./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa --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 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:30:39,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:30:39,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:30:39,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:30:39,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:30:39,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:30:39,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:30:39,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:30:39,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:30:39,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:30:39,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:30:39,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:30:39,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:30:39,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:30:39,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:30:39,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:30:39,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:30:39,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:30:39,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:30:39,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:30:39,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:30:39,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:30:39,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:30:39,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:30:39,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:30:39,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:30:39,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:30:39,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:30:39,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:30:39,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:30:39,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:30:39,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:30:39,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:30:39,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:30:39,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:30:39,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:30:39,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:30:39,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:30:39,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:30:39,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:30:39,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:30:39,104 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:30:39,128 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:30:39,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:30:39,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:30:39,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:30:39,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:30:39,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:30:39,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:30:39,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:30:39,131 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:30:39,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:30:39,131 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:30:39,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:30:39,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:30:39,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:30:39,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:30:39,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:30:39,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:30:39,133 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:30:39,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:30:39,133 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:30:39,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:30:39,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:30:39,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:30:39,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:30:39,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:30:39,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:30:39,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:30:39,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:30:39,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:30:39,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:30:39,135 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:30:39,135 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:30:39,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:30:39,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:30:39,136 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_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 [2021-12-06 17:30:39,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:30:39,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:30:39,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:30:39,347 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:30:39,347 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:30:39,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2021-12-06 17:30:39,393 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/data/666a4fd8e/0cba5f3de2374175ab3a8d7230dc1d4d/FLAGaa6b103ae [2021-12-06 17:30:39,754 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:30:39,755 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2021-12-06 17:30:39,759 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/data/666a4fd8e/0cba5f3de2374175ab3a8d7230dc1d4d/FLAGaa6b103ae [2021-12-06 17:30:39,769 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/data/666a4fd8e/0cba5f3de2374175ab3a8d7230dc1d4d [2021-12-06 17:30:39,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:30:39,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:30:39,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:30:39,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:30:39,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:30:39,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:30:39" (1/1) ... [2021-12-06 17:30:39,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce27ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:30:39, skipping insertion in model container [2021-12-06 17:30:39,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:30:39" (1/1) ... [2021-12-06 17:30:39,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:30:39,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:30:39,904 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_6e39e48a-1810-44d4-84f4-4058df1e4adc/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2021-12-06 17:30:39,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:30:39,928 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:30:39,937 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_6e39e48a-1810-44d4-84f4-4058df1e4adc/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2021-12-06 17:30:39,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:30:39,957 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:30:39,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:30:39 WrapperNode [2021-12-06 17:30:39,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:30:39,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:30:39,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:30:39,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:30:39,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:30:39" (1/1) ... [2021-12-06 17:30:39,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:30:39" (1/1) ... [2021-12-06 17:30:39,985 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2021-12-06 17:30:39,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:30:39,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:30:39,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:30:39,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:30:39,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:30:39" (1/1) ... [2021-12-06 17:30:39,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:30:39" (1/1) ... [2021-12-06 17:30:39,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:30:39" (1/1) ... [2021-12-06 17:30:39,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:30:39" (1/1) ... [2021-12-06 17:30:39,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:30:39" (1/1) ... [2021-12-06 17:30:40,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:30:39" (1/1) ... [2021-12-06 17:30:40,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:30:39" (1/1) ... [2021-12-06 17:30:40,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:30:40,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:30:40,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:30:40,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:30:40,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:30:39" (1/1) ... [2021-12-06 17:30:40,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:30:40,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:30:40,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:30:40,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:30:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:30:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 17:30:40,066 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 17:30:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:30:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:30:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:30:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 17:30:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 17:30:40,120 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:30:40,122 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:30:40,224 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:30:40,230 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:30:40,231 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 17:30:40,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:30:40 BoogieIcfgContainer [2021-12-06 17:30:40,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:30:40,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:30:40,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:30:40,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:30:40,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:30:39" (1/3) ... [2021-12-06 17:30:40,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4adbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:30:40, skipping insertion in model container [2021-12-06 17:30:40,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:30:39" (2/3) ... [2021-12-06 17:30:40,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4adbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:30:40, skipping insertion in model container [2021-12-06 17:30:40,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:30:40" (3/3) ... [2021-12-06 17:30:40,241 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound2.c [2021-12-06 17:30:40,246 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:30:40,246 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:30:40,294 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:30:40,302 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 [2021-12-06 17:30:40,302 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:30:40,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 17:30:40,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 17:30:40,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:30:40,325 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:30:40,325 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:30:40,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:30:40,330 INFO L85 PathProgramCache]: Analyzing trace with hash -487550744, now seen corresponding path program 1 times [2021-12-06 17:30:40,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:30:40,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995229138] [2021-12-06 17:30:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:30:40,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:30:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:40,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:30:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:40,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:30:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:40,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:30:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:30:40,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:30:40,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995229138] [2021-12-06 17:30:40,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995229138] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:30:40,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:30:40,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:30:40,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732549470] [2021-12-06 17:30:40,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:30:40,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:30:40,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:30:40,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:30:40,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:30:40,511 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:30:40,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:30:40,531 INFO L93 Difference]: Finished difference Result 63 states and 104 transitions. [2021-12-06 17:30:40,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:30:40,532 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-12-06 17:30:40,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:30:40,539 INFO L225 Difference]: With dead ends: 63 [2021-12-06 17:30:40,539 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 17:30:40,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:30:40,547 INFO L933 BasicCegarLoop]: 43 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, 43 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 [2021-12-06 17:30:40,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:30:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 17:30:40,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-06 17:30:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 17:30:40,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2021-12-06 17:30:40,588 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2021-12-06 17:30:40,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:30:40,589 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2021-12-06 17:30:40,589 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:30:40,589 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2021-12-06 17:30:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 17:30:40,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:30:40,591 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:30:40,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:30:40,592 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:30:40,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:30:40,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1636258074, now seen corresponding path program 1 times [2021-12-06 17:30:40,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:30:40,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709530692] [2021-12-06 17:30:40,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:30:40,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:30:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:40,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:30:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:30:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:40,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:30:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:30:40,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:30:40,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709530692] [2021-12-06 17:30:40,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709530692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:30:40,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:30:40,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:30:40,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582396304] [2021-12-06 17:30:40,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:30:40,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:30:40,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:30:40,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:30:40,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:30:40,703 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:30:40,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:30:40,741 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2021-12-06 17:30:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:30:40,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2021-12-06 17:30:40,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:30:40,743 INFO L225 Difference]: With dead ends: 42 [2021-12-06 17:30:40,743 INFO L226 Difference]: Without dead ends: 40 [2021-12-06 17:30:40,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:30:40,745 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:30:40,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 134 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:30:40,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-06 17:30:40,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2021-12-06 17:30:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 17:30:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2021-12-06 17:30:40,754 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 24 [2021-12-06 17:30:40,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:30:40,754 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2021-12-06 17:30:40,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:30:40,755 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2021-12-06 17:30:40,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 17:30:40,755 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:30:40,755 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:30:40,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:30:40,756 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:30:40,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:30:40,756 INFO L85 PathProgramCache]: Analyzing trace with hash 906849917, now seen corresponding path program 1 times [2021-12-06 17:30:40,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:30:40,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173365791] [2021-12-06 17:30:40,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:30:40,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:30:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:40,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:30:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:40,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:30:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:40,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:30:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:40,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:30:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:30:40,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:30:40,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173365791] [2021-12-06 17:30:40,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173365791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:30:40,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:30:40,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:30:40,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714783075] [2021-12-06 17:30:40,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:30:40,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:30:40,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:30:40,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:30:40,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:30:40,830 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:30:40,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:30:40,869 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2021-12-06 17:30:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:30:40,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-12-06 17:30:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:30:40,870 INFO L225 Difference]: With dead ends: 46 [2021-12-06 17:30:40,870 INFO L226 Difference]: Without dead ends: 44 [2021-12-06 17:30:40,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:30:40,872 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:30:40,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 130 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:30:40,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-06 17:30:40,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2021-12-06 17:30:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 17:30:40,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2021-12-06 17:30:40,879 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2021-12-06 17:30:40,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:30:40,879 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2021-12-06 17:30:40,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:30:40,879 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2021-12-06 17:30:40,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 17:30:40,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:30:40,880 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:30:40,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:30:40,881 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:30:40,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:30:40,881 INFO L85 PathProgramCache]: Analyzing trace with hash 710995206, now seen corresponding path program 1 times [2021-12-06 17:30:40,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:30:40,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279198227] [2021-12-06 17:30:40,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:30:40,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:30:40,892 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:30:40,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715895700] [2021-12-06 17:30:40,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:30:40,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:30:40,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:30:40,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:30:40,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:30:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:40,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:30:40,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:30:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 17:30:41,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:30:41,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:30:41,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279198227] [2021-12-06 17:30:41,035 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:30:41,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715895700] [2021-12-06 17:30:41,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715895700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:30:41,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:30:41,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:30:41,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178397261] [2021-12-06 17:30:41,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:30:41,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:30:41,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:30:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:30:41,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:30:41,038 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:30:41,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:30:41,084 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2021-12-06 17:30:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:30:41,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2021-12-06 17:30:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:30:41,085 INFO L225 Difference]: With dead ends: 65 [2021-12-06 17:30:41,085 INFO L226 Difference]: Without dead ends: 51 [2021-12-06 17:30:41,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:30:41,090 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:30:41,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 141 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:30:41,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-06 17:30:41,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-12-06 17:30:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-06 17:30:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2021-12-06 17:30:41,101 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 34 [2021-12-06 17:30:41,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:30:41,101 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2021-12-06 17:30:41,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:30:41,102 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2021-12-06 17:30:41,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 17:30:41,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:30:41,103 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:30:41,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:30:41,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:30:41,304 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:30:41,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:30:41,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1829555286, now seen corresponding path program 1 times [2021-12-06 17:30:41,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:30:41,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108516498] [2021-12-06 17:30:41,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:30:41,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:30:41,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:30:41,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638941682] [2021-12-06 17:30:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:30:41,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:30:41,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:30:41,316 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:30:41,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:30:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:41,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 17:30:41,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:30:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:30:41,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:30:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 17:30:41,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:30:41,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108516498] [2021-12-06 17:30:41,676 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:30:41,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638941682] [2021-12-06 17:30:41,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638941682] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 17:30:41,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:30:41,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2021-12-06 17:30:41,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146770427] [2021-12-06 17:30:41,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:30:41,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:30:41,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:30:41,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:30:41,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:30:41,679 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 17:30:41,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:30:41,729 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2021-12-06 17:30:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:30:41,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2021-12-06 17:30:41,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:30:41,731 INFO L225 Difference]: With dead ends: 64 [2021-12-06 17:30:41,731 INFO L226 Difference]: Without dead ends: 62 [2021-12-06 17:30:41,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:30:41,732 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:30:41,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 158 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:30:41,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-06 17:30:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2021-12-06 17:30:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 17:30:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2021-12-06 17:30:41,741 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 41 [2021-12-06 17:30:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:30:41,741 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2021-12-06 17:30:41,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 17:30:41,741 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2021-12-06 17:30:41,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 17:30:41,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:30:41,742 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:30:41,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 17:30:41,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:30:41,944 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:30:41,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:30:41,946 INFO L85 PathProgramCache]: Analyzing trace with hash 105343995, now seen corresponding path program 1 times [2021-12-06 17:30:41,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:30:41,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491974517] [2021-12-06 17:30:41,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:30:41,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:30:41,980 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:30:41,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676523524] [2021-12-06 17:30:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:30:41,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:30:41,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:30:41,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:30:41,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:30:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:42,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 17:30:42,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:30:42,224 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-06 17:30:42,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:30:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-06 17:30:42,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:30:42,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491974517] [2021-12-06 17:30:42,302 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:30:42,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676523524] [2021-12-06 17:30:42,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676523524] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 17:30:42,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:30:42,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2021-12-06 17:30:42,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360682891] [2021-12-06 17:30:42,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:30:42,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:30:42,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:30:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:30:42,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:30:42,304 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 17:30:42,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:30:42,464 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2021-12-06 17:30:42,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:30:42,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-12-06 17:30:42,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:30:42,465 INFO L225 Difference]: With dead ends: 72 [2021-12-06 17:30:42,465 INFO L226 Difference]: Without dead ends: 70 [2021-12-06 17:30:42,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:30:42,466 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:30:42,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 125 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:30:42,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-06 17:30:42,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2021-12-06 17:30:42,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 42 states have internal predecessors, (46), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-06 17:30:42,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 84 transitions. [2021-12-06 17:30:42,478 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 84 transitions. Word has length 51 [2021-12-06 17:30:42,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:30:42,478 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 84 transitions. [2021-12-06 17:30:42,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 17:30:42,479 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 84 transitions. [2021-12-06 17:30:42,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 17:30:42,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:30:42,480 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:30:42,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 17:30:42,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:30:42,682 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:30:42,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:30:42,683 INFO L85 PathProgramCache]: Analyzing trace with hash 957489548, now seen corresponding path program 1 times [2021-12-06 17:30:42,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:30:42,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376609998] [2021-12-06 17:30:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:30:42,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:30:42,717 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:30:42,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722536045] [2021-12-06 17:30:42,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:30:42,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:30:42,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:30:42,718 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:30:42,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 17:30:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:42,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:30:42,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:30:42,820 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-06 17:30:42,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:30:42,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:30:42,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376609998] [2021-12-06 17:30:42,821 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:30:42,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722536045] [2021-12-06 17:30:42,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722536045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:30:42,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:30:42,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:30:42,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605799076] [2021-12-06 17:30:42,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:30:42,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:30:42,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:30:42,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:30:42,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:30:42,822 INFO L87 Difference]: Start difference. First operand 67 states and 84 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 17:30:42,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:30:42,864 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2021-12-06 17:30:42,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:30:42,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2021-12-06 17:30:42,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:30:42,866 INFO L225 Difference]: With dead ends: 75 [2021-12-06 17:30:42,866 INFO L226 Difference]: Without dead ends: 68 [2021-12-06 17:30:42,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:30:42,867 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:30:42,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 116 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:30:42,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-06 17:30:42,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2021-12-06 17:30:42,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 40 states have (on average 1.15) internal successors, (46), 43 states have internal predecessors, (46), 18 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-06 17:30:42,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2021-12-06 17:30:42,878 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 52 [2021-12-06 17:30:42,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:30:42,878 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2021-12-06 17:30:42,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 17:30:42,878 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2021-12-06 17:30:42,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-06 17:30:42,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:30:42,879 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:30:42,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 17:30:43,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 17:30:43,081 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:30:43,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:30:43,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1754894755, now seen corresponding path program 1 times [2021-12-06 17:30:43,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:30:43,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51777007] [2021-12-06 17:30:43,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:30:43,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:30:43,113 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:30:43,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765765768] [2021-12-06 17:30:43,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:30:43,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:30:43,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:30:43,116 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:30:43,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 17:30:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:30:43,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 17:30:43,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:30:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-06 17:30:43,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:30:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-06 17:30:49,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:30:49,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51777007] [2021-12-06 17:30:49,762 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:30:49,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765765768] [2021-12-06 17:30:49,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765765768] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:30:49,762 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:30:49,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2021-12-06 17:30:49,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683230828] [2021-12-06 17:30:49,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:30:49,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 17:30:49,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:30:49,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 17:30:49,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:30:49,763 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 10 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-06 17:30:59,776 WARN L227 SmtUtils]: Spent 9.41s on a formula simplification. DAG size of input: 52 DAG size of output: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:31:06,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:06,464 INFO L93 Difference]: Finished difference Result 164 states and 225 transitions. [2021-12-06 17:31:06,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 17:31:06,465 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 10 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 71 [2021-12-06 17:31:06,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:06,467 INFO L225 Difference]: With dead ends: 164 [2021-12-06 17:31:06,467 INFO L226 Difference]: Without dead ends: 137 [2021-12-06 17:31:06,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2021-12-06 17:31:06,469 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 90 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:06,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 345 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-06 17:31:06,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-06 17:31:06,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 102. [2021-12-06 17:31:06,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 61 states have (on average 1.180327868852459) internal successors, (72), 65 states have internal predecessors, (72), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-06 17:31:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 129 transitions. [2021-12-06 17:31:06,483 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 129 transitions. Word has length 71 [2021-12-06 17:31:06,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:06,483 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 129 transitions. [2021-12-06 17:31:06,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 10 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-06 17:31:06,484 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 129 transitions. [2021-12-06 17:31:06,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-06 17:31:06,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:06,485 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:31:06,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 17:31:06,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 17:31:06,686 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:31:06,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:06,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1620227847, now seen corresponding path program 1 times [2021-12-06 17:31:06,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:06,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072531676] [2021-12-06 17:31:06,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:06,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:06,717 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:06,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041139729] [2021-12-06 17:31:06,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:06,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:06,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:06,720 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:06,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 17:31:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:06,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 17:31:06,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-12-06 17:31:07,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:31:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-12-06 17:31:09,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:09,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072531676] [2021-12-06 17:31:09,586 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:09,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041139729] [2021-12-06 17:31:09,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041139729] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:31:09,586 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:31:09,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-12-06 17:31:09,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294447621] [2021-12-06 17:31:09,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:31:09,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 17:31:09,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:09,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 17:31:09,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:31:09,588 INFO L87 Difference]: Start difference. First operand 102 states and 129 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 11 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2021-12-06 17:31:10,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:10,444 INFO L93 Difference]: Finished difference Result 142 states and 177 transitions. [2021-12-06 17:31:10,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:31:10,444 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 11 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 82 [2021-12-06 17:31:10,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:10,445 INFO L225 Difference]: With dead ends: 142 [2021-12-06 17:31:10,445 INFO L226 Difference]: Without dead ends: 108 [2021-12-06 17:31:10,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:31:10,446 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 21 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:10,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 307 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:31:10,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-06 17:31:10,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2021-12-06 17:31:10,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 59 states have internal predecessors, (66), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-06 17:31:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 115 transitions. [2021-12-06 17:31:10,457 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 115 transitions. Word has length 82 [2021-12-06 17:31:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:10,457 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 115 transitions. [2021-12-06 17:31:10,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 11 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2021-12-06 17:31:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 115 transitions. [2021-12-06 17:31:10,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-06 17:31:10,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:10,458 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 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] [2021-12-06 17:31:10,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 17:31:10,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:10,660 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:31:10,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:10,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1888027627, now seen corresponding path program 2 times [2021-12-06 17:31:10,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:10,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141312594] [2021-12-06 17:31:10,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:10,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:10,689 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:10,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513136632] [2021-12-06 17:31:10,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:31:10,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:10,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:10,692 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:10,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 17:31:10,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:31:10,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:31:10,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:31:10,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-12-06 17:31:10,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:31:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-12-06 17:31:10,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:10,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141312594] [2021-12-06 17:31:10,942 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:10,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513136632] [2021-12-06 17:31:10,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513136632] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:31:10,942 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:31:10,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-12-06 17:31:10,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060101930] [2021-12-06 17:31:10,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:31:10,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:31:10,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:10,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:31:10,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:31:10,944 INFO L87 Difference]: Start difference. First operand 94 states and 115 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-06 17:31:11,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:11,005 INFO L93 Difference]: Finished difference Result 121 states and 152 transitions. [2021-12-06 17:31:11,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:31:11,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 84 [2021-12-06 17:31:11,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:11,007 INFO L225 Difference]: With dead ends: 121 [2021-12-06 17:31:11,007 INFO L226 Difference]: Without dead ends: 99 [2021-12-06 17:31:11,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:31:11,008 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 1 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:11,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 127 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:31:11,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-06 17:31:11,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-12-06 17:31:11,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 60 states have (on average 1.15) internal successors, (69), 62 states have internal predecessors, (69), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-06 17:31:11,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 122 transitions. [2021-12-06 17:31:11,017 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 122 transitions. Word has length 84 [2021-12-06 17:31:11,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:11,018 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 122 transitions. [2021-12-06 17:31:11,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-06 17:31:11,018 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 122 transitions. [2021-12-06 17:31:11,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-06 17:31:11,019 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:11,019 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:31:11,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-06 17:31:11,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 17:31:11,221 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:31:11,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:11,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1729716470, now seen corresponding path program 1 times [2021-12-06 17:31:11,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:11,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766415915] [2021-12-06 17:31:11,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:11,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:11,249 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:11,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637081510] [2021-12-06 17:31:11,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:11,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:11,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:11,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:11,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 17:31:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:11,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 17:31:11,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-12-06 17:31:11,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:31:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-12-06 17:31:11,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:11,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766415915] [2021-12-06 17:31:11,725 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:11,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637081510] [2021-12-06 17:31:11,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637081510] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:31:11,725 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:31:11,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-12-06 17:31:11,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388622267] [2021-12-06 17:31:11,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:31:11,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:31:11,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:11,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:31:11,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:31:11,727 INFO L87 Difference]: Start difference. First operand 99 states and 122 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 8 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2021-12-06 17:31:11,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:11,877 INFO L93 Difference]: Finished difference Result 107 states and 130 transitions. [2021-12-06 17:31:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:31:11,877 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 8 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) Word has length 87 [2021-12-06 17:31:11,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:11,878 INFO L225 Difference]: With dead ends: 107 [2021-12-06 17:31:11,878 INFO L226 Difference]: Without dead ends: 90 [2021-12-06 17:31:11,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:31:11,879 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 10 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:11,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 259 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:31:11,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-06 17:31:11,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-12-06 17:31:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 57 states have internal predecessors, (63), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-06 17:31:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2021-12-06 17:31:11,888 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 87 [2021-12-06 17:31:11,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:11,888 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2021-12-06 17:31:11,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 8 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2021-12-06 17:31:11,888 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2021-12-06 17:31:11,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 17:31:11,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:11,889 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:31:11,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 17:31:12,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:12,091 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:31:12,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:12,093 INFO L85 PathProgramCache]: Analyzing trace with hash -219918921, now seen corresponding path program 1 times [2021-12-06 17:31:12,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:12,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843207812] [2021-12-06 17:31:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:12,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:12,119 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:12,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934385744] [2021-12-06 17:31:12,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:12,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:12,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:12,124 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:12,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 17:31:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:12,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:31:12,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-12-06 17:31:12,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:31:12,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:12,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843207812] [2021-12-06 17:31:12,313 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:12,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934385744] [2021-12-06 17:31:12,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934385744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:31:12,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:31:12,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:31:12,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006378060] [2021-12-06 17:31:12,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:31:12,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:31:12,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:12,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:31:12,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:31:12,315 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-06 17:31:12,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:12,355 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2021-12-06 17:31:12,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:31:12,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 91 [2021-12-06 17:31:12,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:12,357 INFO L225 Difference]: With dead ends: 97 [2021-12-06 17:31:12,357 INFO L226 Difference]: Without dead ends: 85 [2021-12-06 17:31:12,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:31:12,357 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:12,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 87 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:31:12,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-06 17:31:12,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-12-06 17:31:12,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-06 17:31:12,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2021-12-06 17:31:12,365 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 91 [2021-12-06 17:31:12,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:12,365 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2021-12-06 17:31:12,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-06 17:31:12,366 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2021-12-06 17:31:12,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 17:31:12,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:12,367 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 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] [2021-12-06 17:31:12,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 17:31:12,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:12,567 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:31:12,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:12,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2103086134, now seen corresponding path program 3 times [2021-12-06 17:31:12,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:12,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83983649] [2021-12-06 17:31:12,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:12,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:12,574 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:12,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289622127] [2021-12-06 17:31:12,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:31:12,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:12,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:12,575 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:12,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 17:31:12,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 17:31:12,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:31:12,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 17:31:12,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 48 proven. 8 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2021-12-06 17:31:13,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:31:13,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:13,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83983649] [2021-12-06 17:31:13,902 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:13,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289622127] [2021-12-06 17:31:13,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289622127] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:31:13,902 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:31:13,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-12-06 17:31:13,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438822250] [2021-12-06 17:31:13,902 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:31:13,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:31:13,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:13,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:31:13,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:31:13,903 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 17:31:14,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:14,420 INFO L93 Difference]: Finished difference Result 144 states and 176 transitions. [2021-12-06 17:31:14,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:31:14,421 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 101 [2021-12-06 17:31:14,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:14,422 INFO L225 Difference]: With dead ends: 144 [2021-12-06 17:31:14,422 INFO L226 Difference]: Without dead ends: 92 [2021-12-06 17:31:14,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-12-06 17:31:14,423 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 38 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:14,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 279 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:31:14,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-12-06 17:31:14,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2021-12-06 17:31:14,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 54 states have internal predecessors, (58), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-06 17:31:14,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2021-12-06 17:31:14,431 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 101 [2021-12-06 17:31:14,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:14,432 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2021-12-06 17:31:14,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 17:31:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2021-12-06 17:31:14,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 17:31:14,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:14,433 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:31:14,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 17:31:14,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:14,634 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:31:14,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:14,636 INFO L85 PathProgramCache]: Analyzing trace with hash 845989083, now seen corresponding path program 1 times [2021-12-06 17:31:14,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:14,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897502360] [2021-12-06 17:31:14,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:14,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:14,647 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:14,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392705943] [2021-12-06 17:31:14,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:14,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:14,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:14,648 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:14,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 17:31:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:14,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 17:31:14,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 28 proven. 32 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-12-06 17:31:15,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:31:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 28 proven. 26 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2021-12-06 17:31:36,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:36,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897502360] [2021-12-06 17:31:36,636 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:36,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392705943] [2021-12-06 17:31:36,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392705943] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:31:36,636 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:31:36,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 23 [2021-12-06 17:31:36,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747870700] [2021-12-06 17:31:36,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:31:36,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 17:31:36,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:36,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 17:31:36,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2021-12-06 17:31:36,637 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 14 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) [2021-12-06 17:31:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:37,416 INFO L93 Difference]: Finished difference Result 110 states and 126 transitions. [2021-12-06 17:31:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:31:37,416 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 14 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) Word has length 106 [2021-12-06 17:31:37,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:37,417 INFO L225 Difference]: With dead ends: 110 [2021-12-06 17:31:37,417 INFO L226 Difference]: Without dead ends: 85 [2021-12-06 17:31:37,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2021-12-06 17:31:37,418 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 47 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:37,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 459 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 17:31:37,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-06 17:31:37,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-12-06 17:31:37,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 54 states have (on average 1.0) internal successors, (54), 54 states have internal predecessors, (54), 19 states have call successors, (19), 12 states have call predecessors, (19), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-06 17:31:37,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2021-12-06 17:31:37,427 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 106 [2021-12-06 17:31:37,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:37,427 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2021-12-06 17:31:37,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 14 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) [2021-12-06 17:31:37,428 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2021-12-06 17:31:37,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:31:37,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:37,429 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:31:37,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 17:31:37,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 17:31:37,631 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:31:37,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:37,632 INFO L85 PathProgramCache]: Analyzing trace with hash -419411602, now seen corresponding path program 1 times [2021-12-06 17:31:37,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:37,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387034741] [2021-12-06 17:31:37,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:37,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:37,645 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:37,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110578573] [2021-12-06 17:31:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:37,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:37,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:37,646 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:37,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 17:31:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:37,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 17:31:37,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 106 proven. 36 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2021-12-06 17:31:40,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:31:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2021-12-06 17:31:41,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:41,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387034741] [2021-12-06 17:31:41,176 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:41,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110578573] [2021-12-06 17:31:41,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110578573] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:31:41,176 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:31:41,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9] total 24 [2021-12-06 17:31:41,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561145455] [2021-12-06 17:31:41,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:31:41,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 17:31:41,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:41,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 17:31:41,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-12-06 17:31:41,178 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 24 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 12 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 11 states have call predecessors, (28), 10 states have call successors, (28) [2021-12-06 17:31:42,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:42,182 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2021-12-06 17:31:42,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 17:31:42,183 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 12 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 11 states have call predecessors, (28), 10 states have call successors, (28) Word has length 112 [2021-12-06 17:31:42,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:42,183 INFO L225 Difference]: With dead ends: 85 [2021-12-06 17:31:42,183 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 17:31:42,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2021-12-06 17:31:42,184 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 36 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:42,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 421 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 17:31:42,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 17:31:42,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 17:31:42,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-12-06 17:31:42,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 17:31:42,185 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2021-12-06 17:31:42,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:42,185 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 17:31:42,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 12 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 11 states have call predecessors, (28), 10 states have call successors, (28) [2021-12-06 17:31:42,186 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 17:31:42,186 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 17:31:42,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 17:31:42,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 17:31:42,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 17:31:42,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 17:31:51,668 INFO L854 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) [2021-12-06 17:31:51,668 INFO L858 garLoopResultBuilder]: For program point L48(lines 46 58) no Hoare annotation was computed. [2021-12-06 17:31:51,668 INFO L854 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (let ((.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (< 0 (+ (div (+ 2 (* |ULTIMATE.start_main_~r~0#1| (- 1))) 4294967296) 1))) (.cse4 (= (+ (* 4294967296 (div |ULTIMATE.start_main_~A~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse5 (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (or (and (< (div (div (+ .cse0 (- 2)) 2) (- 4294967296)) 1) .cse1 (= (+ (* .cse2 |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~r~0#1| (* .cse2 |ULTIMATE.start_main_~q~0#1|)) (+ |ULTIMATE.start_main_~d~0#1| (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) .cse3 .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) .cse1 (< (div (+ (- 1) |ULTIMATE.start_main_~d~0#1|) (- 4294967296)) 1) .cse3 .cse4) (and (= 2 |ULTIMATE.start_main_~p~0#1|) (= (* 2 .cse2) |ULTIMATE.start_main_~d~0#1|) .cse1 .cse3 (< (div (div (+ (- 2) |ULTIMATE.start_main_~d~0#1|) 2) (- 4294967296)) 1) .cse4 .cse5)))) [2021-12-06 17:31:51,668 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 17:31:51,668 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 17:31:51,668 INFO L858 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2021-12-06 17:31:51,668 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 17:31:51,668 INFO L854 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2) [2021-12-06 17:31:51,669 INFO L854 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2) [2021-12-06 17:31:51,669 INFO L854 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (let ((.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (< 0 (+ (div (+ 2 (* |ULTIMATE.start_main_~r~0#1| (- 1))) 4294967296) 1))) (.cse4 (= (+ (* 4294967296 (div |ULTIMATE.start_main_~A~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse5 (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (or (and (< (div (div (+ .cse0 (- 2)) 2) (- 4294967296)) 1) .cse1 (= (+ (* .cse2 |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~r~0#1| (* .cse2 |ULTIMATE.start_main_~q~0#1|)) (+ |ULTIMATE.start_main_~d~0#1| (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) .cse3 .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) .cse1 (< (div (+ (- 1) |ULTIMATE.start_main_~d~0#1|) (- 4294967296)) 1) .cse3 .cse4) (and (= 2 |ULTIMATE.start_main_~p~0#1|) (= (* 2 .cse2) |ULTIMATE.start_main_~d~0#1|) .cse1 .cse3 (< (div (div (+ (- 2) |ULTIMATE.start_main_~d~0#1|) 2) (- 4294967296)) 1) .cse4 .cse5)))) [2021-12-06 17:31:51,669 INFO L854 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (let ((.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (< 0 (+ (div (+ 2 (* |ULTIMATE.start_main_~r~0#1| (- 1))) 4294967296) 1))) (.cse4 (= (+ (* 4294967296 (div |ULTIMATE.start_main_~A~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse5 (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (or (and (< (div (div (+ .cse0 (- 2)) 2) (- 4294967296)) 1) .cse1 (= (+ (* .cse2 |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~r~0#1| (* .cse2 |ULTIMATE.start_main_~q~0#1|)) (+ |ULTIMATE.start_main_~d~0#1| (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) .cse3 .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) .cse1 (< (div (+ (- 1) |ULTIMATE.start_main_~d~0#1|) (- 4294967296)) 1) .cse3 .cse4) (and (= 2 |ULTIMATE.start_main_~p~0#1|) (= (* 2 .cse2) |ULTIMATE.start_main_~d~0#1|) .cse1 .cse3 (< (div (div (+ (- 2) |ULTIMATE.start_main_~d~0#1|) 2) (- 4294967296)) 1) .cse4 .cse5)))) [2021-12-06 17:31:51,669 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 17:31:51,669 INFO L861 garLoopResultBuilder]: At program point L62(lines 22 63) the Hoare annotation is: true [2021-12-06 17:31:51,669 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-12-06 17:31:51,669 INFO L858 garLoopResultBuilder]: For program point L54(lines 54 57) no Hoare annotation was computed. [2021-12-06 17:31:51,669 INFO L858 garLoopResultBuilder]: For program point L54-2(lines 22 63) no Hoare annotation was computed. [2021-12-06 17:31:51,669 INFO L854 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~d~0#1| .cse2)) (.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (or (and .cse0 (<= 0 |ULTIMATE.start_main_~r~0#1|) (= .cse1 (+ |ULTIMATE.start_main_~r~0#1| (* .cse2 |ULTIMATE.start_main_~q~0#1|))) (< |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|) (= 2 |ULTIMATE.start_main_~q~0#1|) (< 0 (+ (div (+ 2 (* .cse2 (- 2))) 4294967296) 1)) (= (div (+ .cse1 (* |ULTIMATE.start_main_~r~0#1| (- 1))) 2) |ULTIMATE.start_main_~d~0#1|)) (and .cse0 .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| .cse1)) (and .cse0 .cse3 (<= .cse1 2) (< .cse1 (* 2 |ULTIMATE.start_main_~d~0#1|)) (= |ULTIMATE.start_main_~q~0#1| 1) (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse1) (< |ULTIMATE.start_main_~d~0#1| (+ .cse1 1)))))) [2021-12-06 17:31:51,669 INFO L854 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (let ((.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (< 0 (+ (div (+ 2 (* |ULTIMATE.start_main_~r~0#1| (- 1))) 4294967296) 1))) (.cse4 (= (+ (* 4294967296 (div |ULTIMATE.start_main_~A~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse5 (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (or (and (< (div (div (+ .cse0 (- 2)) 2) (- 4294967296)) 1) .cse1 (= (+ (* .cse2 |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~r~0#1| (* .cse2 |ULTIMATE.start_main_~q~0#1|)) (+ |ULTIMATE.start_main_~d~0#1| (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) .cse3 .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) .cse1 (< (div (+ (- 1) |ULTIMATE.start_main_~d~0#1|) (- 4294967296)) 1) .cse3 .cse4) (and (= 2 |ULTIMATE.start_main_~p~0#1|) (= (* 2 .cse2) |ULTIMATE.start_main_~d~0#1|) .cse1 .cse3 (< (div (div (+ (- 2) |ULTIMATE.start_main_~d~0#1|) 2) (- 4294967296)) 1) .cse4 .cse5)))) [2021-12-06 17:31:51,669 INFO L861 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2021-12-06 17:31:51,669 INFO L858 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-12-06 17:31:51,670 INFO L854 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse9 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse7 (* .cse9 |ULTIMATE.start_main_~q~0#1|)) (.cse6 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse2 (= (+ (* .cse9 |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~r~0#1| .cse7) (+ |ULTIMATE.start_main_~d~0#1| .cse6))) (.cse5 (<= .cse6 2)) (.cse1 (< |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse4 (* |ULTIMATE.start_main_~r~0#1| (- 1))) (.cse8 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse6))) (or (and .cse0 .cse1 .cse2 .cse3 (< 0 (+ (div (+ 2 .cse4) 4294967296) 1)) (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= (div |ULTIMATE.start_main_~d~0#1| 2) |ULTIMATE.start_main_~r~0#1|)) (and .cse5 (< .cse6 (* 2 |ULTIMATE.start_main_~d~0#1|)) (= .cse6 (+ |ULTIMATE.start_main_~r~0#1| .cse7)) .cse2 (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse6) (< |ULTIMATE.start_main_~d~0#1| (+ .cse6 1))) (and .cse8 .cse5 (<= 0 |ULTIMATE.start_main_~r~0#1|) .cse1 (= 2 |ULTIMATE.start_main_~q~0#1|) (< 0 (+ (div (+ 2 (* .cse9 (- 2))) 4294967296) 1)) (= (div (+ .cse6 .cse4) 2) |ULTIMATE.start_main_~d~0#1|) (< 0 (* 2 .cse9))) (and .cse8 (= |ULTIMATE.start_main_~d~0#1| .cse9) .cse0 .cse3))))) [2021-12-06 17:31:51,670 INFO L854 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse8 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse9 (* .cse8 |ULTIMATE.start_main_~q~0#1|)) (.cse5 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse2 (= (+ (* .cse8 |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~r~0#1| .cse9) (+ |ULTIMATE.start_main_~d~0#1| .cse5))) (.cse6 (= .cse5 (+ |ULTIMATE.start_main_~r~0#1| .cse9))) (.cse1 (< |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse4 (* |ULTIMATE.start_main_~r~0#1| (- 1))) (.cse7 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse5))) (or (and .cse0 .cse1 .cse2 .cse3 (< 0 (+ (div (+ 2 .cse4) 4294967296) 1)) (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= (div |ULTIMATE.start_main_~d~0#1| 2) |ULTIMATE.start_main_~r~0#1|)) (and (<= .cse5 2) (< .cse5 (* 2 |ULTIMATE.start_main_~d~0#1|)) .cse6 .cse2 (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse5) (< |ULTIMATE.start_main_~d~0#1| (+ .cse5 1))) (and .cse7 (<= 0 |ULTIMATE.start_main_~r~0#1|) .cse6 .cse1 (= 2 |ULTIMATE.start_main_~q~0#1|) (< 0 (+ (div (+ 2 (* .cse8 (- 2))) 4294967296) 1)) (= (div (+ .cse5 .cse4) 2) |ULTIMATE.start_main_~d~0#1|)) (and .cse7 (= |ULTIMATE.start_main_~d~0#1| .cse8) .cse0 .cse3))))) [2021-12-06 17:31:51,670 INFO L858 garLoopResultBuilder]: For program point L39(lines 36 44) no Hoare annotation was computed. [2021-12-06 17:31:51,670 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2021-12-06 17:31:51,670 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-12-06 17:31:51,670 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2021-12-06 17:31:51,670 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2021-12-06 17:31:51,670 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-12-06 17:31:51,670 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-12-06 17:31:51,670 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2021-12-06 17:31:51,670 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2021-12-06 17:31:51,670 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2021-12-06 17:31:51,670 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-12-06 17:31:51,673 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:31:51,674 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:31:51,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:31:51 BoogieIcfgContainer [2021-12-06 17:31:51,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:31:51,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:31:51,688 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:31:51,688 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:31:51,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:30:40" (3/4) ... [2021-12-06 17:31:51,690 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 17:31:51,694 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-06 17:31:51,694 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-06 17:31:51,697 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-06 17:31:51,697 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 17:31:51,697 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 17:31:51,697 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 17:31:51,723 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 17:31:51,723 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:31:51,724 INFO L158 Benchmark]: Toolchain (without parser) took 71952.32ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 60.0MB in the beginning and 54.8MB in the end (delta: 5.2MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2021-12-06 17:31:51,724 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 94.4MB. Free memory was 67.2MB in the beginning and 67.1MB in the end (delta: 24.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:31:51,724 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.95ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 69.8MB in the end (delta: -10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 17:31:51,725 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.50ms. Allocated memory is still 94.4MB. Free memory was 69.8MB in the beginning and 68.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:31:51,725 INFO L158 Benchmark]: Boogie Preprocessor took 20.67ms. Allocated memory is still 94.4MB. Free memory was 68.2MB in the beginning and 67.3MB in the end (delta: 806.0kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 17:31:51,725 INFO L158 Benchmark]: RCFGBuilder took 224.76ms. Allocated memory is still 94.4MB. Free memory was 67.0MB in the beginning and 57.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 17:31:51,725 INFO L158 Benchmark]: TraceAbstraction took 71452.72ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 56.9MB in the beginning and 58.0MB in the end (delta: -1.1MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2021-12-06 17:31:51,726 INFO L158 Benchmark]: Witness Printer took 36.05ms. Allocated memory is still 113.2MB. Free memory was 58.0MB in the beginning and 54.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 17:31:51,727 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 94.4MB. Free memory was 67.2MB in the beginning and 67.1MB in the end (delta: 24.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.95ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 69.8MB in the end (delta: -10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.50ms. Allocated memory is still 94.4MB. Free memory was 69.8MB in the beginning and 68.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.67ms. Allocated memory is still 94.4MB. Free memory was 68.2MB in the beginning and 67.3MB in the end (delta: 806.0kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 224.76ms. Allocated memory is still 94.4MB. Free memory was 67.0MB in the beginning and 57.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 71452.72ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 56.9MB in the beginning and 58.0MB in the end (delta: -1.1MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. * Witness Printer took 36.05ms. Allocated memory is still 113.2MB. Free memory was 58.0MB in the beginning and 54.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 71.4s, OverallIterations: 15, TraceHistogramMax: 16, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 20.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 360 SdHoareTripleChecker+Valid, 8.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 313 mSDsluCounter, 3131 SdHoareTripleChecker+Invalid, 7.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2480 mSDsCounter, 476 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1770 IncrementalHoareTripleChecker+Invalid, 2246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 476 mSolverCounterUnsat, 651 mSDtfsCounter, 1770 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1620 GetRequests, 1449 SyntacticMatches, 8 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 20.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=8, InterpolantAutomatonStates: 125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 75 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 98 PreInvPairs, 131 NumberOfFragments, 1078 HoareAnnotationTreeSize, 98 FomulaSimplifications, 7546 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 14 FomulaSimplificationsInter, 2952 FormulaSimplificationTreeSizeReductionInter, 9.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 37.7s InterpolantComputationTime, 989 NumberOfCodeBlocks, 962 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1600 ConstructedInterpolants, 0 QuantifiedInterpolants, 16367 SizeOfPredicates, 33 NumberOfNonLiveVariables, 2022 ConjunctsInSsa, 213 ConjunctsInUnsatCore, 23 InterpolantComputations, 8 PerfectInterpolantSequences, 4370/4555 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((d / 2 + -2) / 2 / -4294967296 < 1 && q == 0) && B % 4294967296 * p + r + B % 4294967296 * q == d + A % 4294967296) && 0 < (2 + r * -1) / 4294967296 + 1) && 4294967296 * (A / 4294967296) + r == A) && d % 2 == 0) && d / 2 <= r) || (((((p == 1 && d == B % 4294967296) && q == 0) && (-1 + d) / -4294967296 < 1) && 0 < (2 + r * -1) / 4294967296 + 1) && 4294967296 * (A / 4294967296) + r == A)) || ((((((2 == p && 2 * (B % 4294967296) == d) && q == 0) && 0 < (2 + r * -1) / 4294967296 + 1) && (-2 + d) / 2 / -4294967296 < 1) && 4294967296 * (A / 4294967296) + r == A) && d / 2 <= r) RESULT: Ultimate proved your program to be correct! [2021-12-06 17:31:51,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e39e48a-1810-44d4-84f4-4058df1e4adc/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE