./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/cohencu-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/cohencu-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro --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 bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:51:10,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:51:10,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:51:10,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:51:10,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:51:10,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:51:10,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:51:10,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:51:10,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:51:10,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:51:10,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:51:10,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:51:10,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:51:10,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:51:10,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:51:10,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:51:10,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:51:10,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:51:10,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:51:10,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:51:10,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:51:10,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:51:10,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:51:10,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:51:10,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:51:10,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:51:10,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:51:10,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:51:10,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:51:10,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:51:10,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:51:10,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:51:10,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:51:10,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:51:10,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:51:10,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:51:10,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:51:10,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:51:10,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:51:10,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:51:10,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:51:10,786 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:51:10,814 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:51:10,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:51:10,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:51:10,816 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:51:10,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:51:10,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:51:10,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:51:10,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:51:10,820 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:51:10,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:51:10,821 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:51:10,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:51:10,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:51:10,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:51:10,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:51:10,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:51:10,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:51:10,823 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:51:10,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:51:10,823 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:51:10,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:51:10,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:51:10,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:51:10,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:51:10,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:51:10,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:51:10,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:51:10,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:51:10,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:51:10,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:51:10,826 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:51:10,826 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:51:10,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:51:10,827 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_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff [2022-11-18 19:51:11,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:51:11,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:51:11,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:51:11,168 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:51:11,169 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:51:11,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/nla-digbench/cohencu-ll.c [2022-11-18 19:51:11,251 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/data/88e5b3ba0/12c6819ae9cb4f999623cad071fb9be6/FLAG8c654ad09 [2022-11-18 19:51:11,714 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:51:11,715 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/sv-benchmarks/c/nla-digbench/cohencu-ll.c [2022-11-18 19:51:11,723 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/data/88e5b3ba0/12c6819ae9cb4f999623cad071fb9be6/FLAG8c654ad09 [2022-11-18 19:51:12,112 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/data/88e5b3ba0/12c6819ae9cb4f999623cad071fb9be6 [2022-11-18 19:51:12,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:51:12,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:51:12,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:51:12,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:51:12,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:51:12,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:51:12" (1/1) ... [2022-11-18 19:51:12,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc6c730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:12, skipping insertion in model container [2022-11-18 19:51:12,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:51:12" (1/1) ... [2022-11-18 19:51:12,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:51:12,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:51:12,373 WARN L234 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_792edfe6-9732-468c-ab3a-5209016cef96/sv-benchmarks/c/nla-digbench/cohencu-ll.c[588,601] [2022-11-18 19:51:12,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:51:12,404 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:51:12,417 WARN L234 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_792edfe6-9732-468c-ab3a-5209016cef96/sv-benchmarks/c/nla-digbench/cohencu-ll.c[588,601] [2022-11-18 19:51:12,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:51:12,441 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:51:12,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:12 WrapperNode [2022-11-18 19:51:12,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:51:12,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:51:12,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:51:12,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:51:12,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:12" (1/1) ... [2022-11-18 19:51:12,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:12" (1/1) ... [2022-11-18 19:51:12,477 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-11-18 19:51:12,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:51:12,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:51:12,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:51:12,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:51:12,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:12" (1/1) ... [2022-11-18 19:51:12,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:12" (1/1) ... [2022-11-18 19:51:12,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:12" (1/1) ... [2022-11-18 19:51:12,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:12" (1/1) ... [2022-11-18 19:51:12,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:12" (1/1) ... [2022-11-18 19:51:12,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:12" (1/1) ... [2022-11-18 19:51:12,516 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:12" (1/1) ... [2022-11-18 19:51:12,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:12" (1/1) ... [2022-11-18 19:51:12,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:51:12,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:51:12,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:51:12,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:51:12,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:12" (1/1) ... [2022-11-18 19:51:12,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:51:12,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:12,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:51:12,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:51:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:51:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:51:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:51:12,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:51:12,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 19:51:12,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 19:51:12,683 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:51:12,684 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:51:12,851 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:51:12,858 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:51:12,858 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:51:12,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:51:12 BoogieIcfgContainer [2022-11-18 19:51:12,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:51:12,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:51:12,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:51:12,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:51:12,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:51:12" (1/3) ... [2022-11-18 19:51:12,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19646356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:51:12, skipping insertion in model container [2022-11-18 19:51:12,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:12" (2/3) ... [2022-11-18 19:51:12,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19646356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:51:12, skipping insertion in model container [2022-11-18 19:51:12,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:51:12" (3/3) ... [2022-11-18 19:51:12,871 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll.c [2022-11-18 19:51:12,893 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:51:12,893 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:51:12,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:51:12,999 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@920963c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:51:12,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:51:13,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 19:51:13,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:51:13,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:13,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:13,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:13,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:13,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1823012769, now seen corresponding path program 1 times [2022-11-18 19:51:13,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:13,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085637730] [2022-11-18 19:51:13,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:13,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:13,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:13,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085637730] [2022-11-18 19:51:13,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085637730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:13,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:13,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:51:13,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410948834] [2022-11-18 19:51:13,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:13,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:51:13,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:13,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:51:13,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:51:13,218 INFO L87 Difference]: Start difference. First operand has 25 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:13,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:13,244 INFO L93 Difference]: Finished difference Result 48 states and 85 transitions. [2022-11-18 19:51:13,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:51:13,246 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 19:51:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:13,255 INFO L225 Difference]: With dead ends: 48 [2022-11-18 19:51:13,255 INFO L226 Difference]: Without dead ends: 21 [2022-11-18 19:51:13,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:51:13,263 INFO L413 NwaCegarLoop]: 35 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, 35 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 [2022-11-18 19:51:13,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:13,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-18 19:51:13,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-18 19:51:13,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-18 19:51:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2022-11-18 19:51:13,310 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 7 [2022-11-18 19:51:13,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:13,311 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2022-11-18 19:51:13,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:13,312 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2022-11-18 19:51:13,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:51:13,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:13,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:13,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:51:13,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:13,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:13,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1811632607, now seen corresponding path program 1 times [2022-11-18 19:51:13,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:13,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250884971] [2022-11-18 19:51:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:13,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:13,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:13,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:13,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250884971] [2022-11-18 19:51:13,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250884971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:13,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:13,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:51:13,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261523842] [2022-11-18 19:51:13,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:13,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:51:13,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:13,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:51:13,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:51:13,591 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:13,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:13,775 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2022-11-18 19:51:13,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:51:13,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 19:51:13,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:13,776 INFO L225 Difference]: With dead ends: 27 [2022-11-18 19:51:13,777 INFO L226 Difference]: Without dead ends: 25 [2022-11-18 19:51:13,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:51:13,779 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:13,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 56 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-18 19:51:13,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-18 19:51:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-18 19:51:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-11-18 19:51:13,811 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 7 [2022-11-18 19:51:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:13,811 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-11-18 19:51:13,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:13,812 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-11-18 19:51:13,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 19:51:13,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:13,813 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:13,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:51:13,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:13,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:13,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1582559355, now seen corresponding path program 1 times [2022-11-18 19:51:13,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:13,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281203206] [2022-11-18 19:51:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:13,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:13,839 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:13,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451711652] [2022-11-18 19:51:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:13,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:13,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:13,865 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:13,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:51:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:13,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:51:13,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:14,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:14,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:14,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281203206] [2022-11-18 19:51:14,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:14,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451711652] [2022-11-18 19:51:14,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451711652] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:14,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:14,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-18 19:51:14,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644293099] [2022-11-18 19:51:14,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:14,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:51:14,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:14,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:51:14,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:51:14,470 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:51:15,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:15,076 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-11-18 19:51:15,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:51:15,078 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2022-11-18 19:51:15,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:15,080 INFO L225 Difference]: With dead ends: 50 [2022-11-18 19:51:15,080 INFO L226 Difference]: Without dead ends: 48 [2022-11-18 19:51:15,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:51:15,083 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 20 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:15,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 45 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:51:15,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-18 19:51:15,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2022-11-18 19:51:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-18 19:51:15,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 63 transitions. [2022-11-18 19:51:15,139 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 63 transitions. Word has length 12 [2022-11-18 19:51:15,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:15,139 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 63 transitions. [2022-11-18 19:51:15,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:51:15,140 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 63 transitions. [2022-11-18 19:51:15,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:51:15,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:15,141 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:15,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:51:15,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:15,350 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:15,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:15,350 INFO L85 PathProgramCache]: Analyzing trace with hash 424345951, now seen corresponding path program 1 times [2022-11-18 19:51:15,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:15,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437252315] [2022-11-18 19:51:15,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:15,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:15,375 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:15,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67805517] [2022-11-18 19:51:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:15,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:15,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:15,378 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:15,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:51:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:15,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:51:15,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:51:15,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:51:15,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:15,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437252315] [2022-11-18 19:51:15,684 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:15,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67805517] [2022-11-18 19:51:15,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67805517] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:15,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:15,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-18 19:51:15,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844131584] [2022-11-18 19:51:15,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:15,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:51:15,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:15,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:51:15,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:51:15,688 INFO L87 Difference]: Start difference. First operand 45 states and 63 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:51:16,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:16,076 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2022-11-18 19:51:16,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:51:16,077 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 17 [2022-11-18 19:51:16,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:16,078 INFO L225 Difference]: With dead ends: 52 [2022-11-18 19:51:16,079 INFO L226 Difference]: Without dead ends: 50 [2022-11-18 19:51:16,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:51:16,080 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:16,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 44 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:51:16,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-18 19:51:16,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-11-18 19:51:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-18 19:51:16,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions. [2022-11-18 19:51:16,114 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 17 [2022-11-18 19:51:16,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:16,114 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions. [2022-11-18 19:51:16,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:51:16,115 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions. [2022-11-18 19:51:16,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 19:51:16,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:16,117 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:16,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:16,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:16,323 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:16,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:16,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1752711045, now seen corresponding path program 1 times [2022-11-18 19:51:16,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:16,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746935554] [2022-11-18 19:51:16,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:16,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:16,339 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:16,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799678784] [2022-11-18 19:51:16,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:16,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:16,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:16,341 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:16,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:51:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:16,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:51:16,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:51:16,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:51:17,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:17,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746935554] [2022-11-18 19:51:17,007 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:17,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799678784] [2022-11-18 19:51:17,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799678784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:17,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:17,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-18 19:51:17,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655115492] [2022-11-18 19:51:17,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:17,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:51:17,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:17,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:51:17,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:51:17,009 INFO L87 Difference]: Start difference. First operand 49 states and 66 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:51:18,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:18,246 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2022-11-18 19:51:18,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:51:18,247 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 22 [2022-11-18 19:51:18,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:18,248 INFO L225 Difference]: With dead ends: 65 [2022-11-18 19:51:18,248 INFO L226 Difference]: Without dead ends: 56 [2022-11-18 19:51:18,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:51:18,250 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:18,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 41 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:51:18,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-18 19:51:18,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-18 19:51:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 31 states have internal predecessors, (31), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-18 19:51:18,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2022-11-18 19:51:18,270 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 22 [2022-11-18 19:51:18,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:18,273 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2022-11-18 19:51:18,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:51:18,273 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2022-11-18 19:51:18,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 19:51:18,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:18,275 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:18,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:18,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:18,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:18,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:18,482 INFO L85 PathProgramCache]: Analyzing trace with hash 190158181, now seen corresponding path program 1 times [2022-11-18 19:51:18,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:18,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462066210] [2022-11-18 19:51:18,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:18,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:18,495 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:18,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331631124] [2022-11-18 19:51:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:18,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:18,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:18,497 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:18,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:51:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:18,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:51:18,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 19:51:18,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 19:51:18,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:18,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462066210] [2022-11-18 19:51:18,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:18,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331631124] [2022-11-18 19:51:18,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331631124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:18,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:18,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-11-18 19:51:18,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182023248] [2022-11-18 19:51:18,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:18,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:51:18,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:18,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:51:18,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:51:18,954 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-18 19:51:21,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:51:21,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:21,628 INFO L93 Difference]: Finished difference Result 80 states and 97 transitions. [2022-11-18 19:51:21,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:51:21,629 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) Word has length 44 [2022-11-18 19:51:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:21,631 INFO L225 Difference]: With dead ends: 80 [2022-11-18 19:51:21,631 INFO L226 Difference]: Without dead ends: 78 [2022-11-18 19:51:21,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:51:21,632 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 74 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:21,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 52 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 277 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 19:51:21,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-18 19:51:21,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2022-11-18 19:51:21,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 40 states have (on average 1.075) internal successors, (43), 43 states have internal predecessors, (43), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-18 19:51:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 94 transitions. [2022-11-18 19:51:21,666 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 94 transitions. Word has length 44 [2022-11-18 19:51:21,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:21,667 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 94 transitions. [2022-11-18 19:51:21,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-18 19:51:21,667 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 94 transitions. [2022-11-18 19:51:21,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 19:51:21,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:21,669 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:21,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:21,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:21,875 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:21,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:21,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1122712219, now seen corresponding path program 2 times [2022-11-18 19:51:21,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:21,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196776145] [2022-11-18 19:51:21,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:21,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:21,889 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:21,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251985420] [2022-11-18 19:51:21,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:51:21,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:21,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:21,902 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:21,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:51:21,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:51:21,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:21,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 19:51:21,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-18 19:51:22,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-18 19:51:22,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:22,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196776145] [2022-11-18 19:51:22,348 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:22,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251985420] [2022-11-18 19:51:22,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251985420] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:22,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:22,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2022-11-18 19:51:22,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301666040] [2022-11-18 19:51:22,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:22,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:51:22,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:22,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:51:22,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:51:22,352 INFO L87 Difference]: Start difference. First operand 77 states and 94 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-18 19:51:23,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:23,338 INFO L93 Difference]: Finished difference Result 84 states and 100 transitions. [2022-11-18 19:51:23,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:51:23,338 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 5 states have call successors, (15) Word has length 54 [2022-11-18 19:51:23,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:23,340 INFO L225 Difference]: With dead ends: 84 [2022-11-18 19:51:23,340 INFO L226 Difference]: Without dead ends: 79 [2022-11-18 19:51:23,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:51:23,341 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 26 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:23,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 49 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:51:23,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-18 19:51:23,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-11-18 19:51:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 43 states have (on average 1.069767441860465) internal successors, (46), 46 states have internal predecessors, (46), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 19:51:23,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2022-11-18 19:51:23,385 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 54 [2022-11-18 19:51:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:23,386 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2022-11-18 19:51:23,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-18 19:51:23,388 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2022-11-18 19:51:23,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:51:23,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:23,395 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:23,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:23,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:23,602 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:23,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:23,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1898506858, now seen corresponding path program 1 times [2022-11-18 19:51:23,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:23,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187553944] [2022-11-18 19:51:23,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:23,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:23,631 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:23,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247183980] [2022-11-18 19:51:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:23,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:23,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:23,642 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:23,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:51:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:23,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 19:51:23,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:24,036 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 21 proven. 38 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:51:24,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:24,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:24,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187553944] [2022-11-18 19:51:24,343 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:24,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247183980] [2022-11-18 19:51:24,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247183980] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:24,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:51:24,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-11-18 19:51:24,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659209540] [2022-11-18 19:51:24,344 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:24,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:51:24,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:24,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:51:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:51:24,347 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 19:51:24,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:24,765 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2022-11-18 19:51:24,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:51:24,765 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 65 [2022-11-18 19:51:24,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:24,770 INFO L225 Difference]: With dead ends: 85 [2022-11-18 19:51:24,771 INFO L226 Difference]: Without dead ends: 83 [2022-11-18 19:51:24,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:51:24,775 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:24,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 50 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:51:24,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-18 19:51:24,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-18 19:51:24,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 46 states have (on average 1.065217391304348) internal successors, (49), 49 states have internal predecessors, (49), 24 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 19:51:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2022-11-18 19:51:24,831 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 65 [2022-11-18 19:51:24,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:24,832 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2022-11-18 19:51:24,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 19:51:24,832 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2022-11-18 19:51:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-18 19:51:24,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:24,834 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:24,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:25,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:25,041 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:25,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:25,041 INFO L85 PathProgramCache]: Analyzing trace with hash 161977518, now seen corresponding path program 1 times [2022-11-18 19:51:25,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:25,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230513941] [2022-11-18 19:51:25,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:25,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:25,053 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:25,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380046576] [2022-11-18 19:51:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:25,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:25,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:25,071 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:25,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:51:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:25,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 19:51:25,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-18 19:51:25,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-18 19:51:26,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:26,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230513941] [2022-11-18 19:51:26,253 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:26,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380046576] [2022-11-18 19:51:26,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380046576] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:26,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:26,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-18 19:51:26,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934206973] [2022-11-18 19:51:26,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:26,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:51:26,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:26,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:51:26,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:51:26,256 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 6 states have call predecessors, (24), 7 states have call successors, (24) [2022-11-18 19:51:27,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:27,449 INFO L93 Difference]: Finished difference Result 107 states and 130 transitions. [2022-11-18 19:51:27,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:51:27,450 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 6 states have call predecessors, (24), 7 states have call successors, (24) Word has length 70 [2022-11-18 19:51:27,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:27,451 INFO L225 Difference]: With dead ends: 107 [2022-11-18 19:51:27,451 INFO L226 Difference]: Without dead ends: 98 [2022-11-18 19:51:27,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:51:27,453 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:27,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 52 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:51:27,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-18 19:51:27,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-18 19:51:27,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 54 states have internal predecessors, (56), 32 states have call successors, (32), 13 states have call predecessors, (32), 13 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-18 19:51:27,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 119 transitions. [2022-11-18 19:51:27,504 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 119 transitions. Word has length 70 [2022-11-18 19:51:27,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:27,505 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 119 transitions. [2022-11-18 19:51:27,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 6 states have call predecessors, (24), 7 states have call successors, (24) [2022-11-18 19:51:27,506 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 119 transitions. [2022-11-18 19:51:27,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-18 19:51:27,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:27,509 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-18 19:51:27,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:27,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:27,716 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:27,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:27,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1175438523, now seen corresponding path program 3 times [2022-11-18 19:51:27,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:27,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263653714] [2022-11-18 19:51:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:27,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:27,743 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:27,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477005553] [2022-11-18 19:51:27,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:51:27,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:27,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:27,750 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:27,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:51:27,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:51:27,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:27,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 19:51:27,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-18 19:51:28,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-18 19:51:28,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:28,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263653714] [2022-11-18 19:51:28,960 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:28,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477005553] [2022-11-18 19:51:28,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477005553] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:28,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:28,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-11-18 19:51:28,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917558822] [2022-11-18 19:51:28,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:28,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:51:28,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:28,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:51:28,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:51:28,967 INFO L87 Difference]: Start difference. First operand 98 states and 119 transitions. Second operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-18 19:51:33,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:33,913 INFO L93 Difference]: Finished difference Result 120 states and 140 transitions. [2022-11-18 19:51:33,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:51:33,914 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) Word has length 76 [2022-11-18 19:51:33,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:33,915 INFO L225 Difference]: With dead ends: 120 [2022-11-18 19:51:33,915 INFO L226 Difference]: Without dead ends: 116 [2022-11-18 19:51:33,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:51:33,917 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 31 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:33,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 67 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-18 19:51:33,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-18 19:51:33,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-11-18 19:51:33,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 64 states have (on average 1.0625) internal successors, (68), 67 states have internal predecessors, (68), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-18 19:51:33,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 134 transitions. [2022-11-18 19:51:33,980 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 134 transitions. Word has length 76 [2022-11-18 19:51:33,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:33,982 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 134 transitions. [2022-11-18 19:51:33,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-18 19:51:33,982 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 134 transitions. [2022-11-18 19:51:33,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 19:51:33,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:33,986 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:34,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:34,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:51:34,192 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:34,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:34,193 INFO L85 PathProgramCache]: Analyzing trace with hash 253969820, now seen corresponding path program 2 times [2022-11-18 19:51:34,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:34,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749395167] [2022-11-18 19:51:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:34,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:34,203 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:34,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263724708] [2022-11-18 19:51:34,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:51:34,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:34,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:34,205 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:34,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:51:34,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:51:34,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:34,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-18 19:51:34,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 76 proven. 22 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2022-11-18 19:51:34,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:37,658 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2022-11-18 19:51:37,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:37,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749395167] [2022-11-18 19:51:37,659 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:37,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263724708] [2022-11-18 19:51:37,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263724708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:37,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:37,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2022-11-18 19:51:37,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991929901] [2022-11-18 19:51:37,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:37,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:51:37,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:37,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:51:37,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:51:37,662 INFO L87 Difference]: Start difference. First operand 116 states and 134 transitions. Second operand has 16 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 9 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) [2022-11-18 19:51:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:40,600 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2022-11-18 19:51:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:51:40,601 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 9 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) Word has length 92 [2022-11-18 19:51:40,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:40,602 INFO L225 Difference]: With dead ends: 126 [2022-11-18 19:51:40,602 INFO L226 Difference]: Without dead ends: 122 [2022-11-18 19:51:40,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:51:40,604 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 18 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:40,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 74 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 19:51:40,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-18 19:51:40,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2022-11-18 19:51:40,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 70 states have (on average 1.042857142857143) internal successors, (73), 72 states have internal predecessors, (73), 32 states have call successors, (32), 19 states have call predecessors, (32), 19 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-18 19:51:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 136 transitions. [2022-11-18 19:51:40,654 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 136 transitions. Word has length 92 [2022-11-18 19:51:40,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:40,654 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 136 transitions. [2022-11-18 19:51:40,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 9 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) [2022-11-18 19:51:40,655 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 136 transitions. [2022-11-18 19:51:40,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-18 19:51:40,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:40,656 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:40,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-18 19:51:40,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 19:51:40,862 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:40,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1712175254, now seen corresponding path program 1 times [2022-11-18 19:51:40,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:40,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985805645] [2022-11-18 19:51:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:40,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:40,874 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:40,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [71973319] [2022-11-18 19:51:40,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:40,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:40,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:40,876 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:40,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:51:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:40,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-18 19:51:40,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 104 proven. 110 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-18 19:51:41,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:47,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:47,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985805645] [2022-11-18 19:51:47,312 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:47,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71973319] [2022-11-18 19:51:47,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71973319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:47,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:51:47,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-11-18 19:51:47,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443036543] [2022-11-18 19:51:47,313 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:47,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:51:47,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:47,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:51:47,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=238, Unknown=1, NotChecked=0, Total=306 [2022-11-18 19:51:47,314 INFO L87 Difference]: Start difference. First operand 122 states and 136 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2022-11-18 19:51:48,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:48,423 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2022-11-18 19:51:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:51:48,424 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) Word has length 129 [2022-11-18 19:51:48,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:48,425 INFO L225 Difference]: With dead ends: 141 [2022-11-18 19:51:48,425 INFO L226 Difference]: Without dead ends: 123 [2022-11-18 19:51:48,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=91, Invalid=328, Unknown=1, NotChecked=0, Total=420 [2022-11-18 19:51:48,426 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 14 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:48,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:51:48,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-18 19:51:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-11-18 19:51:48,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 29 states have call successors, (29), 20 states have call predecessors, (29), 20 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-18 19:51:48,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2022-11-18 19:51:48,471 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 129 [2022-11-18 19:51:48,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:48,472 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2022-11-18 19:51:48,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2022-11-18 19:51:48,472 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2022-11-18 19:51:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-18 19:51:48,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:48,474 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 27, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:48,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:48,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:51:48,680 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:48,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:48,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1019061416, now seen corresponding path program 2 times [2022-11-18 19:51:48,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:48,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432073197] [2022-11-18 19:51:48,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:48,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:48,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:48,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642445304] [2022-11-18 19:51:48,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:51:48,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:48,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:48,711 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:48,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:51:48,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:51:48,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:48,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 19:51:48,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 128 proven. 74 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2022-11-18 19:51:49,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:50,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:50,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432073197] [2022-11-18 19:51:50,616 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:50,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642445304] [2022-11-18 19:51:50,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642445304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:50,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:51:50,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-11-18 19:51:50,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734045444] [2022-11-18 19:51:50,618 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:50,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:51:50,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:50,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:51:50,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:51:50,620 INFO L87 Difference]: Start difference. First operand 123 states and 132 transitions. Second operand has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 7 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) [2022-11-18 19:51:51,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:51,484 INFO L93 Difference]: Finished difference Result 156 states and 169 transitions. [2022-11-18 19:51:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:51:51,485 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 7 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) Word has length 151 [2022-11-18 19:51:51,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:51,486 INFO L225 Difference]: With dead ends: 156 [2022-11-18 19:51:51,487 INFO L226 Difference]: Without dead ends: 154 [2022-11-18 19:51:51,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:51:51,492 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 13 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:51,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 106 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:51:51,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-18 19:51:51,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2022-11-18 19:51:51,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 90 states have (on average 1.0333333333333334) internal successors, (93), 92 states have internal predecessors, (93), 37 states have call successors, (37), 25 states have call predecessors, (37), 25 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-11-18 19:51:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 166 transitions. [2022-11-18 19:51:51,568 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 166 transitions. Word has length 151 [2022-11-18 19:51:51,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:51,569 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 166 transitions. [2022-11-18 19:51:51,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 7 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) [2022-11-18 19:51:51,570 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 166 transitions. [2022-11-18 19:51:51,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-18 19:51:51,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:51,573 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 28, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:51,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:51,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:51:51,780 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:51,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:51,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1062647964, now seen corresponding path program 2 times [2022-11-18 19:51:51,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:51,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740046424] [2022-11-18 19:51:51,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:51,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:51,797 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:51,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350052573] [2022-11-18 19:51:51,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:51:51,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:51,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:51,804 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:51,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:51:51,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:51:51,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:51,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 19:51:51,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:52,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 130 proven. 77 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2022-11-18 19:51:52,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 130 proven. 49 refuted. 28 times theorem prover too weak. 1431 trivial. 0 not checked. [2022-11-18 19:52:40,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:40,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740046424] [2022-11-18 19:52:40,516 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:52:40,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350052573] [2022-11-18 19:52:40,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350052573] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:40,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:52:40,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2022-11-18 19:52:40,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524054018] [2022-11-18 19:52:40,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:40,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:52:40,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:40,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:52:40,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=351, Unknown=11, NotChecked=0, Total=462 [2022-11-18 19:52:40,520 INFO L87 Difference]: Start difference. First operand 153 states and 166 transitions. Second operand has 22 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 14 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 12 states have call predecessors, (56), 14 states have call successors, (56) [2022-11-18 19:54:04,126 WARN L233 SmtUtils]: Spent 1.34m on a formula simplification. DAG size of input: 102 DAG size of output: 86 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:54:06,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:56:08,468 WARN L233 SmtUtils]: Spent 1.99m on a formula simplification. DAG size of input: 109 DAG size of output: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:56:10,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:56:12,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:56:14,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:56:16,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:58:08,451 WARN L233 SmtUtils]: Spent 1.81m on a formula simplification. DAG size of input: 107 DAG size of output: 91 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:58:10,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:58:12,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:58:14,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:58:19,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:58:22,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:58:24,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:58:26,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:58:29,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:58:31,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:58:33,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:58:35,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:58:38,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 19:58:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:38,857 INFO L93 Difference]: Finished difference Result 178 states and 187 transitions. [2022-11-18 19:58:38,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:58:38,858 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 14 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 12 states have call predecessors, (56), 14 states have call successors, (56) Word has length 156 [2022-11-18 19:58:38,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:38,859 INFO L225 Difference]: With dead ends: 178 [2022-11-18 19:58:38,859 INFO L226 Difference]: Without dead ends: 157 [2022-11-18 19:58:38,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 349.6s TimeCoverageRelationStatistics Valid=178, Invalid=565, Unknown=13, NotChecked=0, Total=756 [2022-11-18 19:58:38,861 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 35 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 130 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:38,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 96 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 551 Invalid, 16 Unknown, 0 Unchecked, 42.0s Time] [2022-11-18 19:58:38,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-18 19:58:38,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2022-11-18 19:58:38,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 33 states have call successors, (33), 27 states have call predecessors, (33), 26 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-18 19:58:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 161 transitions. [2022-11-18 19:58:38,921 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 161 transitions. Word has length 156 [2022-11-18 19:58:38,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:38,923 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 161 transitions. [2022-11-18 19:58:38,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 14 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (56), 12 states have call predecessors, (56), 14 states have call successors, (56) [2022-11-18 19:58:38,923 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 161 transitions. [2022-11-18 19:58:38,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 19:58:38,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:38,926 INFO L195 NwaCegarLoop]: trace histogram [33, 32, 32, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:38,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:39,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:39,126 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:58:39,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:39,127 INFO L85 PathProgramCache]: Analyzing trace with hash -965723090, now seen corresponding path program 3 times [2022-11-18 19:58:39,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:39,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252501599] [2022-11-18 19:58:39,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:39,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:39,137 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:58:39,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862205782] [2022-11-18 19:58:39,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:58:39,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:39,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:39,139 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:39,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:58:40,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:58:40,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:58:40,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-18 19:58:40,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2153 backedges. 381 proven. 85 refuted. 0 times theorem prover too weak. 1687 trivial. 0 not checked. [2022-11-18 19:59:29,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:46,955 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (div (- |c_ULTIMATE.start_main_~z~0#1|) (- 6)))) (or (not (= (+ (* |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) 12) (+ (* |c_ULTIMATE.start_main_~y~0#1| 12) (* 6 |c_ULTIMATE.start_main_~z~0#1|)))) (= (* |c_ULTIMATE.start_main_~y~0#1| 2) (+ 2 (* |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~z~0#1|))) (not (= (mod (* 5 |c_ULTIMATE.start_main_~z~0#1|) 6) 0)) (not (<= .cse0 (+ |c_ULTIMATE.start_main_~a~0#1| 1))) (<= .cse0 |c_ULTIMATE.start_main_~a~0#1|))) is different from true [2022-11-18 19:59:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2153 backedges. 247 proven. 39 refuted. 0 times theorem prover too weak. 1866 trivial. 1 not checked. [2022-11-18 19:59:55,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:55,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252501599] [2022-11-18 19:59:55,424 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:55,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862205782] [2022-11-18 19:59:55,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862205782] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:55,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:55,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2022-11-18 19:59:55,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94674542] [2022-11-18 19:59:55,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:55,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:59:55,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:55,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:59:55,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=241, Unknown=2, NotChecked=32, Total=342 [2022-11-18 19:59:55,428 INFO L87 Difference]: Start difference. First operand 155 states and 161 transitions. Second operand has 19 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (32), 10 states have call predecessors, (32), 11 states have call successors, (32) [2022-11-18 20:00:01,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 20:00:08,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 20:00:10,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 20:00:15,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 20:00:17,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 20:00:26,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 20:00:28,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 20:00:30,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 20:00:32,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 20:00:32,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:32,680 INFO L93 Difference]: Finished difference Result 163 states and 167 transitions. [2022-11-18 20:00:32,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:00:32,681 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (32), 10 states have call predecessors, (32), 11 states have call successors, (32) Word has length 178 [2022-11-18 20:00:32,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:32,682 INFO L225 Difference]: With dead ends: 163 [2022-11-18 20:00:32,682 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 20:00:32,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 338 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=116, Invalid=392, Unknown=2, NotChecked=42, Total=552 [2022-11-18 20:00:32,684 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 18 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 58 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:32,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 76 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 248 Invalid, 7 Unknown, 39 Unchecked, 23.7s Time] [2022-11-18 20:00:32,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 20:00:32,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 20:00:32,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:32,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 20:00:32,685 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2022-11-18 20:00:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:32,685 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 20:00:32,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.75) internal successors, (28), 13 states have internal predecessors, (28), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (32), 10 states have call predecessors, (32), 11 states have call successors, (32) [2022-11-18 20:00:32,686 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 20:00:32,686 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 20:00:32,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 20:00:32,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:00:32,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:00:32,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-18 20:00:58,079 WARN L233 SmtUtils]: Spent 19.92s on a formula simplification. DAG size of input: 241 DAG size of output: 73 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-18 20:01:43,530 WARN L233 SmtUtils]: Spent 45.45s on a formula simplification. DAG size of input: 246 DAG size of output: 107 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-18 20:02:51,335 WARN L233 SmtUtils]: Spent 1.13m on a formula simplification. DAG size of input: 243 DAG size of output: 123 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-18 20:03:38,439 WARN L233 SmtUtils]: Spent 46.98s on a formula simplification. DAG size of input: 246 DAG size of output: 107 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-18 20:04:40,214 WARN L233 SmtUtils]: Spent 1.03m on a formula simplification. DAG size of input: 243 DAG size of output: 103 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-18 20:05:34,956 WARN L233 SmtUtils]: Spent 54.74s on a formula simplification. DAG size of input: 217 DAG size of output: 108 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-18 20:05:49,685 WARN L233 SmtUtils]: Spent 14.73s on a formula simplification. DAG size of input: 118 DAG size of output: 50 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-18 20:05:57,715 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 156 DAG size of output: 66 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-18 20:06:09,888 WARN L233 SmtUtils]: Spent 12.17s on a formula simplification. DAG size of input: 243 DAG size of output: 78 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-18 20:06:09,893 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (let ((.cse7 (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|))) (.cse9 (< |ULTIMATE.start_main_~a~0#1| 0))) (or (let ((.cse0 (div |ULTIMATE.start_main_~z~0#1| 6))) (let ((.cse1 (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse6 (* |ULTIMATE.start_main_~z~0#1| 4)) (.cse5 (* (* .cse0 |ULTIMATE.start_main_~x~0#1|) 18)) (.cse4 (* .cse0 |ULTIMATE.start_main_~y~0#1|))) (and (= (+ (* .cse0 18) .cse1 (* 2 .cse2) (* .cse3 4) 8) (+ (* 46 |ULTIMATE.start_main_~y~0#1|) (* .cse4 18) .cse5 (* |ULTIMATE.start_main_~x~0#1| 36) (* |ULTIMATE.start_main_~z~0#1| 10))) (= (+ .cse3 6 .cse2) (+ .cse6 (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ .cse1 (* .cse3 16) 134 (* 32 .cse2)) (+ (* .cse0 414) (* |ULTIMATE.start_main_~x~0#1| 90) (* 108 (* .cse0 |ULTIMATE.start_main_~z~0#1|)) (* |ULTIMATE.start_main_~y~0#1| 226) .cse6 .cse5 (* 72 .cse4))) (let ((.cse8 (- |ULTIMATE.start_main_~a~0#1|))) (or (and .cse7 (<= (+ (* 65536 (div (+ .cse8 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) .cse9) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse8 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|))))))) (and .cse7 (= |ULTIMATE.start_main_~n~0#1| 0) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|))) (= |ULTIMATE.start_main_~x~0#1| 0) .cse9 (not (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767)) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-11-18 20:06:09,893 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-18 20:06:09,894 INFO L895 garLoopResultBuilder]: At program point L33-1(line 33) the Hoare annotation is: (let ((.cse3 (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|))) (.cse1 (* 2 |ULTIMATE.start_main_~z~0#1|)) (.cse5 (< |ULTIMATE.start_main_~a~0#1| 0))) (or (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= (+ .cse0 .cse1) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse2)) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse2 (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (let ((.cse4 (- |ULTIMATE.start_main_~a~0#1|))) (or (and .cse3 (<= (+ (* 65536 (div (+ .cse4 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) .cse5) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse4 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|)))))) (and .cse3 (= |ULTIMATE.start_main_~n~0#1| 0) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1)) (= |ULTIMATE.start_main_~x~0#1| 0) .cse5 (not (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767)) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-11-18 20:06:09,894 INFO L902 garLoopResultBuilder]: At program point L54(lines 22 55) the Hoare annotation is: true [2022-11-18 20:06:09,894 INFO L899 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2022-11-18 20:06:09,894 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2022-11-18 20:06:09,894 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (or (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= (+ .cse0 (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse1)) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse1 (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (let ((.cse2 (- |ULTIMATE.start_main_~a~0#1|))) (or (and (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|)) (<= (+ (* 65536 (div (+ .cse2 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) (< |ULTIMATE.start_main_~a~0#1| 0)) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse2 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|)))))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2022-11-18 20:06:09,895 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse8 (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|))) (.cse10 (< |ULTIMATE.start_main_~a~0#1| 0))) (or (let ((.cse0 (div |ULTIMATE.start_main_~z~0#1| 6))) (let ((.cse7 (* |ULTIMATE.start_main_~x~0#1| 18)) (.cse1 (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse6 (* |ULTIMATE.start_main_~z~0#1| 4)) (.cse5 (* (* .cse0 |ULTIMATE.start_main_~x~0#1|) 18)) (.cse4 (* .cse0 |ULTIMATE.start_main_~y~0#1|))) (and (= (+ (* .cse0 18) .cse1 (* 2 .cse2) (* .cse3 4) 8) (+ (* 46 |ULTIMATE.start_main_~y~0#1|) (* .cse4 18) .cse5 (* |ULTIMATE.start_main_~x~0#1| 36) (* |ULTIMATE.start_main_~z~0#1| 10))) (= (+ .cse3 6 .cse2) (+ .cse6 .cse7 (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (or (= (+ .cse1 (* 3 |ULTIMATE.start_main_~z~0#1|)) (+ (* 3 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) .cse7 (* |ULTIMATE.start_main_~y~0#1| 10) 10)) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)) (= (+ .cse1 (* .cse3 16) 134 (* 32 .cse2)) (+ (* .cse0 414) (* |ULTIMATE.start_main_~x~0#1| 90) (* 108 (* .cse0 |ULTIMATE.start_main_~z~0#1|)) (* |ULTIMATE.start_main_~y~0#1| 226) .cse6 .cse5 (* 72 .cse4))) (let ((.cse9 (- |ULTIMATE.start_main_~a~0#1|))) (or (and .cse8 (<= (+ (* 65536 (div (+ .cse9 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) .cse10) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse9 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|)))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))))) (and .cse8 (= |ULTIMATE.start_main_~n~0#1| 0) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|))) (= |ULTIMATE.start_main_~x~0#1| 0) .cse10 (not (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767)) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-11-18 20:06:09,895 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse6 (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|))) (.cse1 (* 2 |ULTIMATE.start_main_~z~0#1|)) (.cse8 (< |ULTIMATE.start_main_~a~0#1| 0))) (or (let ((.cse2 (* |ULTIMATE.start_main_~x~0#1| 18)) (.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse3 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse4 (* |ULTIMATE.start_main_~z~0#1| 4))) (and (= (+ .cse0 .cse1) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse2)) (= (+ .cse0 6 .cse3) (+ .cse4 .cse2 (* |ULTIMATE.start_main_~y~0#1| 24))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* .cse0 16) 134 (* 32 .cse3)) (let ((.cse5 (div |ULTIMATE.start_main_~z~0#1| 6))) (+ (* .cse5 414) (* |ULTIMATE.start_main_~x~0#1| 90) (* 108 (* .cse5 |ULTIMATE.start_main_~z~0#1|)) (* |ULTIMATE.start_main_~y~0#1| 226) .cse4 (* (* .cse5 |ULTIMATE.start_main_~x~0#1|) 18) (* 72 (* .cse5 |ULTIMATE.start_main_~y~0#1|))))) (let ((.cse7 (- |ULTIMATE.start_main_~a~0#1|))) (or (and .cse6 (<= (+ (* 65536 (div (+ .cse7 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) .cse8) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse7 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|)))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (and .cse6 (= |ULTIMATE.start_main_~n~0#1| 0) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1)) (= |ULTIMATE.start_main_~x~0#1| 0) .cse8 (not (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767)) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-11-18 20:06:09,895 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-18 20:06:09,895 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 45) the Hoare annotation is: (let ((.cse7 (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|))) (.cse9 (< |ULTIMATE.start_main_~a~0#1| 0))) (or (let ((.cse0 (div |ULTIMATE.start_main_~z~0#1| 6))) (let ((.cse1 (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse6 (* |ULTIMATE.start_main_~z~0#1| 4)) (.cse5 (* (* .cse0 |ULTIMATE.start_main_~x~0#1|) 18)) (.cse4 (* .cse0 |ULTIMATE.start_main_~y~0#1|))) (and (= (+ (* .cse0 18) .cse1 (* 2 .cse2) (* .cse3 4) 8) (+ (* 46 |ULTIMATE.start_main_~y~0#1|) (* .cse4 18) .cse5 (* |ULTIMATE.start_main_~x~0#1| 36) (* |ULTIMATE.start_main_~z~0#1| 10))) (= (+ .cse3 6 .cse2) (+ .cse6 (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ .cse1 (* .cse3 16) 134 (* 32 .cse2)) (+ (* .cse0 414) (* |ULTIMATE.start_main_~x~0#1| 90) (* 108 (* .cse0 |ULTIMATE.start_main_~z~0#1|)) (* |ULTIMATE.start_main_~y~0#1| 226) .cse6 .cse5 (* 72 .cse4))) (let ((.cse8 (- |ULTIMATE.start_main_~a~0#1|))) (or (and .cse7 (<= (+ (* 65536 (div (+ .cse8 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) .cse9) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse8 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|))))))) (and .cse7 (= |ULTIMATE.start_main_~n~0#1| 0) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|))) (= |ULTIMATE.start_main_~x~0#1| 0) .cse9 (not (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767)) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-11-18 20:06:09,896 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-18 20:06:09,896 INFO L895 garLoopResultBuilder]: At program point L32-3(lines 32 45) the Hoare annotation is: (or (let ((.cse0 (div |ULTIMATE.start_main_~z~0#1| 6))) (let ((.cse1 (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse5 (* (* .cse0 |ULTIMATE.start_main_~x~0#1|) 18)) (.cse4 (* .cse0 |ULTIMATE.start_main_~y~0#1|))) (and (= (+ (* .cse0 18) .cse1 (* 2 .cse2) (* .cse3 4) 8) (+ (* 46 |ULTIMATE.start_main_~y~0#1|) (* .cse4 18) .cse5 (* |ULTIMATE.start_main_~x~0#1| 36) (* |ULTIMATE.start_main_~z~0#1| 10))) (= (+ .cse3 (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) (* |ULTIMATE.start_main_~x~0#1| 18))) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ .cse1 (* .cse3 16) 134 (* 32 .cse2)) (+ (* .cse0 414) (* |ULTIMATE.start_main_~x~0#1| 90) (* 108 (* .cse0 |ULTIMATE.start_main_~z~0#1|)) (* |ULTIMATE.start_main_~y~0#1| 226) (* |ULTIMATE.start_main_~z~0#1| 4) .cse5 (* 72 .cse4))) (let ((.cse6 (- |ULTIMATE.start_main_~a~0#1|))) (or (and (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|)) (<= (+ (* 65536 (div (+ .cse6 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) (< |ULTIMATE.start_main_~a~0#1| 0)) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse6 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|)))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2022-11-18 20:06:09,896 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-18 20:06:09,896 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (and (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2022-11-18 20:06:09,896 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse2 (* 6 |ULTIMATE.start_main_~n~0#1|))) (let ((.cse0 (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse2))) (.cse1 (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) .cse0 (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|))) .cse1) (and (= |ULTIMATE.start_main_~x~0#1| 1) .cse0 (= 6 .cse2) .cse1)))) [2022-11-18 20:06:09,897 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (or (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= (+ .cse0 (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse1)) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse1 (* |ULTIMATE.start_main_~y~0#1| 24))) (let ((.cse2 (- |ULTIMATE.start_main_~a~0#1|))) (or (and (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|)) (<= (+ (* 65536 (div (+ .cse2 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) (< |ULTIMATE.start_main_~a~0#1| 0)) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse2 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|)))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2022-11-18 20:06:09,897 INFO L899 garLoopResultBuilder]: For program point L37(lines 32 45) no Hoare annotation was computed. [2022-11-18 20:06:09,897 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse3 (<= 0 (+ 65536 |ULTIMATE.start_main_~a~0#1|))) (.cse1 (* 2 |ULTIMATE.start_main_~z~0#1|)) (.cse5 (< |ULTIMATE.start_main_~a~0#1| 0))) (or (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= (+ .cse0 .cse1) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse2)) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse2 (* |ULTIMATE.start_main_~y~0#1| 24))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (let ((.cse4 (- |ULTIMATE.start_main_~a~0#1|))) (or (and .cse3 (<= (+ (* 65536 (div (+ .cse4 (- 32769)) 65536)) |ULTIMATE.start_main_~a~0#1| 65537) 0) .cse5) (and (< |ULTIMATE.start_main_~a~0#1| 65536) (<= (+ 32769 (* 65536 (div (+ .cse4 (- 1)) 65536)) |ULTIMATE.start_main_~a~0#1|) 0) (<= 0 |ULTIMATE.start_main_~a~0#1|)))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (and .cse3 (= |ULTIMATE.start_main_~n~0#1| 0) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1)) (= |ULTIMATE.start_main_~x~0#1| 0) .cse5 (not (<= (mod |ULTIMATE.start_main_~a~0#1| 65536) 32767)) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-11-18 20:06:09,897 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-11-18 20:06:09,897 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-11-18 20:06:09,897 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-11-18 20:06:09,897 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-11-18 20:06:09,898 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-11-18 20:06:09,898 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-18 20:06:09,901 INFO L444 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-18 20:06:09,904 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:06:09,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:06:09 BoogieIcfgContainer [2022-11-18 20:06:09,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:06:09,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:06:09,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:06:09,931 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:06:09,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:51:12" (3/4) ... [2022-11-18 20:06:09,937 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:06:09,945 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-18 20:06:09,949 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-18 20:06:09,949 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-18 20:06:09,949 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:06:09,950 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:06:09,990 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:06:09,990 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:06:09,991 INFO L158 Benchmark]: Toolchain (without parser) took 897874.19ms. Allocated memory was 113.2MB in the beginning and 172.0MB in the end (delta: 58.7MB). Free memory was 71.5MB in the beginning and 64.5MB in the end (delta: 7.0MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. [2022-11-18 20:06:09,991 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 113.2MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:06:09,991 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.87ms. Allocated memory is still 113.2MB. Free memory was 71.3MB in the beginning and 87.9MB in the end (delta: -16.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:06:09,992 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.97ms. Allocated memory is still 113.2MB. Free memory was 87.9MB in the beginning and 86.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:06:09,992 INFO L158 Benchmark]: Boogie Preprocessor took 47.76ms. Allocated memory is still 113.2MB. Free memory was 86.3MB in the beginning and 85.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:06:09,993 INFO L158 Benchmark]: RCFGBuilder took 334.07ms. Allocated memory is still 113.2MB. Free memory was 85.1MB in the beginning and 73.7MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:06:09,993 INFO L158 Benchmark]: TraceAbstraction took 897067.03ms. Allocated memory was 113.2MB in the beginning and 172.0MB in the end (delta: 58.7MB). Free memory was 73.3MB in the beginning and 66.6MB in the end (delta: 6.7MB). Peak memory consumption was 88.6MB. Max. memory is 16.1GB. [2022-11-18 20:06:09,993 INFO L158 Benchmark]: Witness Printer took 59.49ms. Allocated memory is still 172.0MB. Free memory was 66.6MB in the beginning and 64.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:06:09,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 113.2MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.87ms. Allocated memory is still 113.2MB. Free memory was 71.3MB in the beginning and 87.9MB in the end (delta: -16.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.97ms. Allocated memory is still 113.2MB. Free memory was 87.9MB in the beginning and 86.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.76ms. Allocated memory is still 113.2MB. Free memory was 86.3MB in the beginning and 85.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 334.07ms. Allocated memory is still 113.2MB. Free memory was 85.1MB in the beginning and 73.7MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 897067.03ms. Allocated memory was 113.2MB in the beginning and 172.0MB in the end (delta: 58.7MB). Free memory was 73.3MB in the beginning and 66.6MB in the end (delta: 6.7MB). Peak memory consumption was 88.6MB. Max. memory is 16.1GB. * Witness Printer took 59.49ms. Allocated memory is still 172.0MB. Free memory was 66.6MB in the beginning and 64.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 896.9s, OverallIterations: 15, TraceHistogramMax: 33, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 413.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 337.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 mSolverCounterUnknown, 399 SdHoareTripleChecker+Valid, 80.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 294 mSDsluCounter, 930 SdHoareTripleChecker+Invalid, 79.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 39 IncrementalHoareTripleChecker+Unchecked, 557 mSDsCounter, 666 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4543 IncrementalHoareTripleChecker+Invalid, 5272 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 666 mSolverCounterUnsat, 373 mSDtfsCounter, 4543 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1951 GetRequests, 1723 SyntacticMatches, 3 SemanticMatches, 225 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 391.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=14, InterpolantAutomatonStates: 150, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 15 MinimizatonAttempts, 8 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 83 PreInvPairs, 149 NumberOfFragments, 1793 HoareAnnotationTreeSize, 83 FomulaSimplifications, 1383 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 14 FomulaSimplificationsInter, 11336 FormulaSimplificationTreeSizeReductionInter, 336.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 139.6s InterpolantComputationTime, 1080 NumberOfCodeBlocks, 914 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1776 ConstructedInterpolants, 0 QuantifiedInterpolants, 12365 SizeOfPredicates, 55 NumberOfNonLiveVariables, 2170 ConjunctsInSsa, 418 ConjunctsInUnsatCore, 25 InterpolantComputations, 2 PerfectInterpolantSequences, 12641/13421 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((((z / 6 * 18 + 2 * (y * y) + 2 * (z * z) + y * z * 4 + 8 == 46 * y + z / 6 * y * 18 + z / 6 * x * 18 + x * 36 + z * 10 && y * z + 6 + z * z == z * 4 + x * 18 + y * 24) && z == 6 + 6 * n) && n <= a + 1) && 2 * (y * y) + y * z * 16 + 134 + 32 * (z * z) == z / 6 * 414 + x * 90 + 108 * (z / 6 * z) + y * 226 + z * 4 + z / 6 * x * 18 + 72 * (z / 6 * y)) && (((0 <= 65536 + a && 65536 * ((-a + -32769) / 65536) + a + 65537 <= 0) && a < 0) || ((a < 65536 && 32769 + 65536 * ((-a + -1) / 65536) + a <= 0) && 0 <= a))) || ((((((0 <= 65536 + a && n == 0) && 2 * y + 6 * a + 10 == a * z + 2 * z) && x == 0) && a < 0) && !(a % 65536 <= 32767)) && 6 == z) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-18 20:06:10,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792edfe6-9732-468c-ab3a-5209016cef96/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE