./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.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_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/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_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/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_d30a48b5-959f-48cf-91aa-88099cdb6fb6/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 0a6d36c45579adaf3871b264b96aba9fa14294bc645c23d191a4e77c149500df --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:49:00,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:49:00,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:49:00,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:49:00,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:49:00,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:49:00,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:49:00,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:49:00,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:49:00,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:49:00,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:49:00,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:49:00,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:49:00,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:49:00,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:49:00,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:49:00,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:49:00,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:49:00,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:49:00,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:49:00,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:49:00,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:49:00,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:49:00,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:49:00,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:49:00,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:49:00,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:49:00,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:49:00,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:49:00,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:49:00,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:49:00,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:49:00,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:49:00,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:49:00,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:49:00,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:49:00,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:49:00,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:49:00,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:49:00,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:49:00,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:49:00,760 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:49:00,778 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:49:00,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:49:00,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:49:00,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:49:00,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:49:00,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:49:00,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:49:00,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:49:00,780 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:49:00,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:49:00,780 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:49:00,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:49:00,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:49:00,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:49:00,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:49:00,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:49:00,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:49:00,781 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:49:00,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:49:00,781 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:49:00,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:49:00,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:49:00,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:49:00,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:49:00,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:49:00,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:49:00,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:49:00,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:49:00,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:49:00,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:49:00,803 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:49:00,803 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:49:00,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:49:00,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:49:00,803 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_d30a48b5-959f-48cf-91aa-88099cdb6fb6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a6d36c45579adaf3871b264b96aba9fa14294bc645c23d191a4e77c149500df [2021-12-06 19:49:00,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:49:01,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:49:01,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:49:01,017 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:49:01,018 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:49:01,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c [2021-12-06 19:49:01,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/data/1a1990a48/3b97c903af6547558a10079ac705abbc/FLAGc2c603791 [2021-12-06 19:49:01,423 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:49:01,423 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c [2021-12-06 19:49:01,428 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/data/1a1990a48/3b97c903af6547558a10079ac705abbc/FLAGc2c603791 [2021-12-06 19:49:01,837 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/data/1a1990a48/3b97c903af6547558a10079ac705abbc [2021-12-06 19:49:01,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:49:01,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:49:01,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:49:01,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:49:01,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:49:01,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:49:01" (1/1) ... [2021-12-06 19:49:01,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4565825c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:01, skipping insertion in model container [2021-12-06 19:49:01,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:49:01" (1/1) ... [2021-12-06 19:49:01,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:49:01,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:49:01,956 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_d30a48b5-959f-48cf-91aa-88099cdb6fb6/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c[489,502] [2021-12-06 19:49:01,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:49:01,974 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:49:01,984 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_d30a48b5-959f-48cf-91aa-88099cdb6fb6/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c[489,502] [2021-12-06 19:49:01,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:49:02,002 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:49:02,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:02 WrapperNode [2021-12-06 19:49:02,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:49:02,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:49:02,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:49:02,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:49:02,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:02" (1/1) ... [2021-12-06 19:49:02,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:02" (1/1) ... [2021-12-06 19:49:02,033 INFO L137 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 59 [2021-12-06 19:49:02,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:49:02,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:49:02,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:49:02,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:49:02,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:02" (1/1) ... [2021-12-06 19:49:02,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:02" (1/1) ... [2021-12-06 19:49:02,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:02" (1/1) ... [2021-12-06 19:49:02,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:02" (1/1) ... [2021-12-06 19:49:02,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:02" (1/1) ... [2021-12-06 19:49:02,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:02" (1/1) ... [2021-12-06 19:49:02,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:02" (1/1) ... [2021-12-06 19:49:02,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:49:02,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:49:02,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:49:02,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:49:02,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:02" (1/1) ... [2021-12-06 19:49:02,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:49:02,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:02,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:49:02,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:49:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:49:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 19:49:02,114 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 19:49:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:49:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:49:02,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:49:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 19:49:02,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 19:49:02,172 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:49:02,173 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:49:02,271 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:49:02,277 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:49:02,277 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 19:49:02,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:49:02 BoogieIcfgContainer [2021-12-06 19:49:02,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:49:02,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:49:02,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:49:02,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:49:02,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:49:01" (1/3) ... [2021-12-06 19:49:02,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e19e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:49:02, skipping insertion in model container [2021-12-06 19:49:02,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:49:02" (2/3) ... [2021-12-06 19:49:02,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e19e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:49:02, skipping insertion in model container [2021-12-06 19:49:02,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:49:02" (3/3) ... [2021-12-06 19:49:02,286 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound10.c [2021-12-06 19:49:02,290 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:49:02,290 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:49:02,328 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:49:02,333 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 19:49:02,333 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:49:02,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 19:49:02,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 19:49:02,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:02,351 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:02,351 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:02,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:02,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1165920622, now seen corresponding path program 1 times [2021-12-06 19:49:02,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:02,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277903418] [2021-12-06 19:49:02,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:02,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:02,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:49:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:02,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:49:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:49:02,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:02,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277903418] [2021-12-06 19:49:02,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277903418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:02,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:02,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:49:02,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876170481] [2021-12-06 19:49:02,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:02,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 19:49:02,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:02,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 19:49:02,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 19:49:02,503 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:49:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:02,520 INFO L93 Difference]: Finished difference Result 57 states and 89 transitions. [2021-12-06 19:49:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 19:49:02,522 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-12-06 19:49:02,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:02,529 INFO L225 Difference]: With dead ends: 57 [2021-12-06 19:49:02,529 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 19:49:02,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 19:49:02,536 INFO L933 BasicCegarLoop]: 39 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, 39 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 19:49:02,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:49:02,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 19:49:02,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-06 19:49:02,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 19:49:02,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2021-12-06 19:49:02,568 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 18 [2021-12-06 19:49:02,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:02,568 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2021-12-06 19:49:02,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:49:02,568 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2021-12-06 19:49:02,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 19:49:02,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:02,570 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:02,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:49:02,570 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:02,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:02,571 INFO L85 PathProgramCache]: Analyzing trace with hash -542319922, now seen corresponding path program 1 times [2021-12-06 19:49:02,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:02,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372600883] [2021-12-06 19:49:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:02,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:02,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:49:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:02,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:49:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:02,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:49:02,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:02,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372600883] [2021-12-06 19:49:02,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372600883] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:02,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:02,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:49:02,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821826923] [2021-12-06 19:49:02,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:02,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:49:02,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:02,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:49:02,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:49:02,647 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:49:02,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:02,665 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2021-12-06 19:49:02,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:49:02,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-12-06 19:49:02,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:02,666 INFO L225 Difference]: With dead ends: 38 [2021-12-06 19:49:02,666 INFO L226 Difference]: Without dead ends: 28 [2021-12-06 19:49:02,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:49:02,668 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:02,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 87 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:49:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-06 19:49:02,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-06 19:49:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 19:49:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2021-12-06 19:49:02,675 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 19 [2021-12-06 19:49:02,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:02,676 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2021-12-06 19:49:02,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:49:02,676 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2021-12-06 19:49:02,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 19:49:02,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:02,677 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:02,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:49:02,677 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:02,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:02,678 INFO L85 PathProgramCache]: Analyzing trace with hash -540651626, now seen corresponding path program 1 times [2021-12-06 19:49:02,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:02,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208549203] [2021-12-06 19:49:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:02,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:02,690 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:49:02,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123937175] [2021-12-06 19:49:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:02,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:02,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:02,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:49:02,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:49:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:02,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 19:49:02,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:49:02,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:49:02,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:02,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208549203] [2021-12-06 19:49:02,837 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:49:02,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123937175] [2021-12-06 19:49:02,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123937175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:02,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:02,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:49:02,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130800011] [2021-12-06 19:49:02,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:02,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:49:02,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:02,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:49:02,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:49:02,838 INFO L87 Difference]: Start difference. First operand 28 states and 37 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:49:02,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:02,882 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2021-12-06 19:49:02,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:49:02,883 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-12-06 19:49:02,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:02,884 INFO L225 Difference]: With dead ends: 45 [2021-12-06 19:49:02,884 INFO L226 Difference]: Without dead ends: 43 [2021-12-06 19:49:02,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 19:49:02,885 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:02,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 136 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:49:02,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-06 19:49:02,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-12-06 19:49:02,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 25 states have internal predecessors, (30), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-06 19:49:02,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 59 transitions. [2021-12-06 19:49:02,895 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 59 transitions. Word has length 19 [2021-12-06 19:49:02,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:02,895 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 59 transitions. [2021-12-06 19:49:02,895 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:49:02,895 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 59 transitions. [2021-12-06 19:49:02,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 19:49:02,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:02,896 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:02,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:49:03,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-06 19:49:03,098 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:03,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:03,101 INFO L85 PathProgramCache]: Analyzing trace with hash -276555716, now seen corresponding path program 1 times [2021-12-06 19:49:03,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:03,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275069454] [2021-12-06 19:49:03,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:03,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:03,149 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:49:03,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768129958] [2021-12-06 19:49:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:03,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:03,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:03,154 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:49:03,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:49:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:03,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 19:49:03,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:49:03,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:49:03,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:03,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275069454] [2021-12-06 19:49:03,404 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:49:03,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768129958] [2021-12-06 19:49:03,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768129958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:03,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:03,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:49:03,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685522262] [2021-12-06 19:49:03,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:03,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:49:03,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:03,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:49:03,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:49:03,407 INFO L87 Difference]: Start difference. First operand 42 states and 59 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 19:49:03,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:03,489 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2021-12-06 19:49:03,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:49:03,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-12-06 19:49:03,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:03,491 INFO L225 Difference]: With dead ends: 49 [2021-12-06 19:49:03,491 INFO L226 Difference]: Without dead ends: 47 [2021-12-06 19:49:03,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:49:03,492 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 24 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:03,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 200 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:49:03,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-12-06 19:49:03,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-12-06 19:49:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-06 19:49:03,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2021-12-06 19:49:03,503 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 24 [2021-12-06 19:49:03,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:03,503 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2021-12-06 19:49:03,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 19:49:03,504 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2021-12-06 19:49:03,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 19:49:03,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:03,505 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:03,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:49:03,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:03,707 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:03,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:03,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1836785898, now seen corresponding path program 1 times [2021-12-06 19:49:03,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:03,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578437893] [2021-12-06 19:49:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:03,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:03,742 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:49:03,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458496900] [2021-12-06 19:49:03,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:03,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:03,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:03,746 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:49:03,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:49:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:03,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 19:49:03,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 19:49:04,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:49:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:49:04,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:04,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578437893] [2021-12-06 19:49:04,098 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:49:04,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458496900] [2021-12-06 19:49:04,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458496900] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 19:49:04,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:49:04,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2021-12-06 19:49:04,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662394802] [2021-12-06 19:49:04,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:04,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:49:04,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:04,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:49:04,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:49:04,100 INFO L87 Difference]: Start difference. First operand 46 states and 62 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 19:49:04,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:04,137 INFO L93 Difference]: Finished difference Result 71 states and 103 transitions. [2021-12-06 19:49:04,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:49:04,138 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 19:49:04,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:04,140 INFO L225 Difference]: With dead ends: 71 [2021-12-06 19:49:04,140 INFO L226 Difference]: Without dead ends: 67 [2021-12-06 19:49:04,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:49:04,142 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:04,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 128 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:49:04,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-12-06 19:49:04,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-12-06 19:49:04,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 39 states have internal predecessors, (47), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-06 19:49:04,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 96 transitions. [2021-12-06 19:49:04,155 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 96 transitions. Word has length 29 [2021-12-06 19:49:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:04,156 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 96 transitions. [2021-12-06 19:49:04,156 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 19:49:04,156 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2021-12-06 19:49:04,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 19:49:04,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:04,157 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 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 19:49:04,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:49:04,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:04,359 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:04,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:04,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1071030291, now seen corresponding path program 1 times [2021-12-06 19:49:04,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:04,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864930659] [2021-12-06 19:49:04,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:04,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:04,394 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:49:04,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6231373] [2021-12-06 19:49:04,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:04,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:04,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:04,399 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:49:04,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 19:49:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:04,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 19:49:04,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 19:49:04,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:49:04,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:04,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864930659] [2021-12-06 19:49:04,581 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:49:04,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6231373] [2021-12-06 19:49:04,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6231373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:04,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:04,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:49:04,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918342001] [2021-12-06 19:49:04,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:04,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:49:04,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:04,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:49:04,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:49:04,583 INFO L87 Difference]: Start difference. First operand 67 states and 96 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-06 19:49:04,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:04,613 INFO L93 Difference]: Finished difference Result 83 states and 119 transitions. [2021-12-06 19:49:04,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:49:04,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2021-12-06 19:49:04,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:04,615 INFO L225 Difference]: With dead ends: 83 [2021-12-06 19:49:04,615 INFO L226 Difference]: Without dead ends: 81 [2021-12-06 19:49:04,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 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 19:49:04,616 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:04,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 137 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:49:04,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-06 19:49:04,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2021-12-06 19:49:04,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 45 states have internal predecessors, (50), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-06 19:49:04,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2021-12-06 19:49:04,628 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 35 [2021-12-06 19:49:04,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:04,629 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2021-12-06 19:49:04,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-06 19:49:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2021-12-06 19:49:04,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 19:49:04,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:04,630 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 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 19:49:04,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 19:49:04,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:04,832 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:04,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:04,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1689492770, now seen corresponding path program 1 times [2021-12-06 19:49:04,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:04,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327011813] [2021-12-06 19:49:04,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:04,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:04,867 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:49:04,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061598964] [2021-12-06 19:49:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:04,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:04,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:04,870 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:49:04,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 19:49:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:04,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 19:49:04,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 19:49:04,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:49:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 19:49:05,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:05,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327011813] [2021-12-06 19:49:05,002 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:49:05,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061598964] [2021-12-06 19:49:05,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061598964] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:49:05,002 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:49:05,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-12-06 19:49:05,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614383065] [2021-12-06 19:49:05,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:49:05,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:49:05,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:05,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:49:05,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:49:05,003 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-06 19:49:05,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:05,092 INFO L93 Difference]: Finished difference Result 218 states and 286 transitions. [2021-12-06 19:49:05,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:49:05,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 38 [2021-12-06 19:49:05,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:05,094 INFO L225 Difference]: With dead ends: 218 [2021-12-06 19:49:05,094 INFO L226 Difference]: Without dead ends: 196 [2021-12-06 19:49:05,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:49:05,096 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 73 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:05,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 159 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:49:05,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-06 19:49:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 190. [2021-12-06 19:49:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 108 states have (on average 1.2222222222222223) internal successors, (132), 119 states have internal predecessors, (132), 61 states have call successors, (61), 21 states have call predecessors, (61), 20 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2021-12-06 19:49:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 247 transitions. [2021-12-06 19:49:05,121 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 247 transitions. Word has length 38 [2021-12-06 19:49:05,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:05,122 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 247 transitions. [2021-12-06 19:49:05,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-06 19:49:05,122 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 247 transitions. [2021-12-06 19:49:05,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 19:49:05,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:05,123 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:05,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 19:49:05,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 19:49:05,324 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:05,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:05,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1691161066, now seen corresponding path program 1 times [2021-12-06 19:49:05,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:05,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136999565] [2021-12-06 19:49:05,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:05,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:05,353 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:49:05,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758303629] [2021-12-06 19:49:05,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:05,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:05,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:05,357 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:49:05,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 19:49:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:05,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 19:49:05,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 19:49:05,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:49:05,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:05,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136999565] [2021-12-06 19:49:05,487 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:49:05,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758303629] [2021-12-06 19:49:05,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758303629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:05,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:05,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:49:05,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009632206] [2021-12-06 19:49:05,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:05,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:49:05,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:05,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:49:05,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:49:05,488 INFO L87 Difference]: Start difference. First operand 190 states and 247 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 19:49:05,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:05,522 INFO L93 Difference]: Finished difference Result 204 states and 260 transitions. [2021-12-06 19:49:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:49:05,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 38 [2021-12-06 19:49:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:05,524 INFO L225 Difference]: With dead ends: 204 [2021-12-06 19:49:05,524 INFO L226 Difference]: Without dead ends: 199 [2021-12-06 19:49:05,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 1 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 19:49:05,525 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 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, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:05,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 127 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:49:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-12-06 19:49:05,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2021-12-06 19:49:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 117 states have (on average 1.205128205128205) internal successors, (141), 128 states have internal predecessors, (141), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-06 19:49:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 250 transitions. [2021-12-06 19:49:05,545 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 250 transitions. Word has length 38 [2021-12-06 19:49:05,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:05,545 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 250 transitions. [2021-12-06 19:49:05,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 19:49:05,546 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 250 transitions. [2021-12-06 19:49:05,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 19:49:05,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:05,547 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:05,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 19:49:05,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:05,747 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:05,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:05,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1925895455, now seen corresponding path program 1 times [2021-12-06 19:49:05,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:05,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443544822] [2021-12-06 19:49:05,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:05,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:05,755 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:49:05,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086102206] [2021-12-06 19:49:05,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:05,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:05,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:05,756 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:49:05,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 19:49:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:05,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 19:49:05,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 19:49:05,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:49:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 19:49:05,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:05,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443544822] [2021-12-06 19:49:05,935 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:49:05,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086102206] [2021-12-06 19:49:05,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086102206] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:49:05,935 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:49:05,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-12-06 19:49:05,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485710087] [2021-12-06 19:49:05,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:49:05,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:49:05,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:05,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:49:05,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:49:05,937 INFO L87 Difference]: Start difference. First operand 199 states and 250 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 19:49:06,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:06,031 INFO L93 Difference]: Finished difference Result 228 states and 286 transitions. [2021-12-06 19:49:06,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:49:06,031 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 40 [2021-12-06 19:49:06,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:06,033 INFO L225 Difference]: With dead ends: 228 [2021-12-06 19:49:06,033 INFO L226 Difference]: Without dead ends: 212 [2021-12-06 19:49:06,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:49:06,034 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 20 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:06,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 109 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:49:06,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-12-06 19:49:06,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2021-12-06 19:49:06,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 127 states have (on average 1.1653543307086613) internal successors, (148), 138 states have internal predecessors, (148), 57 states have call successors, (57), 25 states have call predecessors, (57), 25 states have return successors, (53), 46 states have call predecessors, (53), 53 states have call successors, (53) [2021-12-06 19:49:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 258 transitions. [2021-12-06 19:49:06,051 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 258 transitions. Word has length 40 [2021-12-06 19:49:06,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:06,051 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 258 transitions. [2021-12-06 19:49:06,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 19:49:06,051 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 258 transitions. [2021-12-06 19:49:06,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 19:49:06,052 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:06,052 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 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 19:49:06,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 19:49:06,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:06,254 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:06,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:06,254 INFO L85 PathProgramCache]: Analyzing trace with hash 968731240, now seen corresponding path program 2 times [2021-12-06 19:49:06,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:06,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461123823] [2021-12-06 19:49:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:06,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:06,272 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:49:06,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955669107] [2021-12-06 19:49:06,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:49:06,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:06,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:06,275 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:49:06,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 19:49:06,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:49:06,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:49:06,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 19:49:06,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 19:49:06,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:49:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 19:49:06,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:06,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461123823] [2021-12-06 19:49:06,598 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:49:06,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955669107] [2021-12-06 19:49:06,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955669107] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:49:06,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:49:06,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-12-06 19:49:06,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013998625] [2021-12-06 19:49:06,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:49:06,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:49:06,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:06,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:49:06,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:49:06,600 INFO L87 Difference]: Start difference. First operand 210 states and 258 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 5 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 19:49:07,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:07,017 INFO L93 Difference]: Finished difference Result 249 states and 310 transitions. [2021-12-06 19:49:07,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:49:07,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 5 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 43 [2021-12-06 19:49:07,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:07,019 INFO L225 Difference]: With dead ends: 249 [2021-12-06 19:49:07,019 INFO L226 Difference]: Without dead ends: 225 [2021-12-06 19:49:07,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:49:07,020 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 14 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:07,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 186 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:49:07,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-12-06 19:49:07,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 206. [2021-12-06 19:49:07,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 133 states have (on average 1.1278195488721805) internal successors, (150), 141 states have internal predecessors, (150), 45 states have call successors, (45), 27 states have call predecessors, (45), 27 states have return successors, (41), 37 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-06 19:49:07,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 236 transitions. [2021-12-06 19:49:07,036 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 236 transitions. Word has length 43 [2021-12-06 19:49:07,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:07,036 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 236 transitions. [2021-12-06 19:49:07,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 5 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 19:49:07,037 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 236 transitions. [2021-12-06 19:49:07,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 19:49:07,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:07,038 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:07,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 19:49:07,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 19:49:07,239 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:07,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:07,241 INFO L85 PathProgramCache]: Analyzing trace with hash -715006568, now seen corresponding path program 1 times [2021-12-06 19:49:07,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:07,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430236633] [2021-12-06 19:49:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:07,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:07,264 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:49:07,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837182771] [2021-12-06 19:49:07,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:07,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:07,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:07,268 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:49:07,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 19:49:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:07,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 19:49:07,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-06 19:49:07,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:49:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-06 19:49:07,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:07,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430236633] [2021-12-06 19:49:07,615 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:49:07,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837182771] [2021-12-06 19:49:07,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837182771] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 19:49:07,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:49:07,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2021-12-06 19:49:07,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052400062] [2021-12-06 19:49:07,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:07,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:49:07,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:07,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:49:07,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:49:07,616 INFO L87 Difference]: Start difference. First operand 206 states and 236 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, (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 19:49:07,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:07,652 INFO L93 Difference]: Finished difference Result 212 states and 241 transitions. [2021-12-06 19:49:07,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:49:07,652 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, (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 57 [2021-12-06 19:49:07,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:07,653 INFO L225 Difference]: With dead ends: 212 [2021-12-06 19:49:07,653 INFO L226 Difference]: Without dead ends: 188 [2021-12-06 19:49:07,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:49:07,654 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:07,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 95 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:49:07,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-12-06 19:49:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 185. [2021-12-06 19:49:07,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 124 states have (on average 1.1129032258064515) internal successors, (138), 128 states have internal predecessors, (138), 36 states have call successors, (36), 24 states have call predecessors, (36), 24 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2021-12-06 19:49:07,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 208 transitions. [2021-12-06 19:49:07,668 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 208 transitions. Word has length 57 [2021-12-06 19:49:07,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:07,669 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 208 transitions. [2021-12-06 19:49:07,669 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, (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 19:49:07,669 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 208 transitions. [2021-12-06 19:49:07,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 19:49:07,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:07,670 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:07,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-06 19:49:07,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 19:49:07,872 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:07,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:07,873 INFO L85 PathProgramCache]: Analyzing trace with hash 985491918, now seen corresponding path program 2 times [2021-12-06 19:49:07,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:07,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298667820] [2021-12-06 19:49:07,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:07,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:07,900 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:49:07,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535757710] [2021-12-06 19:49:07,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:49:07,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:07,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:07,903 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:49:07,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 19:49:08,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:49:08,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:49:08,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 19:49:08,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 24 proven. 266 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-06 19:49:08,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:49:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 24 proven. 50 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2021-12-06 19:49:08,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:08,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298667820] [2021-12-06 19:49:08,384 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:49:08,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535757710] [2021-12-06 19:49:08,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535757710] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:49:08,384 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:49:08,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-12-06 19:49:08,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940705456] [2021-12-06 19:49:08,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:49:08,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 19:49:08,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:08,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 19:49:08,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:49:08,385 INFO L87 Difference]: Start difference. First operand 185 states and 208 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2021-12-06 19:49:08,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:08,570 INFO L93 Difference]: Finished difference Result 512 states and 601 transitions. [2021-12-06 19:49:08,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 19:49:08,570 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 95 [2021-12-06 19:49:08,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:08,573 INFO L225 Difference]: With dead ends: 512 [2021-12-06 19:49:08,573 INFO L226 Difference]: Without dead ends: 503 [2021-12-06 19:49:08,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2021-12-06 19:49:08,574 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 106 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:08,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 260 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:49:08,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-12-06 19:49:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2021-12-06 19:49:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 334 states have (on average 1.095808383233533) internal successors, (366), 344 states have internal predecessors, (366), 102 states have call successors, (102), 66 states have call predecessors, (102), 66 states have return successors, (100), 92 states have call predecessors, (100), 100 states have call successors, (100) [2021-12-06 19:49:08,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 568 transitions. [2021-12-06 19:49:08,607 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 568 transitions. Word has length 95 [2021-12-06 19:49:08,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:08,608 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 568 transitions. [2021-12-06 19:49:08,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2021-12-06 19:49:08,608 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 568 transitions. [2021-12-06 19:49:08,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-06 19:49:08,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:08,611 INFO L514 BasicCegarLoop]: trace histogram [31, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:08,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 19:49:08,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 19:49:08,812 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:08,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:08,812 INFO L85 PathProgramCache]: Analyzing trace with hash 325062734, now seen corresponding path program 3 times [2021-12-06 19:49:08,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:08,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457803117] [2021-12-06 19:49:08,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:08,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:08,821 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:49:08,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117666017] [2021-12-06 19:49:08,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:49:08,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:08,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:08,822 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:49:08,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 19:49:08,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-12-06 19:49:08,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-12-06 19:49:08,925 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:49:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:49:09,043 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:49:09,043 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 19:49:09,044 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 19:49:09,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 19:49:09,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:09,255 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:09,265 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 19:49:09,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 07:49:09 BoogieIcfgContainer [2021-12-06 19:49:09,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 19:49:09,405 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 19:49:09,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 19:49:09,405 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 19:49:09,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:49:02" (3/4) ... [2021-12-06 19:49:09,406 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 19:49:09,467 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 19:49:09,467 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 19:49:09,468 INFO L158 Benchmark]: Toolchain (without parser) took 7628.06ms. Allocated memory was 111.1MB in the beginning and 184.5MB in the end (delta: 73.4MB). Free memory was 69.1MB in the beginning and 154.3MB in the end (delta: -85.3MB). Peak memory consumption was 90.4MB. Max. memory is 16.1GB. [2021-12-06 19:49:09,468 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 111.1MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:49:09,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.91ms. Allocated memory is still 111.1MB. Free memory was 68.9MB in the beginning and 58.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 19:49:09,469 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.26ms. Allocated memory is still 111.1MB. Free memory was 58.7MB in the beginning and 57.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:49:09,469 INFO L158 Benchmark]: Boogie Preprocessor took 20.39ms. Allocated memory is still 111.1MB. Free memory was 57.2MB in the beginning and 56.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:49:09,469 INFO L158 Benchmark]: RCFGBuilder took 224.07ms. Allocated memory is still 111.1MB. Free memory was 56.1MB in the beginning and 83.6MB in the end (delta: -27.5MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-12-06 19:49:09,469 INFO L158 Benchmark]: TraceAbstraction took 7123.74ms. Allocated memory was 111.1MB in the beginning and 184.5MB in the end (delta: 73.4MB). Free memory was 83.1MB in the beginning and 59.0MB in the end (delta: 24.2MB). Peak memory consumption was 99.5MB. Max. memory is 16.1GB. [2021-12-06 19:49:09,469 INFO L158 Benchmark]: Witness Printer took 62.70ms. Allocated memory is still 184.5MB. Free memory was 59.0MB in the beginning and 154.3MB in the end (delta: -95.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 19:49:09,471 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 111.1MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 161.91ms. Allocated memory is still 111.1MB. Free memory was 68.9MB in the beginning and 58.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.26ms. Allocated memory is still 111.1MB. Free memory was 58.7MB in the beginning and 57.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.39ms. Allocated memory is still 111.1MB. Free memory was 57.2MB in the beginning and 56.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 224.07ms. Allocated memory is still 111.1MB. Free memory was 56.1MB in the beginning and 83.6MB in the end (delta: -27.5MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7123.74ms. Allocated memory was 111.1MB in the beginning and 184.5MB in the end (delta: 73.4MB). Free memory was 83.1MB in the beginning and 59.0MB in the end (delta: 24.2MB). Peak memory consumption was 99.5MB. Max. memory is 16.1GB. * Witness Printer took 62.70ms. Allocated memory is still 184.5MB. Free memory was 59.0MB in the beginning and 154.3MB in the end (delta: -95.4MB). 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 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [counter=0, x=12, y=1] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [counter=0, x=12, y=1] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [a=12, b=1, counter=0, p=1, q=0, r=0, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=12, b=1, counter=1, counter++=0, p=1, q=0, r=0, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=11, b=1, counter=1, p=1, q=0, r=-1, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=11, b=1, counter=2, counter++=1, p=1, q=0, r=-1, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=10, b=1, counter=2, p=1, q=0, r=-2, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=10, b=1, counter=3, counter++=2, p=1, q=0, r=-2, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=9, b=1, counter=3, p=1, q=0, r=-3, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=9, b=1, counter=4, counter++=3, p=1, q=0, r=-3, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=8, b=1, counter=4, p=1, q=0, r=-4, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=8, b=1, counter=5, counter++=4, p=1, q=0, r=-4, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=7, b=1, counter=5, p=1, q=0, r=-5, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=7, b=1, counter=6, counter++=5, p=1, q=0, r=-5, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=6] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=6] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=6] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=6, b=1, counter=6, p=1, q=0, r=-6, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=6, b=1, counter=7, counter++=6, p=1, q=0, r=-6, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=5, b=1, counter=7, p=1, q=0, r=-7, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=5, b=1, counter=8, counter++=7, p=1, q=0, r=-7, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=4, b=1, counter=8, p=1, q=0, r=-8, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=4, b=1, counter=9, counter++=8, p=1, q=0, r=-8, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=3, b=1, counter=9, p=1, q=0, r=-9, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=3, b=1, counter=10, counter++=9, p=1, q=0, r=-9, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=2, b=1, counter=10, p=1, q=0, r=-10, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=2, b=1, counter=11, counter++=10, p=1, q=0, r=-10, s=1, x=12, y=1] [L34] COND FALSE !(counter++<10) [L53] CALL __VERIFIER_assert(a - b == 0) VAL [\old(cond)=0, counter=11] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L13] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.9s, OverallIterations: 13, TraceHistogramMax: 31, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 310 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 278 mSDsluCounter, 1663 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1206 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 624 IncrementalHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 457 mSDtfsCounter, 624 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 744 GetRequests, 651 SyntacticMatches, 5 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=503occurred in iteration=12, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 39 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 664 NumberOfCodeBlocks, 664 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 739 ConstructedInterpolants, 0 QuantifiedInterpolants, 2278 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1213 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 793/1151 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 19:49:09,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a48b5-959f-48cf-91aa-88099cdb6fb6/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE