predecessors, (92), 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) [2021-11-23 12:25:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2021-11-23 12:25:24,631 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 34 [2021-11-23 12:25:24,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:25:24,631 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2021-11-23 12:25:24,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 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) [2021-11-23 12:25:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2021-11-23 12:25:24,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 12:25:24,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:25:24,634 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:24,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 12:25:24,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:25:24,856 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:25:24,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:24,857 INFO L85 PathProgramCache]: Analyzing trace with hash 938986604, now seen corresponding path program 1 times [2021-11-23 12:25:24,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:24,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672846309] [2021-11-23 12:25:24,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:24,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:24,874 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:25:24,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113705454] [2021-11-23 12:25:24,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:24,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:25:24,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:25:24,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:25:24,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 12:25:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:24,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 12:25:24,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:25:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:27,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:25:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:48,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:48,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672846309] [2021-11-23 12:25:48,289 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:25:48,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113705454] [2021-11-23 12:25:48,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113705454] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:25:48,290 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:25:48,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-11-23 12:25:48,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084293382] [2021-11-23 12:25:48,290 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:25:48,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-23 12:25:48,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:48,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-23 12:25:48,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-11-23 12:25:48,292 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 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) [2021-11-23 12:26:32,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:26:32,969 INFO L93 Difference]: Finished difference Result 179 states and 194 transitions. [2021-11-23 12:26:32,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-23 12:26:32,969 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 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 40 [2021-11-23 12:26:32,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:26:32,972 INFO L225 Difference]: With dead ends: 179 [2021-11-23 12:26:32,972 INFO L226 Difference]: Without dead ends: 156 [2021-11-23 12:26:32,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 48.1s TimeCoverageRelationStatistics Valid=808, Invalid=2272, Unknown=0, NotChecked=0, Total=3080 [2021-11-23 12:26:32,975 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 424 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:26:32,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 244 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-23 12:26:32,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-23 12:26:32,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 108. [2021-11-23 12:26:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 104 states have (on average 1.1442307692307692) internal successors, (119), 107 states have internal predecessors, (119), 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) [2021-11-23 12:26:33,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2021-11-23 12:26:33,000 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 40 [2021-11-23 12:26:33,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:26:33,001 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2021-11-23 12:26:33,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 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) [2021-11-23 12:26:33,001 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2021-11-23 12:26:33,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 12:26:33,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:26:33,003 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:26:33,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 12:26:33,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 12:26:33,229 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:26:33,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:26:33,229 INFO L85 PathProgramCache]: Analyzing trace with hash 519572999, now seen corresponding path program 1 times [2021-11-23 12:26:33,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:26:33,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609217247] [2021-11-23 12:26:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:26:33,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:26:33,257 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:26:33,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015761346] [2021-11-23 12:26:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:26:33,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:26:33,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:26:33,267 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:26:33,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 12:26:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:26:33,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:26:33,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:26:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:26:33,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:26:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:26:33,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:26:33,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609217247] [2021-11-23 12:26:33,794 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:26:33,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015761346] [2021-11-23 12:26:33,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015761346] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:26:33,795 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:26:33,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-11-23 12:26:33,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384679255] [2021-11-23 12:26:33,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:26:33,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:26:33,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:26:33,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:26:33,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:26:33,797 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2021-11-23 12:26:33,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:26:33,863 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2021-11-23 12:26:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:26:33,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 48 [2021-11-23 12:26:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:26:33,865 INFO L225 Difference]: With dead ends: 118 [2021-11-23 12:26:33,865 INFO L226 Difference]: Without dead ends: 108 [2021-11-23 12:26:33,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:26:33,867 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 32 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:26:33,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 88 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:26:33,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-23 12:26:33,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 71. [2021-11-23 12:26:33,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 70 states have internal predecessors, (77), 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) [2021-11-23 12:26:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2021-11-23 12:26:33,882 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 48 [2021-11-23 12:26:33,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:26:33,883 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2021-11-23 12:26:33,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2021-11-23 12:26:33,883 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2021-11-23 12:26:33,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 12:26:33,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:26:33,885 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:26:33,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-23 12:26:34,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 12:26:34,099 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:26:34,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:26:34,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1071507273, now seen corresponding path program 1 times [2021-11-23 12:26:34,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:26:34,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041858464] [2021-11-23 12:26:34,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:26:34,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:26:34,109 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:26:34,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784312592] [2021-11-23 12:26:34,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:26:34,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:26:34,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:26:34,111 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:26:34,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 12:26:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:26:34,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:26:34,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:26:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 12:26:34,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:26:34,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:26:34,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041858464] [2021-11-23 12:26:34,442 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:26:34,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784312592] [2021-11-23 12:26:34,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784312592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:26:34,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:26:34,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:26:34,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287852969] [2021-11-23 12:26:34,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:26:34,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:26:34,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:26:34,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:26:34,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:26:34,445 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2021-11-23 12:26:34,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:26:34,582 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2021-11-23 12:26:34,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:26:34,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 49 [2021-11-23 12:26:34,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:26:34,584 INFO L225 Difference]: With dead ends: 103 [2021-11-23 12:26:34,584 INFO L226 Difference]: Without dead ends: 71 [2021-11-23 12:26:34,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:26:34,586 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:26:34,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 74 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:26:34,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-23 12:26:34,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-23 12:26:34,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.1343283582089552) internal successors, (76), 70 states have internal predecessors, (76), 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) [2021-11-23 12:26:34,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2021-11-23 12:26:34,601 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 49 [2021-11-23 12:26:34,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:26:34,602 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2021-11-23 12:26:34,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2021-11-23 12:26:34,602 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2021-11-23 12:26:34,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 12:26:34,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:26:34,604 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:26:34,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-23 12:26:34,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 12:26:34,824 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:26:34,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:26:34,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1772571851, now seen corresponding path program 2 times [2021-11-23 12:26:34,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:26:34,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652100081] [2021-11-23 12:26:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:26:34,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:26:34,835 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:26:34,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589768090] [2021-11-23 12:26:34,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:26:34,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:26:34,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:26:34,839 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:26:34,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f91d9c7-889e-4538-a829-be4f0ca5120c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 12:26:35,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:26:35,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:26:35,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-23 12:26:35,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:26:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:26:36,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:26:57,724 WARN L227 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:27:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:27:49,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:27:49,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652100081] [2021-11-23 12:27:49,531 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:27:49,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589768090] [2021-11-23 12:27:49,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589768090] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:27:49,532 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:27:49,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2021-11-23 12:27:49,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997792521] [2021-11-23 12:27:49,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:27:49,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:27:49,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:27:49,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:27:49,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:27:49,533 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 26 states, 26 states have (on average 3.6538461538461537) internal successors, (95), 26 states have internal predecessors, (95), 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) [2021-11-23 12:28:45,949 WARN L227 SmtUtils]: Spent 52.99s on a formula simplification. DAG size of input: 180 DAG size of output: 94 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:29:34,555 WARN L227 SmtUtils]: Spent 47.36s on a formula simplification. DAG size of input: 178 DAG size of output: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:30:02,674 WARN L227 SmtUtils]: Spent 26.26s on a formula simplification. DAG size of input: 176 DAG size of output: 78 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:30:20,688 WARN L227 SmtUtils]: Spent 16.50s on a formula simplification. DAG size of input: 74 DAG size of output: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:30:28,368 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 93 DAG size of output: 64 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:30:41,305 WARN L227 SmtUtils]: Spent 12.12s on a formula simplification. DAG size of input: 95 DAG size of output: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:31:04,255 WARN L227 SmtUtils]: Spent 21.00s on a formula simplification. DAG size of input: 174 DAG size of output: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:31:35,023 WARN L227 SmtUtils]: Spent 30.22s on a formula simplification. DAG size of input: 189 DAG size of output: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:31:42,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 12:32:12,600 WARN L227 SmtUtils]: Spent 29.03s on a formula simplification. DAG size of input: 158 DAG size of output: 149 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:32:15,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 12:32:44,285 WARN L227 SmtUtils]: Spent 27.92s on a formula simplification. DAG size of input: 161 DAG size of output: 152 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:33:07,987 WARN L227 SmtUtils]: Spent 16.96s on a formula simplification. DAG size of input: 153 DAG size of output: 144 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:33:28,012 WARN L227 SmtUtils]: Spent 14.32s on a formula simplification. DAG size of input: 96 DAG size of output: 73 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:33:39,368 WARN L227 SmtUtils]: Spent 9.94s on a formula simplification. DAG size of input: 74 DAG size of output: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:34:21,130 WARN L227 SmtUtils]: Spent 31.50s on a formula simplification. DAG size of input: 164 DAG size of output: 70 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)