./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN --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 185af411ffb66b9762afca1cabf119211700e2cdb0b48054cece4906f7290e44 --- 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-6b4ec56 [2022-11-20 11:09:09,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:09:09,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:09:09,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:09:09,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:09:09,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:09:09,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:09:09,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:09:09,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:09:09,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:09:09,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:09:09,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:09:09,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:09:09,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:09:09,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:09:09,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:09:09,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:09:09,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:09:09,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:09:09,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:09:09,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:09:09,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:09:09,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:09:09,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:09:09,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:09:09,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:09:09,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:09:09,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:09:09,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:09:09,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:09:09,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:09:09,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:09:09,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:09:09,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:09:09,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:09:09,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:09:09,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:09:09,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:09:09,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:09:09,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:09:09,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:09:09,718 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:09:09,758 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:09:09,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:09:09,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:09:09,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:09:09,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:09:09,760 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:09:09,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:09:09,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:09:09,761 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:09:09,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:09:09,762 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:09:09,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:09:09,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:09:09,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:09:09,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:09:09,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:09:09,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:09:09,764 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:09:09,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:09:09,764 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:09:09,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:09:09,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:09:09,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:09:09,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:09:09,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:09:09,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:09:09,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:09:09,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:09:09,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:09:09,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:09:09,767 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:09:09,767 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:09:09,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:09:09,767 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_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 185af411ffb66b9762afca1cabf119211700e2cdb0b48054cece4906f7290e44 [2022-11-20 11:09:10,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:09:10,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:09:10,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:09:10,113 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:09:10,116 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:09:10,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2022-11-20 11:09:13,143 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:09:13,433 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:09:13,433 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2022-11-20 11:09:13,440 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/data/a754c4e2d/046fb040856e471f912e958e90c5dfa2/FLAG43a078728 [2022-11-20 11:09:13,455 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/data/a754c4e2d/046fb040856e471f912e958e90c5dfa2 [2022-11-20 11:09:13,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:09:13,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:09:13,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:09:13,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:09:13,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:09:13,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:09:13" (1/1) ... [2022-11-20 11:09:13,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3706a01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:13, skipping insertion in model container [2022-11-20 11:09:13,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:09:13" (1/1) ... [2022-11-20 11:09:13,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:09:13,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:09:13,695 WARN L237 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_29f89303-3c00-4127-a297-2c1b59636e52/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2022-11-20 11:09:13,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:09:13,732 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:09:13,745 WARN L237 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_29f89303-3c00-4127-a297-2c1b59636e52/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2022-11-20 11:09:13,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:09:13,772 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:09:13,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:13 WrapperNode [2022-11-20 11:09:13,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:09:13,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:09:13,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:09:13,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:09:13,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:13" (1/1) ... [2022-11-20 11:09:13,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:13" (1/1) ... [2022-11-20 11:09:13,829 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2022-11-20 11:09:13,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:09:13,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:09:13,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:09:13,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:09:13,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:13" (1/1) ... [2022-11-20 11:09:13,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:13" (1/1) ... [2022-11-20 11:09:13,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:13" (1/1) ... [2022-11-20 11:09:13,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:13" (1/1) ... [2022-11-20 11:09:13,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:13" (1/1) ... [2022-11-20 11:09:13,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:13" (1/1) ... [2022-11-20 11:09:13,859 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:13" (1/1) ... [2022-11-20 11:09:13,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:13" (1/1) ... [2022-11-20 11:09:13,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:09:13,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:09:13,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:09:13,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:09:13,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:13" (1/1) ... [2022-11-20 11:09:13,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:09:13,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:13,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:09:13,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:09:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:09:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 11:09:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 11:09:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:09:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:09:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:09:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 11:09:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 11:09:14,013 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:09:14,016 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:09:14,304 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:09:14,310 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:09:14,310 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:09:14,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:09:14 BoogieIcfgContainer [2022-11-20 11:09:14,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:09:14,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:09:14,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:09:14,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:09:14,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:09:13" (1/3) ... [2022-11-20 11:09:14,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a142f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:09:14, skipping insertion in model container [2022-11-20 11:09:14,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:13" (2/3) ... [2022-11-20 11:09:14,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a142f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:09:14, skipping insertion in model container [2022-11-20 11:09:14,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:09:14" (3/3) ... [2022-11-20 11:09:14,321 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound2.c [2022-11-20 11:09:14,341 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:09:14,341 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:09:14,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:09:14,426 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;@19eda0f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:09:14,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:09:14,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 11:09:14,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:09:14,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:14,452 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:14,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:14,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:14,458 INFO L85 PathProgramCache]: Analyzing trace with hash -645822239, now seen corresponding path program 1 times [2022-11-20 11:09:14,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:14,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630484360] [2022-11-20 11:09:14,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:14,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:14,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:14,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630484360] [2022-11-20 11:09:14,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 11:09:14,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745884251] [2022-11-20 11:09:14,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:14,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:14,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:14,645 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:09:14,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:09:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:14,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 11:09:14,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:09:14,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:09:14,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745884251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:14,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:14,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:09:14,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228167560] [2022-11-20 11:09:14,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:14,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:09:14,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:14,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:09:14,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:09:14,832 INFO L87 Difference]: Start difference. First operand has 33 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:09:14,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:14,867 INFO L93 Difference]: Finished difference Result 63 states and 107 transitions. [2022-11-20 11:09:14,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:09:14,869 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-11-20 11:09:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:14,877 INFO L225 Difference]: With dead ends: 63 [2022-11-20 11:09:14,877 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 11:09:14,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:09:14,884 INFO L413 NwaCegarLoop]: 44 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, 44 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 [2022-11-20 11:09:14,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:14,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 11:09:14,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-20 11:09:14,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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) [2022-11-20 11:09:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2022-11-20 11:09:14,926 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 19 [2022-11-20 11:09:14,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:14,927 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2022-11-20 11:09:14,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:09:14,927 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2022-11-20 11:09:14,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 11:09:14,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:14,929 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:14,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:09:15,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 11:09:15,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:15,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:15,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1757085840, now seen corresponding path program 1 times [2022-11-20 11:09:15,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:15,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949530472] [2022-11-20 11:09:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:15,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:15,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:09:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:15,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:09:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:09:15,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:15,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949530472] [2022-11-20 11:09:15,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949530472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:15,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:15,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:09:15,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075952668] [2022-11-20 11:09:15,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:15,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:09:15,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:15,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:09:15,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:09:15,847 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:09:18,153 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 [] [2022-11-20 11:09:20,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:09:22,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:09:24,176 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 [] [2022-11-20 11:09:27,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:27,326 INFO L93 Difference]: Finished difference Result 64 states and 94 transitions. [2022-11-20 11:09:27,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:09:27,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-11-20 11:09:27,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:27,329 INFO L225 Difference]: With dead ends: 64 [2022-11-20 11:09:27,329 INFO L226 Difference]: Without dead ends: 46 [2022-11-20 11:09:27,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:09:27,331 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 10 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 18 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:27,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 157 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 85 Invalid, 4 Unknown, 0 Unchecked, 11.4s Time] [2022-11-20 11:09:27,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-20 11:09:27,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-11-20 11:09:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-20 11:09:27,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 60 transitions. [2022-11-20 11:09:27,351 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 60 transitions. Word has length 20 [2022-11-20 11:09:27,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:27,351 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 60 transitions. [2022-11-20 11:09:27,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:09:27,352 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 60 transitions. [2022-11-20 11:09:27,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 11:09:27,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:27,353 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:27,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:09:27,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:27,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:27,354 INFO L85 PathProgramCache]: Analyzing trace with hash -332038773, now seen corresponding path program 1 times [2022-11-20 11:09:27,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:27,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989875350] [2022-11-20 11:09:27,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:27,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:27,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:09:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:09:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:09:27,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:27,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989875350] [2022-11-20 11:09:27,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989875350] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:09:27,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165596649] [2022-11-20 11:09:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:27,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:27,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:27,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:09:27,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:09:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:27,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:09:27,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:28,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:09:28,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:09:28,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165596649] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:28,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:09:28,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 11:09:28,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296594153] [2022-11-20 11:09:28,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:28,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:09:28,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:28,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:09:28,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:09:28,218 INFO L87 Difference]: Start difference. First operand 43 states and 60 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:09:36,420 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 [] [2022-11-20 11:09:38,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:09:40,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:09:43,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:09:44,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:09:46,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:09:50,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:09:52,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:09:54,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:09:57,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:10:00,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:10:00,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:00,351 INFO L93 Difference]: Finished difference Result 124 states and 198 transitions. [2022-11-20 11:10:00,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:10:00,352 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-20 11:10:00,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:00,354 INFO L225 Difference]: With dead ends: 124 [2022-11-20 11:10:00,354 INFO L226 Difference]: Without dead ends: 102 [2022-11-20 11:10:00,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:10:00,356 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 42 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 146 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:00,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 368 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 425 Invalid, 8 Unknown, 0 Unchecked, 31.9s Time] [2022-11-20 11:10:00,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-20 11:10:00,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 63. [2022-11-20 11:10:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 32 states have (on average 1.21875) internal successors, (39), 36 states have internal predecessors, (39), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-20 11:10:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 89 transitions. [2022-11-20 11:10:00,382 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 89 transitions. Word has length 22 [2022-11-20 11:10:00,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:00,382 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 89 transitions. [2022-11-20 11:10:00,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:10:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 89 transitions. [2022-11-20 11:10:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:10:00,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:00,384 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:00,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:00,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:00,590 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:00,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:00,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1041809680, now seen corresponding path program 1 times [2022-11-20 11:10:00,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:00,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183530938] [2022-11-20 11:10:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:00,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:00,602 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:00,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032884654] [2022-11-20 11:10:00,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:00,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:00,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:00,604 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:00,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:10:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:00,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:10:00,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:10:00,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:19,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:19,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183530938] [2022-11-20 11:10:19,242 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:19,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032884654] [2022-11-20 11:10:19,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032884654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:10:19,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:10:19,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-11-20 11:10:19,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802761859] [2022-11-20 11:10:19,243 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:19,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:10:19,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:19,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:10:19,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=81, Unknown=3, NotChecked=0, Total=110 [2022-11-20 11:10:19,244 INFO L87 Difference]: Start difference. First operand 63 states and 89 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:10:25,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:10:27,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:10:29,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:10:31,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:10:33,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:10:35,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:10:38,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:10:40,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:10:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:41,013 INFO L93 Difference]: Finished difference Result 80 states and 109 transitions. [2022-11-20 11:10:41,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:10:41,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-11-20 11:10:41,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:41,016 INFO L225 Difference]: With dead ends: 80 [2022-11-20 11:10:41,016 INFO L226 Difference]: Without dead ends: 57 [2022-11-20 11:10:41,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=39, Invalid=112, Unknown=5, NotChecked=0, Total=156 [2022-11-20 11:10:41,018 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:41,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 121 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 185 Invalid, 6 Unknown, 0 Unchecked, 17.5s Time] [2022-11-20 11:10:41,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-20 11:10:41,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-20 11:10:41,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 31 states have internal predecessors, (34), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-20 11:10:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 82 transitions. [2022-11-20 11:10:41,035 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 82 transitions. Word has length 30 [2022-11-20 11:10:41,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:41,036 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 82 transitions. [2022-11-20 11:10:41,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:10:41,036 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 82 transitions. [2022-11-20 11:10:41,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 11:10:41,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:41,037 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:41,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:41,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:41,243 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:41,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:41,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1015454531, now seen corresponding path program 1 times [2022-11-20 11:10:41,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:41,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390645266] [2022-11-20 11:10:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:41,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:41,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:41,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855940060] [2022-11-20 11:10:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:41,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:41,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:41,254 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:41,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:10:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:41,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:10:41,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:10:41,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:41,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:10:41,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:41,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390645266] [2022-11-20 11:10:41,518 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:41,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855940060] [2022-11-20 11:10:41,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855940060] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:41,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:41,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-20 11:10:41,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090786205] [2022-11-20 11:10:41,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:41,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:10:41,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:41,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:10:41,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:10:41,520 INFO L87 Difference]: Start difference. First operand 57 states and 82 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 11:10:44,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:10:47,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:10:49,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:10:52,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:10:54,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:10:56,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:10:58,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:11:00,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:11:01,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:01,099 INFO L93 Difference]: Finished difference Result 80 states and 112 transitions. [2022-11-20 11:11:01,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:11:01,100 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 29 [2022-11-20 11:11:01,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:01,100 INFO L225 Difference]: With dead ends: 80 [2022-11-20 11:11:01,100 INFO L226 Difference]: Without dead ends: 54 [2022-11-20 11:11:01,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:11:01,103 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 36 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 45 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:01,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 126 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 146 Invalid, 3 Unknown, 0 Unchecked, 19.5s Time] [2022-11-20 11:11:01,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-20 11:11:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2022-11-20 11:11:01,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-20 11:11:01,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2022-11-20 11:11:01,121 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 29 [2022-11-20 11:11:01,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:01,122 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2022-11-20 11:11:01,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 11:11:01,122 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2022-11-20 11:11:01,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 11:11:01,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:01,123 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:01,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:01,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:01,329 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:01,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:01,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1797429611, now seen corresponding path program 1 times [2022-11-20 11:11:01,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:01,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622244417] [2022-11-20 11:11:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:01,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:01,349 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:01,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459209642] [2022-11-20 11:11:01,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:01,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:01,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:01,354 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:01,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:11:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:01,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:11:01,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:11:02,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:10,974 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~q~0#1| Int) (|ULTIMATE.start_main_~r~0#1| Int) (|ULTIMATE.start_main_~n~0#1| Int)) (or (not (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) 4294967296) (mod (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) 4294967296))) (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 4294967280) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 12) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 16 |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1| 4294967284) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|)) 4294967296) 0))) is different from false [2022-11-20 11:11:12,977 WARN L859 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~q~0#1| Int) (|ULTIMATE.start_main_~r~0#1| Int) (|ULTIMATE.start_main_~n~0#1| Int)) (or (not (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) 4294967296) (mod (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) 4294967296))) (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 4294967280) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 12) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 16 |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1| 4294967284) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|)) 4294967296) 0))) is different from true [2022-11-20 11:11:12,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:12,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622244417] [2022-11-20 11:11:12,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:12,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459209642] [2022-11-20 11:11:12,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459209642] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:12,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:11:12,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-11-20 11:11:12,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917063818] [2022-11-20 11:11:12,979 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:12,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:11:12,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:12,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:11:12,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=68, Unknown=2, NotChecked=16, Total=110 [2022-11-20 11:11:12,980 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:11:15,003 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 [] [2022-11-20 11:11:18,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:11:19,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:11:21,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:11:22,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:11:24,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:11:27,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:11:29,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:11:31,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:11:33,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:11:35,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:11:38,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:11:38,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:38,685 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2022-11-20 11:11:38,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:11:38,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-11-20 11:11:38,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:38,686 INFO L225 Difference]: With dead ends: 62 [2022-11-20 11:11:38,686 INFO L226 Difference]: Without dead ends: 60 [2022-11-20 11:11:38,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=37, Invalid=97, Unknown=2, NotChecked=20, Total=156 [2022-11-20 11:11:38,688 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 8 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:38,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 117 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 143 Invalid, 10 Unknown, 0 Unchecked, 25.1s Time] [2022-11-20 11:11:38,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-20 11:11:38,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-20 11:11:38,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 32 states have internal predecessors, (32), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-20 11:11:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2022-11-20 11:11:38,704 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 78 transitions. Word has length 32 [2022-11-20 11:11:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:38,705 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 78 transitions. [2022-11-20 11:11:38,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:11:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 78 transitions. [2022-11-20 11:11:38,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 11:11:38,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:38,707 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:38,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 11:11:38,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:11:38,912 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:38,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:38,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1526883210, now seen corresponding path program 1 times [2022-11-20 11:11:38,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:38,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562898590] [2022-11-20 11:11:38,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:38,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:38,921 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:38,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935078901] [2022-11-20 11:11:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:38,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:38,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:38,923 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:38,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:11:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:39,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 11:11:39,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 11:11:39,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:47,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:47,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562898590] [2022-11-20 11:11:47,049 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:47,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935078901] [2022-11-20 11:11:47,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935078901] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:47,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:11:47,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-11-20 11:11:47,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194528791] [2022-11-20 11:11:47,050 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:47,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:11:47,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:47,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:11:47,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=292, Unknown=1, NotChecked=0, Total=342 [2022-11-20 11:11:47,051 INFO L87 Difference]: Start difference. First operand 60 states and 78 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 11:11:50,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:11:52,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:12:00,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:12:02,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:12:05,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:12:07,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:12:09,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:12:11,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:12:13,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:12:15,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:12:17,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:12:19,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:12:19,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:19,494 INFO L93 Difference]: Finished difference Result 76 states and 92 transitions. [2022-11-20 11:12:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:12:19,495 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 55 [2022-11-20 11:12:19,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:19,496 INFO L225 Difference]: With dead ends: 76 [2022-11-20 11:12:19,496 INFO L226 Difference]: Without dead ends: 57 [2022-11-20 11:12:19,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=77, Invalid=474, Unknown=1, NotChecked=0, Total=552 [2022-11-20 11:12:19,497 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 36 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:19,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 119 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 423 Invalid, 9 Unknown, 0 Unchecked, 32.3s Time] [2022-11-20 11:12:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-20 11:12:19,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2022-11-20 11:12:19,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-20 11:12:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2022-11-20 11:12:19,509 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 55 [2022-11-20 11:12:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:19,510 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2022-11-20 11:12:19,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 11:12:19,510 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2022-11-20 11:12:19,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 11:12:19,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:19,511 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:19,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:19,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:19,717 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:12:19,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:19,718 INFO L85 PathProgramCache]: Analyzing trace with hash 657582233, now seen corresponding path program 2 times [2022-11-20 11:12:19,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:19,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126795181] [2022-11-20 11:12:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:19,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:19,730 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:12:19,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943095092] [2022-11-20 11:12:19,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:12:19,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:19,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:19,732 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:19,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:12:19,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:12:19,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:19,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 11:12:19,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 13 proven. 27 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-20 11:12:20,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:13:16,030 WARN L233 SmtUtils]: Spent 7.25s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:13:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 13 proven. 23 refuted. 1 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 11:13:50,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:50,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126795181] [2022-11-20 11:13:50,990 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:13:50,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943095092] [2022-11-20 11:13:50,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943095092] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:13:50,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:13:50,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2022-11-20 11:13:50,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648675522] [2022-11-20 11:13:50,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:13:50,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:13:50,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:50,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:13:50,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=337, Unknown=11, NotChecked=0, Total=420 [2022-11-20 11:13:50,993 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 18 states have internal predecessors, (39), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-20 11:13:52,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:13:54,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:13:57,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:13:59,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:01,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:12,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:14,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:15,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:16,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:18,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:21,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:23,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:29,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:32,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:34,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:36,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:42,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:47,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:51,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:55,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:14:57,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:02,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:04,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:06,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:08,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:15:11,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:13,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:15,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:17,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:19,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:23,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:25,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:27,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:29,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:31,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:32,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:35,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:37,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:38,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:41,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:43,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:46,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:15:58,716 WARN L233 SmtUtils]: Spent 7.30s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:16:01,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:02,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:04,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:07,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:09,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:10,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:11,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:13,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:15,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:17,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:19,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:21,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:23,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:25,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:27,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:29,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:31,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:33,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:35,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:37,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:38,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:40,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:43,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:45,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:47,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:49,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:51,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:53,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:55,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:57,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:16:58,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:17:00,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:17:04,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:17:06,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:17:08,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:17:11,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:17:13,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:17:15,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:17:17,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:17:19,910 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 [] [2022-11-20 11:17:19,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:19,911 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2022-11-20 11:17:19,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:17:19,912 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 18 states have internal predecessors, (39), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) Word has length 60 [2022-11-20 11:17:19,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:19,913 INFO L225 Difference]: With dead ends: 63 [2022-11-20 11:17:19,913 INFO L226 Difference]: Without dead ends: 61 [2022-11-20 11:17:19,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 84.0s TimeCoverageRelationStatistics Valid=101, Invalid=487, Unknown=12, NotChecked=0, Total=600 [2022-11-20 11:17:19,914 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 38 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 67 mSolverCounterUnsat, 62 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 185.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 62 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 185.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:19,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 130 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 430 Invalid, 62 Unknown, 0 Unchecked, 185.2s Time] [2022-11-20 11:17:19,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-20 11:17:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-11-20 11:17:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-20 11:17:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2022-11-20 11:17:19,930 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 60 [2022-11-20 11:17:19,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:19,931 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2022-11-20 11:17:19,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 18 states have internal predecessors, (39), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-20 11:17:19,932 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2022-11-20 11:17:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 11:17:19,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:19,933 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:17:19,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:17:20,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:20,138 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:20,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:20,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1365029718, now seen corresponding path program 3 times [2022-11-20 11:17:20,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:20,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627009559] [2022-11-20 11:17:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:20,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:20,147 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:17:20,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706825162] [2022-11-20 11:17:20,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:17:20,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:20,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:17:20,149 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:17:20,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:17:20,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:17:20,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:17:20,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:17:20,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-20 11:17:20,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:17:29,837 WARN L859 $PredicateComparison]: unable to prove that (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 16 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| 15 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) is different from true [2022-11-20 11:18:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-20 11:18:20,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:20,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627009559] [2022-11-20 11:18:20,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:18:20,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706825162] [2022-11-20 11:18:20,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706825162] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:18:20,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:18:20,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 11:18:20,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534553695] [2022-11-20 11:18:20,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:18:20,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:18:20,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:20,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:18:20,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=158, Unknown=6, NotChecked=26, Total=240 [2022-11-20 11:18:20,187 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-20 11:18:22,191 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 [] [2022-11-20 11:18:24,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:18:26,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:18:34,400 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:18:36,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:18:38,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:18:40,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:18:42,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:18:44,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:18:51,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:18:53,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:18:56,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:18:58,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:00,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:02,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:04,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:06,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:09,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:11,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:15,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:18,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:20,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:22,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:24,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:27,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:29,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:30,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:33,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:35,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:37,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:40,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:42,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:19:42,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:42,809 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-11-20 11:19:42,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:19:42,810 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 65 [2022-11-20 11:19:42,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:42,811 INFO L225 Difference]: With dead ends: 59 [2022-11-20 11:19:42,811 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:19:42,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 41.4s TimeCoverageRelationStatistics Valid=64, Invalid=204, Unknown=8, NotChecked=30, Total=306 [2022-11-20 11:19:42,812 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 18 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 44 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 69.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:42,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 112 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 193 Invalid, 27 Unknown, 52 Unchecked, 69.9s Time] [2022-11-20 11:19:42,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:19:42,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:19:42,813 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) [2022-11-20 11:19:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:19:42,813 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2022-11-20 11:19:42,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:42,813 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:19:42,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-20 11:19:42,814 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:19:42,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:19:42,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:19:42,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:19:43,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 11:19:43,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:19:47,910 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2022-11-20 11:19:47,910 INFO L902 garLoopResultBuilder]: At program point L60(lines 19 61) the Hoare annotation is: true [2022-11-20 11:19:47,910 INFO L902 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2022-11-20 11:19:47,910 INFO L895 garLoopResultBuilder]: At program point L23-1(line 23) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 2) [2022-11-20 11:19:47,911 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2022-11-20 11:19:47,911 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 19 61) the Hoare annotation is: (let ((.cse3 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse1 (<= .cse3 2)) (.cse5 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and .cse0 .cse1 .cse2 (<= 1 .cse3) (= |ULTIMATE.start_main_~q~0#1| 4) .cse4) (and .cse0 (<= (+ (* (div |ULTIMATE.start_main_~q~0#1| 4294967296) 4294967296) |ULTIMATE.start_main_~r~0#1| (* (div (+ |ULTIMATE.start_main_~q~0#1| (* 2 |ULTIMATE.start_main_~p~0#1|)) 4294967296) 4294967296) 1) (+ |ULTIMATE.start_main_~q~0#1| (* (div |ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296))) .cse2 .cse5 .cse4) (let ((.cse6 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (<= 1 (mod .cse6 4294967296)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) .cse1 (= |ULTIMATE.start_main_~n~0#1| .cse6) .cse5 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))))) [2022-11-20 11:19:47,911 INFO L899 garLoopResultBuilder]: For program point L44(lines 38 56) no Hoare annotation was computed. [2022-11-20 11:19:47,911 INFO L895 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= .cse5 2)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 (<= 1 .cse5) (= |ULTIMATE.start_main_~q~0#1| 4) .cse3) (let ((.cse6 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (<= 1 (mod .cse6 4294967296)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) .cse4 (= |ULTIMATE.start_main_~n~0#1| .cse6) .cse2 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))))) [2022-11-20 11:19:47,911 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 11:19:47,911 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 11:19:47,911 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 11:19:47,912 INFO L895 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and (= |ULTIMATE.start_main_~p~0#1| 0) .cse0 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (and (<= 1 (mod (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 4294967296)) (= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (<= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 2) .cse0 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))) [2022-11-20 11:19:47,912 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2022-11-20 11:19:47,912 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= .cse5 2)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 (<= 1 .cse5) (= |ULTIMATE.start_main_~q~0#1| 4) .cse3) (let ((.cse6 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (<= 1 (mod .cse6 4294967296)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) .cse4 (= |ULTIMATE.start_main_~n~0#1| .cse6) .cse2 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))))) [2022-11-20 11:19:47,912 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 11:19:47,912 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and (= |ULTIMATE.start_main_~p~0#1| 0) .cse0 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (and (<= 1 (mod (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 4294967296)) (= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (<= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 2) .cse0 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))) [2022-11-20 11:19:47,912 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= .cse5 2)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 (<= 1 .cse5) (= |ULTIMATE.start_main_~q~0#1| 4) .cse3) (and (<= 1 (mod (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 4294967296)) (= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) .cse4 .cse2 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|))))) [2022-11-20 11:19:47,912 INFO L895 garLoopResultBuilder]: At program point L38-1(lines 38 56) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) .cse0 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (and (<= 1 (mod (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 4294967296)) (= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (<= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 2) .cse0 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))) [2022-11-20 11:19:47,912 INFO L895 garLoopResultBuilder]: At program point L30-2(lines 30 35) the Hoare annotation is: (let ((.cse3 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (<= .cse3 2)) (.cse2 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|))) (or (and .cse0 .cse1 .cse2 (<= 1 .cse3) (= |ULTIMATE.start_main_~q~0#1| 4) .cse4) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~q~0#1| 1) .cse4)))) [2022-11-20 11:19:47,912 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2022-11-20 11:19:47,913 INFO L895 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= .cse5 2)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 (<= 1 .cse5) (= |ULTIMATE.start_main_~q~0#1| 4) .cse3) (and (<= 1 (mod (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 4294967296)) (= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) .cse4 .cse2 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|))))) [2022-11-20 11:19:47,913 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse3 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse1 (<= .cse3 2)) (.cse5 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and .cse0 .cse1 .cse2 (<= 1 .cse3) (= |ULTIMATE.start_main_~q~0#1| 4) .cse4) (and .cse0 (<= (+ (* (div |ULTIMATE.start_main_~q~0#1| 4294967296) 4294967296) |ULTIMATE.start_main_~r~0#1| (* (div (+ |ULTIMATE.start_main_~q~0#1| (* 2 |ULTIMATE.start_main_~p~0#1|)) 4294967296) 4294967296) 1) (+ |ULTIMATE.start_main_~q~0#1| (* (div |ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296))) .cse2 .cse5 .cse4) (let ((.cse6 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (<= 1 (mod .cse6 4294967296)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) .cse1 (= |ULTIMATE.start_main_~n~0#1| .cse6) .cse5 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))))) [2022-11-20 11:19:47,913 INFO L895 garLoopResultBuilder]: At program point L39-1(line 39) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= .cse5 2)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 (<= 1 .cse5) (= |ULTIMATE.start_main_~q~0#1| 4) .cse3) (let ((.cse6 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (<= 1 (mod .cse6 4294967296)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) .cse4 (= |ULTIMATE.start_main_~n~0#1| .cse6) .cse2 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))))) [2022-11-20 11:19:47,913 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2022-11-20 11:19:47,913 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2022-11-20 11:19:47,913 INFO L899 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2022-11-20 11:19:47,913 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2022-11-20 11:19:47,913 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2022-11-20 11:19:47,913 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2022-11-20 11:19:47,914 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2022-11-20 11:19:47,914 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2022-11-20 11:19:47,914 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2022-11-20 11:19:47,914 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-11-20 11:19:47,917 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:47,919 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:19:47,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:19:47 BoogieIcfgContainer [2022-11-20 11:19:47,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:19:47,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:19:47,936 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:19:47,936 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:19:47,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:09:14" (3/4) ... [2022-11-20 11:19:47,940 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:19:47,947 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-20 11:19:47,947 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-20 11:19:47,951 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-20 11:19:47,952 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 11:19:47,952 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:19:47,952 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:19:47,989 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:19:47,989 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:19:47,990 INFO L158 Benchmark]: Toolchain (without parser) took 634531.10ms. Allocated memory was 142.6MB in the beginning and 182.5MB in the end (delta: 39.8MB). Free memory was 110.7MB in the beginning and 90.3MB in the end (delta: 20.3MB). Peak memory consumption was 61.7MB. Max. memory is 16.1GB. [2022-11-20 11:19:47,990 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 62.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:19:47,990 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.65ms. Allocated memory is still 142.6MB. Free memory was 110.1MB in the beginning and 99.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:19:47,991 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.47ms. Allocated memory is still 142.6MB. Free memory was 99.1MB in the beginning and 97.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:19:47,991 INFO L158 Benchmark]: Boogie Preprocessor took 31.14ms. Allocated memory is still 142.6MB. Free memory was 97.1MB in the beginning and 96.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:19:47,991 INFO L158 Benchmark]: RCFGBuilder took 450.55ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 81.8MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 11:19:47,991 INFO L158 Benchmark]: TraceAbstraction took 633620.75ms. Allocated memory was 142.6MB in the beginning and 182.5MB in the end (delta: 39.8MB). Free memory was 80.8MB in the beginning and 93.5MB in the end (delta: -12.7MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. [2022-11-20 11:19:47,992 INFO L158 Benchmark]: Witness Printer took 53.14ms. Allocated memory is still 182.5MB. Free memory was 93.5MB in the beginning and 90.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:19:47,993 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 62.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.65ms. Allocated memory is still 142.6MB. Free memory was 110.1MB in the beginning and 99.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.47ms. Allocated memory is still 142.6MB. Free memory was 99.1MB in the beginning and 97.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.14ms. Allocated memory is still 142.6MB. Free memory was 97.1MB in the beginning and 96.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 450.55ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 81.8MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 633620.75ms. Allocated memory was 142.6MB in the beginning and 182.5MB in the end (delta: 39.8MB). Free memory was 80.8MB in the beginning and 93.5MB in the end (delta: -12.7MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. * Witness Printer took 53.14ms. Allocated memory is still 182.5MB. Free memory was 93.5MB in the beginning and 90.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 633.5s, OverallIterations: 9, TraceHistogramMax: 9, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 434.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 129 mSolverCounterUnknown, 245 SdHoareTripleChecker+Valid, 392.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 195 mSDsluCounter, 1294 SdHoareTripleChecker+Invalid, 392.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 52 IncrementalHoareTripleChecker+Unchecked, 948 mSDsCounter, 371 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2030 IncrementalHoareTripleChecker+Invalid, 2582 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 371 mSolverCounterUnsat, 346 mSDtfsCounter, 2030 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 546 GetRequests, 428 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 159.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=3, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 48 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 87 PreInvPairs, 120 NumberOfFragments, 666 HoareAnnotationTreeSize, 87 FomulaSimplifications, 89 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 16 FomulaSimplificationsInter, 1474 FormulaSimplificationTreeSizeReductionInter, 4.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 190.6s InterpolantComputationTime, 373 NumberOfCodeBlocks, 343 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 516 ConstructedInterpolants, 0 QuantifiedInterpolants, 4734 SizeOfPredicates, 18 NumberOfNonLiveVariables, 758 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 554/646 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: 30]: Loop Invariant Derived loop invariant: (((((p == 0 && n % 4294967296 <= 2) && h == 0) && 1 <= n % 4294967296) && q == 4) && n == r) || ((((p == 0 && n % 4294967296 <= 2) && h == 0) && q == 1) && n == r) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((((((p == 0 && n % 4294967296 <= 2) && h == 0) && 1 <= n % 4294967296) && q == 4) && n == r) || ((((p == 0 && q / 4294967296 * 4294967296 + r + (q + 2 * p) / 4294967296 * 4294967296 + 1 <= q + r / 4294967296 * 4294967296) && h == 0) && q == 1) && n == r)) || (((((1 <= (q + r) % 4294967296 && p == q) && n % 4294967296 <= 2) && n == q + r) && q == 1) && h == q) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 11:19:48,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f89303-3c00-4127-a297-2c1b59636e52/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE