./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:34:19,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:34:19,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:34:19,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:34:19,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:34:19,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:34:19,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:34:19,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:34:19,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:34:19,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:34:19,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:34:19,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:34:19,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:34:19,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:34:19,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:34:19,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:34:19,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:34:19,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:34:19,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:34:19,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:34:19,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:34:19,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:34:19,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:34:19,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:34:19,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:34:19,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:34:19,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:34:19,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:34:19,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:34:19,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:34:19,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:34:19,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:34:19,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:34:19,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:34:19,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:34:19,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:34:19,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:34:19,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:34:19,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:34:19,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:34:19,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:34:19,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:34:19,675 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:34:19,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:34:19,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:34:19,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:34:19,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:34:19,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:34:19,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:34:19,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:34:19,679 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:34:19,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:34:19,680 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:34:19,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:34:19,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:34:19,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:34:19,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:34:19,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:34:19,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:34:19,682 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:34:19,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:34:19,683 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:34:19,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:34:19,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:34:19,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:34:19,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:34:19,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:34:19,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:34:19,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:34:19,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:34:19,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:34:19,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:34:19,686 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:34:19,686 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:34:19,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:34:19,686 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_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 [2022-11-18 18:34:20,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:34:20,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:34:20,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:34:20,121 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:34:20,122 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:34:20,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2022-11-18 18:34:20,199 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/data/b0981edd2/480c062c61e740289b359ae971ac70ce/FLAG292664da0 [2022-11-18 18:34:20,752 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:34:20,754 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2022-11-18 18:34:20,761 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/data/b0981edd2/480c062c61e740289b359ae971ac70ce/FLAG292664da0 [2022-11-18 18:34:21,117 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/data/b0981edd2/480c062c61e740289b359ae971ac70ce [2022-11-18 18:34:21,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:34:21,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:34:21,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:34:21,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:34:21,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:34:21,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db91f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21, skipping insertion in model container [2022-11-18 18:34:21,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:34:21,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:34:21,429 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2022-11-18 18:34:21,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:34:21,480 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:34:21,502 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2022-11-18 18:34:21,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:34:21,546 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:34:21,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21 WrapperNode [2022-11-18 18:34:21,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:34:21,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:34:21,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:34:21,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:34:21,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,594 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2022-11-18 18:34:21,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:34:21,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:34:21,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:34:21,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:34:21,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,629 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:34:21,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:34:21,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:34:21,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:34:21,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:34:21,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:21,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:34:21,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:34:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:34:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 18:34:21,722 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 18:34:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:34:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:34:21,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:34:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 18:34:21,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 18:34:21,792 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:34:21,794 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:34:21,951 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:34:21,958 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:34:21,959 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 18:34:21,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:34:21 BoogieIcfgContainer [2022-11-18 18:34:21,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:34:21,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:34:21,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:34:21,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:34:21,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:34:21" (1/3) ... [2022-11-18 18:34:21,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43523d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:34:21, skipping insertion in model container [2022-11-18 18:34:21,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (2/3) ... [2022-11-18 18:34:21,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43523d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:34:21, skipping insertion in model container [2022-11-18 18:34:21,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:34:21" (3/3) ... [2022-11-18 18:34:21,971 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound2.c [2022-11-18 18:34:21,993 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:34:21,994 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:34:22,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:34:22,054 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;@4805347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:34:22,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:34:22,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-18 18:34:22,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:34:22,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:22,069 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:22,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:22,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:22,077 INFO L85 PathProgramCache]: Analyzing trace with hash -487550744, now seen corresponding path program 1 times [2022-11-18 18:34:22,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:22,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105651154] [2022-11-18 18:34:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:22,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:22,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:34:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:22,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:34:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:22,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:34:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:34:22,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:22,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105651154] [2022-11-18 18:34:22,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105651154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:22,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:22,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:34:22,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156869049] [2022-11-18 18:34:22,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:22,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:34:22,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:22,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:34:22,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:34:22,431 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:34:22,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:34:22,477 INFO L93 Difference]: Finished difference Result 63 states and 104 transitions. [2022-11-18 18:34:22,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:34:22,481 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-11-18 18:34:22,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:34:22,491 INFO L225 Difference]: With dead ends: 63 [2022-11-18 18:34:22,491 INFO L226 Difference]: Without dead ends: 29 [2022-11-18 18:34:22,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:34:22,501 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:34:22,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:34:22,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-18 18:34:22,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-18 18:34:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 18:34:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2022-11-18 18:34:22,553 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2022-11-18 18:34:22,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:34:22,553 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2022-11-18 18:34:22,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:34:22,554 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2022-11-18 18:34:22,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:34:22,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:22,556 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:22,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:34:22,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:22,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:22,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1636258074, now seen corresponding path program 1 times [2022-11-18 18:34:22,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:22,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097817290] [2022-11-18 18:34:22,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:22,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:22,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:34:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:22,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:34:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:22,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:34:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:34:22,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:22,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097817290] [2022-11-18 18:34:22,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097817290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:22,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:22,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:34:22,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829452680] [2022-11-18 18:34:22,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:22,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:34:22,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:22,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:34:22,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:34:22,848 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:34:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:34:22,994 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-11-18 18:34:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:34:22,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-11-18 18:34:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:34:22,996 INFO L225 Difference]: With dead ends: 42 [2022-11-18 18:34:22,996 INFO L226 Difference]: Without dead ends: 40 [2022-11-18 18:34:22,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:34:22,998 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:34:22,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 128 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:34:23,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-18 18:34:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-11-18 18:34:23,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 18:34:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-11-18 18:34:23,011 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 24 [2022-11-18 18:34:23,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:34:23,011 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-11-18 18:34:23,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:34:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-11-18 18:34:23,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 18:34:23,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:23,013 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:23,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:34:23,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:23,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:23,015 INFO L85 PathProgramCache]: Analyzing trace with hash 906849917, now seen corresponding path program 1 times [2022-11-18 18:34:23,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:23,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901480313] [2022-11-18 18:34:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:23,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:23,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:34:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:23,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:34:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:23,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:34:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:23,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 18:34:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:34:23,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:23,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901480313] [2022-11-18 18:34:23,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901480313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:23,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:23,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:34:23,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090804182] [2022-11-18 18:34:23,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:23,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:34:23,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:23,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:34:23,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:34:23,328 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:34:23,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:34:23,446 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2022-11-18 18:34:23,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:34:23,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-11-18 18:34:23,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:34:23,448 INFO L225 Difference]: With dead ends: 46 [2022-11-18 18:34:23,449 INFO L226 Difference]: Without dead ends: 44 [2022-11-18 18:34:23,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:34:23,451 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:34:23,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 123 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:34:23,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-18 18:34:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-11-18 18:34:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 18:34:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-11-18 18:34:23,471 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2022-11-18 18:34:23,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:34:23,471 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-11-18 18:34:23,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:34:23,472 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-11-18 18:34:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 18:34:23,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:23,473 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:23,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:34:23,474 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:23,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:23,474 INFO L85 PathProgramCache]: Analyzing trace with hash 710995206, now seen corresponding path program 1 times [2022-11-18 18:34:23,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:23,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578875420] [2022-11-18 18:34:23,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:23,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:23,520 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:34:23,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1390334896] [2022-11-18 18:34:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:23,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:23,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:23,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:23,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:34:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:23,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 18:34:23,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 18:34:24,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:34:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:34:24,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:24,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578875420] [2022-11-18 18:34:24,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:34:24,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390334896] [2022-11-18 18:34:24,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390334896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:34:24,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:34:24,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 16 [2022-11-18 18:34:24,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014436018] [2022-11-18 18:34:24,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:34:24,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:34:24,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:24,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:34:24,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:34:24,396 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 16 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-18 18:34:24,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:34:24,954 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2022-11-18 18:34:24,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:34:24,956 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 34 [2022-11-18 18:34:24,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:34:24,959 INFO L225 Difference]: With dead ends: 72 [2022-11-18 18:34:24,959 INFO L226 Difference]: Without dead ends: 57 [2022-11-18 18:34:24,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:34:24,962 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 50 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:34:24,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 128 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:34:24,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-18 18:34:24,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2022-11-18 18:34:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-18 18:34:24,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-11-18 18:34:24,994 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 34 [2022-11-18 18:34:24,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:34:24,995 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-11-18 18:34:24,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-18 18:34:24,996 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2022-11-18 18:34:24,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 18:34:25,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:25,001 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:25,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 18:34:25,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:25,212 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:25,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:25,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1829555286, now seen corresponding path program 1 times [2022-11-18 18:34:25,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:25,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612475913] [2022-11-18 18:34:25,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:25,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:25,228 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:34:25,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592290270] [2022-11-18 18:34:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:25,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:25,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:25,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:25,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:34:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:25,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:34:25,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:34:25,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:34:25,960 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:34:25,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:25,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612475913] [2022-11-18 18:34:25,963 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:34:25,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592290270] [2022-11-18 18:34:25,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592290270] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:34:25,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:34:25,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2022-11-18 18:34:25,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975577301] [2022-11-18 18:34:25,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:34:25,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:34:25,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:25,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:34:25,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:34:25,973 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-18 18:34:26,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:34:26,395 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2022-11-18 18:34:26,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:34:26,396 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 41 [2022-11-18 18:34:26,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:34:26,397 INFO L225 Difference]: With dead ends: 69 [2022-11-18 18:34:26,397 INFO L226 Difference]: Without dead ends: 62 [2022-11-18 18:34:26,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-11-18 18:34:26,399 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 55 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:34:26,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 112 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:34:26,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-18 18:34:26,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-18 18:34:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.105263157894737) internal successors, (42), 41 states have internal predecessors, (42), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-18 18:34:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2022-11-18 18:34:26,419 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 41 [2022-11-18 18:34:26,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:34:26,420 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-11-18 18:34:26,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-18 18:34:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2022-11-18 18:34:26,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 18:34:26,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:26,422 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 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] [2022-11-18 18:34:26,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:26,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:26,629 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:26,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash -677073599, now seen corresponding path program 1 times [2022-11-18 18:34:26,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:26,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435759898] [2022-11-18 18:34:26,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:26,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:26,644 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:34:26,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550263685] [2022-11-18 18:34:26,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:26,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:26,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:26,646 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:26,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:34:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:26,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:34:26,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-18 18:34:26,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:34:26,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:26,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435759898] [2022-11-18 18:34:26,784 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:34:26,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550263685] [2022-11-18 18:34:26,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550263685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:26,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:26,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:34:26,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45706651] [2022-11-18 18:34:26,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:26,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:34:26,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:26,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:34:26,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:34:26,787 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 18:34:26,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:34:26,849 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2022-11-18 18:34:26,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:34:26,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 69 [2022-11-18 18:34:26,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:34:26,852 INFO L225 Difference]: With dead ends: 70 [2022-11-18 18:34:26,852 INFO L226 Difference]: Without dead ends: 63 [2022-11-18 18:34:26,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:34:26,854 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:34:26,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:34:26,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-18 18:34:26,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-18 18:34:26,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 41 states have internal predecessors, (43), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-18 18:34:26,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2022-11-18 18:34:26,873 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 69 [2022-11-18 18:34:26,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:34:26,873 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2022-11-18 18:34:26,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 18:34:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2022-11-18 18:34:26,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-18 18:34:26,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:34:26,876 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:26,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 18:34:27,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 18:34:27,082 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:34:27,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:27,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1754894755, now seen corresponding path program 1 times [2022-11-18 18:34:27,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:27,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618422179] [2022-11-18 18:34:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:27,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:27,097 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:34:27,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544742678] [2022-11-18 18:34:27,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:27,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:27,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:27,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:27,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:34:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:27,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-18 18:34:27,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 42 proven. 8 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-18 18:34:28,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:29,123 WARN L233 SmtUtils]: Spent 42.89s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:36:49,123 WARN L233 SmtUtils]: Spent 32.67s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:37:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 36 proven. 8 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-18 18:37:57,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:57,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618422179] [2022-11-18 18:37:57,606 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:37:57,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544742678] [2022-11-18 18:37:57,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544742678] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:37:57,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:37:57,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 23 [2022-11-18 18:37:57,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118385606] [2022-11-18 18:37:57,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:37:57,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:37:57,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:57,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:37:57,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:37:57,608 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) [2022-11-18 18:37:59,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 18:38:01,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 18:38:04,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 18:38:06,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 18:38:13,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 18:38:14,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 18:38:48,121 WARN L233 SmtUtils]: Spent 30.48s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:38:49,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 18:39:01,583 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 57 DAG size of output: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:39:03,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:03,646 INFO L93 Difference]: Finished difference Result 123 states and 153 transitions. [2022-11-18 18:39:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:39:03,648 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) Word has length 71 [2022-11-18 18:39:03,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:03,649 INFO L225 Difference]: With dead ends: 123 [2022-11-18 18:39:03,655 INFO L226 Difference]: Without dead ends: 105 [2022-11-18 18:39:03,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 123.1s TimeCoverageRelationStatistics Valid=228, Invalid=1032, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 18:39:03,659 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 92 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 122 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:03,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 156 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 675 Invalid, 5 Unknown, 0 Unchecked, 19.8s Time] [2022-11-18 18:39:03,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-18 18:39:03,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2022-11-18 18:39:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 60 states have internal predecessors, (62), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 19 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 18:39:03,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 107 transitions. [2022-11-18 18:39:03,717 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 107 transitions. Word has length 71 [2022-11-18 18:39:03,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:03,718 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 107 transitions. [2022-11-18 18:39:03,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) [2022-11-18 18:39:03,719 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 107 transitions. [2022-11-18 18:39:03,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-18 18:39:03,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:03,727 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:03,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:03,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 18:39:03,928 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:03,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:03,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1620227847, now seen corresponding path program 1 times [2022-11-18 18:39:03,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:03,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440740499] [2022-11-18 18:39:03,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:03,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:03,946 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:03,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955283859] [2022-11-18 18:39:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:03,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:03,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:03,956 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:03,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:39:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:04,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 18:39:04,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-18 18:39:04,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:06,291 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-18 18:39:06,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:06,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440740499] [2022-11-18 18:39:06,292 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:39:06,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955283859] [2022-11-18 18:39:06,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955283859] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:39:06,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:39:06,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2022-11-18 18:39:06,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583252056] [2022-11-18 18:39:06,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:39:06,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 18:39:06,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:06,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 18:39:06,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:39:06,294 INFO L87 Difference]: Start difference. First operand 91 states and 107 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-18 18:39:09,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:09,291 INFO L93 Difference]: Finished difference Result 127 states and 148 transitions. [2022-11-18 18:39:09,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:39:09,291 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) Word has length 82 [2022-11-18 18:39:09,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:09,293 INFO L225 Difference]: With dead ends: 127 [2022-11-18 18:39:09,293 INFO L226 Difference]: Without dead ends: 97 [2022-11-18 18:39:09,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2022-11-18 18:39:09,295 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 41 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:09,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 222 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 18:39:09,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-18 18:39:09,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 76. [2022-11-18 18:39:09,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 50 states have internal predecessors, (52), 17 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 18:39:09,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2022-11-18 18:39:09,334 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 82 [2022-11-18 18:39:09,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:09,337 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2022-11-18 18:39:09,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-18 18:39:09,337 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2022-11-18 18:39:09,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-18 18:39:09,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:09,341 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:09,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:09,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:09,548 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:09,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:09,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1888027627, now seen corresponding path program 2 times [2022-11-18 18:39:09,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:09,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438427606] [2022-11-18 18:39:09,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:09,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:09,566 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:09,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130865163] [2022-11-18 18:39:09,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:39:09,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:09,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:09,568 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:09,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:39:09,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:39:09,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:39:09,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:39:09,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-18 18:39:09,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-18 18:39:09,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:09,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438427606] [2022-11-18 18:39:09,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:39:09,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130865163] [2022-11-18 18:39:09,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130865163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:39:09,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:39:09,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2022-11-18 18:39:09,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474992558] [2022-11-18 18:39:09,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:39:09,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:39:09,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:09,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:39:09,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:39:09,848 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-18 18:39:09,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:09,926 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2022-11-18 18:39:09,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:39:09,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 84 [2022-11-18 18:39:09,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:09,928 INFO L225 Difference]: With dead ends: 108 [2022-11-18 18:39:09,929 INFO L226 Difference]: Without dead ends: 81 [2022-11-18 18:39:09,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:39:09,930 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:09,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:09,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-18 18:39:09,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-18 18:39:09,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 50 states have (on average 1.08) internal successors, (54), 52 states have internal predecessors, (54), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-18 18:39:09,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2022-11-18 18:39:09,960 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 84 [2022-11-18 18:39:09,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:09,960 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2022-11-18 18:39:09,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-18 18:39:09,961 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2022-11-18 18:39:09,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-18 18:39:09,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:09,962 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:09,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:10,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 18:39:10,168 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:10,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:10,169 INFO L85 PathProgramCache]: Analyzing trace with hash -2103086134, now seen corresponding path program 3 times [2022-11-18 18:39:10,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:10,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162274965] [2022-11-18 18:39:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:10,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:10,179 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:10,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249846300] [2022-11-18 18:39:10,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:39:10,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:10,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:10,182 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:10,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:39:10,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 18:39:10,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:39:10,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:39:10,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 33 proven. 23 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-18 18:39:11,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 33 proven. 23 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-18 18:39:13,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:13,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162274965] [2022-11-18 18:39:13,056 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:39:13,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249846300] [2022-11-18 18:39:13,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249846300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:39:13,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:39:13,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2022-11-18 18:39:13,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454799769] [2022-11-18 18:39:13,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:39:13,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:39:13,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:13,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:39:13,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:39:13,058 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) [2022-11-18 18:39:14,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:14,869 INFO L93 Difference]: Finished difference Result 142 states and 166 transitions. [2022-11-18 18:39:14,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:39:14,870 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) Word has length 101 [2022-11-18 18:39:14,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:14,871 INFO L225 Difference]: With dead ends: 142 [2022-11-18 18:39:14,872 INFO L226 Difference]: Without dead ends: 90 [2022-11-18 18:39:14,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 181 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2022-11-18 18:39:14,873 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 85 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:14,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 231 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 18:39:14,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-18 18:39:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2022-11-18 18:39:14,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 53 states have internal predecessors, (54), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-18 18:39:14,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2022-11-18 18:39:14,909 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 101 [2022-11-18 18:39:14,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:14,910 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2022-11-18 18:39:14,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) [2022-11-18 18:39:14,910 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2022-11-18 18:39:14,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-18 18:39:14,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:14,911 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:14,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:15,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:15,117 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:15,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:15,118 INFO L85 PathProgramCache]: Analyzing trace with hash 845989083, now seen corresponding path program 1 times [2022-11-18 18:39:15,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:15,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362163113] [2022-11-18 18:39:15,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:15,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:15,133 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:15,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027478670] [2022-11-18 18:39:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:15,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:15,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:15,143 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:15,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:39:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:15,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-18 18:39:15,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:16,474 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 27 proven. 72 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-11-18 18:39:16,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:31,648 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification that was a NOOP. DAG size: 123 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:40:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 27 proven. 66 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-11-18 18:40:06,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:06,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362163113] [2022-11-18 18:40:06,093 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:06,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027478670] [2022-11-18 18:40:06,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027478670] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:40:06,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:40:06,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 29 [2022-11-18 18:40:06,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670955167] [2022-11-18 18:40:06,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:06,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 18:40:06,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:06,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 18:40:06,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-11-18 18:40:06,096 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 26 states have internal predecessors, (51), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 14 states have call predecessors, (34), 16 states have call successors, (34) [2022-11-18 18:40:09,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:09,101 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2022-11-18 18:40:09,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:40:09,102 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 26 states have internal predecessors, (51), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 14 states have call predecessors, (34), 16 states have call successors, (34) Word has length 106 [2022-11-18 18:40:09,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:09,103 INFO L225 Difference]: With dead ends: 105 [2022-11-18 18:40:09,103 INFO L226 Difference]: Without dead ends: 85 [2022-11-18 18:40:09,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=254, Invalid=1228, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 18:40:09,105 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 75 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:09,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 214 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 18:40:09,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-18 18:40:09,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-18 18:40:09,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 54 states have (on average 1.0) internal successors, (54), 54 states have internal predecessors, (54), 19 states have call successors, (19), 12 states have call predecessors, (19), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-18 18:40:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2022-11-18 18:40:09,131 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 106 [2022-11-18 18:40:09,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:09,132 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2022-11-18 18:40:09,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 26 states have internal predecessors, (51), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 14 states have call predecessors, (34), 16 states have call successors, (34) [2022-11-18 18:40:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2022-11-18 18:40:09,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 18:40:09,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:09,134 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:09,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:09,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:09,340 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:09,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:09,340 INFO L85 PathProgramCache]: Analyzing trace with hash -419411602, now seen corresponding path program 1 times [2022-11-18 18:40:09,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:09,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340753396] [2022-11-18 18:40:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:09,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:09,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:09,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242905872] [2022-11-18 18:40:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:09,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:09,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:09,352 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:09,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:40:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:09,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-18 18:40:09,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 29 proven. 77 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2022-11-18 18:40:10,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 29 proven. 71 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2022-11-18 18:40:35,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:35,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340753396] [2022-11-18 18:40:35,350 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:35,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242905872] [2022-11-18 18:40:35,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242905872] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:40:35,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:40:35,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 29 [2022-11-18 18:40:35,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513799261] [2022-11-18 18:40:35,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:35,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 18:40:35,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:35,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 18:40:35,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2022-11-18 18:40:35,353 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 29 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 17 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 14 states have call predecessors, (36), 15 states have call successors, (36) [2022-11-18 18:40:44,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:44,640 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2022-11-18 18:40:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:40:44,641 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 17 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 14 states have call predecessors, (36), 15 states have call successors, (36) Word has length 112 [2022-11-18 18:40:44,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:44,642 INFO L225 Difference]: With dead ends: 85 [2022-11-18 18:40:44,643 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 18:40:44,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:40:44,644 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 69 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:44,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 206 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-18 18:40:44,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 18:40:44,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 18:40:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:44,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 18:40:44,646 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2022-11-18 18:40:44,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:44,646 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 18:40:44,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 17 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 14 states have call predecessors, (36), 15 states have call successors, (36) [2022-11-18 18:40:44,647 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 18:40:44,647 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 18:40:44,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 18:40:44,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-18 18:40:44,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:44,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-18 18:40:56,740 INFO L895 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) (<= 1 .cse0) (<= .cse0 2))) [2022-11-18 18:40:56,741 INFO L899 garLoopResultBuilder]: For program point L48(lines 46 58) no Hoare annotation was computed. [2022-11-18 18:40:56,741 INFO L895 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (<= .cse1 2)) (.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse1))) (or (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (= (+ .cse0 .cse1) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse2) (* |ULTIMATE.start_main_~q~0#1| .cse2) |ULTIMATE.start_main_~r~0#1|)) (<= 1 .cse2) .cse3 (<= 2 |ULTIMATE.start_main_~p~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse2) |ULTIMATE.start_main_~d~0#1|) .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) (<= 1 (mod |ULTIMATE.start_main_~d~0#1| 4294967296)) .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (<= .cse2 2) .cse4)))) [2022-11-18 18:40:56,741 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-18 18:40:56,741 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-18 18:40:56,741 INFO L899 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2022-11-18 18:40:56,741 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-18 18:40:56,741 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2) [2022-11-18 18:40:56,741 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2) (<= (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 2)) [2022-11-18 18:40:56,742 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (<= .cse1 2)) (.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse1))) (or (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (= (+ .cse0 .cse1) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse2) (* |ULTIMATE.start_main_~q~0#1| .cse2) |ULTIMATE.start_main_~r~0#1|)) (<= 1 .cse2) .cse3 (<= 2 |ULTIMATE.start_main_~p~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse2) |ULTIMATE.start_main_~d~0#1|) .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) (<= 1 (mod |ULTIMATE.start_main_~d~0#1| 4294967296)) .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (<= .cse2 2) .cse4)))) [2022-11-18 18:40:56,742 INFO L895 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (<= .cse1 2)) (.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse1))) (or (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (= (+ .cse0 .cse1) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse2) (* |ULTIMATE.start_main_~q~0#1| .cse2) |ULTIMATE.start_main_~r~0#1|)) (<= 1 .cse2) .cse3 (<= 2 |ULTIMATE.start_main_~p~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse2) |ULTIMATE.start_main_~d~0#1|) .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) (<= 1 (mod |ULTIMATE.start_main_~d~0#1| 4294967296)) .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (<= .cse2 2) .cse4)))) [2022-11-18 18:40:56,742 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-18 18:40:56,742 INFO L902 garLoopResultBuilder]: At program point L62(lines 22 63) the Hoare annotation is: true [2022-11-18 18:40:56,742 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-11-18 18:40:56,742 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 57) no Hoare annotation was computed. [2022-11-18 18:40:56,742 INFO L895 garLoopResultBuilder]: At program point L54-2(lines 22 63) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse13 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse20 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse19 (* |ULTIMATE.start_main_~q~0#1| .cse1)) (.cse10 (* 2 .cse1))) (let ((.cse6 (- |ULTIMATE.start_main_~r~0#1|)) (.cse8 (<= 1 .cse10)) (.cse9 (= 2 |ULTIMATE.start_main_~p~0#1|)) (.cse14 (not (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (.cse15 (= (+ .cse20 .cse7) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse1) .cse19 |ULTIMATE.start_main_~r~0#1|))) (.cse4 (<= .cse7 2)) (.cse16 (= (* |ULTIMATE.start_main_~p~0#1| .cse1) |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse7)) (.cse17 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0)) (.cse18 (<= .cse20 |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse2 (<= .cse1 2)) (.cse5 (= (+ .cse19 |ULTIMATE.start_main_~r~0#1|) .cse7)) (.cse12 (= .cse13 .cse7))) (or (and .cse0 (= |ULTIMATE.start_main_~d~0#1| .cse1) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse1)) (and .cse0 .cse4 (<= 0 |ULTIMATE.start_main_~r~0#1|) (= 2 |ULTIMATE.start_main_~q~0#1|) .cse5 (= |ULTIMATE.start_main_~d~0#1| (div (+ .cse6 .cse7) 2)) .cse8) (and .cse9 (= .cse10 |ULTIMATE.start_main_~d~0#1|) .cse11 (<= (+ (* (div (+ (- 1) .cse6 (- |ULTIMATE.start_main_~d~0#1|)) 4294967296) 4294967296) 4294967294 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 0) .cse12 (<= .cse10 .cse13) .cse8) (and .cse14 .cse15 .cse9 .cse16 .cse2 .cse3 .cse17 .cse18) (and .cse14 .cse15 .cse4 .cse16 .cse2 .cse3 .cse17 .cse18) (and .cse0 (< .cse7 (* 2 |ULTIMATE.start_main_~d~0#1|)) .cse11 (<= |ULTIMATE.start_main_~d~0#1| .cse7) .cse2 .cse5 .cse12))))) [2022-11-18 18:40:56,743 INFO L895 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~d~0#1| .cse0)) (.cse5 (<= 1 .cse0)) (.cse6 (<= .cse0 2)) (.cse2 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (or (let ((.cse3 (- |ULTIMATE.start_main_~r~0#1|))) (and (<= 0 (+ (div (+ (- .cse0) (- 2147483647)) 2147483648) 1)) .cse1 (<= .cse2 2) (<= (+ (* 2 |ULTIMATE.start_main_~r~0#1|) 1) .cse2) (<= 0 |ULTIMATE.start_main_~r~0#1|) (= 2 |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~d~0#1| (div (+ .cse3 .cse2) 2)) (<= (+ 2 |ULTIMATE.start_main_~r~0#1| (* (div (+ (- 1) .cse3 .cse2) 2) 2)) .cse2) (<= 1 (* 2 .cse0)))) (and .cse1 .cse4 .cse5 (= |ULTIMATE.start_main_~q~0#1| 0) .cse6 (= |ULTIMATE.start_main_~r~0#1| .cse2) (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse0)) (and .cse1 .cse4 .cse5 (< .cse2 (* 2 |ULTIMATE.start_main_~d~0#1|)) (<= |ULTIMATE.start_main_~d~0#1| .cse2) .cse6 (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse2) (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse2))))) [2022-11-18 18:40:56,743 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (<= .cse1 2)) (.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse1))) (or (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (= (+ .cse0 .cse1) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse2) (* |ULTIMATE.start_main_~q~0#1| .cse2) |ULTIMATE.start_main_~r~0#1|)) (<= 1 .cse2) .cse3 (<= 2 |ULTIMATE.start_main_~p~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse2) |ULTIMATE.start_main_~d~0#1|) .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) (<= 1 (mod |ULTIMATE.start_main_~d~0#1| 4294967296)) .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (<= .cse2 2) .cse4)))) [2022-11-18 18:40:56,743 INFO L902 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-11-18 18:40:56,743 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-11-18 18:40:56,743 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse13 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse20 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse19 (* |ULTIMATE.start_main_~q~0#1| .cse1)) (.cse10 (* 2 .cse1))) (let ((.cse6 (- |ULTIMATE.start_main_~r~0#1|)) (.cse8 (<= 1 .cse10)) (.cse9 (= 2 |ULTIMATE.start_main_~p~0#1|)) (.cse14 (not (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (.cse15 (= (+ .cse20 .cse7) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse1) .cse19 |ULTIMATE.start_main_~r~0#1|))) (.cse4 (<= .cse7 2)) (.cse16 (= (* |ULTIMATE.start_main_~p~0#1| .cse1) |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse7)) (.cse17 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0)) (.cse18 (<= .cse20 |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse2 (<= .cse1 2)) (.cse5 (= (+ .cse19 |ULTIMATE.start_main_~r~0#1|) .cse7)) (.cse12 (= .cse13 .cse7))) (or (and .cse0 (= |ULTIMATE.start_main_~d~0#1| .cse1) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse1)) (and .cse0 .cse4 (<= 0 |ULTIMATE.start_main_~r~0#1|) (= 2 |ULTIMATE.start_main_~q~0#1|) .cse5 (= |ULTIMATE.start_main_~d~0#1| (div (+ .cse6 .cse7) 2)) .cse8) (and .cse9 (= .cse10 |ULTIMATE.start_main_~d~0#1|) .cse11 (<= (+ (* (div (+ (- 1) .cse6 (- |ULTIMATE.start_main_~d~0#1|)) 4294967296) 4294967296) 4294967294 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 0) .cse12 (<= .cse10 .cse13) .cse8) (and .cse14 .cse15 .cse9 .cse16 .cse2 .cse3 .cse17 .cse18) (and .cse14 .cse15 .cse4 .cse16 .cse2 .cse3 .cse17 .cse18) (and .cse0 (< .cse7 (* 2 |ULTIMATE.start_main_~d~0#1|)) .cse11 (<= |ULTIMATE.start_main_~d~0#1| .cse7) .cse2 .cse5 .cse12))))) [2022-11-18 18:40:56,743 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse18 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse12 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse20 (* |ULTIMATE.start_main_~q~0#1| .cse1)) (.cse19 (* |ULTIMATE.start_main_~p~0#1| .cse1))) (let ((.cse8 (- |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= 1 |ULTIMATE.start_main_~p~0#1|)) (.cse5 (= (+ |ULTIMATE.start_main_~d~0#1| .cse12) (+ .cse20 .cse19 |ULTIMATE.start_main_~r~0#1|))) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse6 (<= 1 .cse1)) (.cse7 (<= |ULTIMATE.start_main_~d~0#1| .cse12)) (.cse9 (= (+ .cse20 |ULTIMATE.start_main_~r~0#1|) .cse12)) (.cse10 (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse12)) (.cse13 (not (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (.cse14 (= (+ .cse18 .cse12) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse1) .cse20 |ULTIMATE.start_main_~r~0#1|))) (.cse11 (<= .cse12 2)) (.cse15 (= .cse19 |ULTIMATE.start_main_~d~0#1|)) (.cse2 (<= .cse1 2)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse12)) (.cse16 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0)) (.cse17 (<= .cse18 |ULTIMATE.start_main_~r~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~d~0#1| .cse1) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse1)) (and .cse4 .cse5 .cse6 .cse7 (<= (+ (* (div (+ (- 1) .cse8 (- |ULTIMATE.start_main_~d~0#1|)) 4294967296) 4294967296) 4294967294 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 0) .cse2 .cse9 .cse10 (<= (+ 2 (* 2 (div (+ (- 1) |ULTIMATE.start_main_~d~0#1|) 2))) |ULTIMATE.start_main_~d~0#1|)) (and .cse0 .cse11 (<= 0 |ULTIMATE.start_main_~r~0#1|) (= 2 |ULTIMATE.start_main_~q~0#1|) .cse9 (= |ULTIMATE.start_main_~d~0#1| (div (+ .cse8 .cse12) 2)) (<= 1 (* 2 .cse1))) (and .cse4 .cse5 .cse0 .cse6 (< .cse12 (* 2 |ULTIMATE.start_main_~d~0#1|)) .cse7 .cse2 .cse9 .cse10) (and .cse13 .cse14 (= 2 |ULTIMATE.start_main_~p~0#1|) .cse15 .cse2 .cse3 .cse16 .cse17) (and .cse13 .cse14 .cse11 .cse15 .cse2 .cse3 .cse16 .cse17))))) [2022-11-18 18:40:56,744 INFO L899 garLoopResultBuilder]: For program point L39(lines 36 44) no Hoare annotation was computed. [2022-11-18 18:40:56,744 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-11-18 18:40:56,744 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-11-18 18:40:56,744 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2022-11-18 18:40:56,744 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2022-11-18 18:40:56,744 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-11-18 18:40:56,744 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-11-18 18:40:56,745 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-11-18 18:40:56,745 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-11-18 18:40:56,745 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-11-18 18:40:56,745 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-18 18:40:56,748 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:56,751 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:40:56,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:40:56 BoogieIcfgContainer [2022-11-18 18:40:56,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:40:56,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:40:56,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:40:56,775 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:40:56,776 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:34:21" (3/4) ... [2022-11-18 18:40:56,779 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 18:40:56,793 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-18 18:40:56,793 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-18 18:40:56,799 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-18 18:40:56,800 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-18 18:40:56,800 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 18:40:56,800 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 18:40:56,856 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 18:40:56,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:40:56,856 INFO L158 Benchmark]: Toolchain (without parser) took 395733.02ms. Allocated memory was 119.5MB in the beginning and 184.5MB in the end (delta: 65.0MB). Free memory was 83.1MB in the beginning and 157.0MB in the end (delta: -73.9MB). Peak memory consumption was 100.2MB. Max. memory is 16.1GB. [2022-11-18 18:40:56,857 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory was 99.5MB in the beginning and 99.3MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:40:56,858 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.62ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 94.7MB in the end (delta: -11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:40:56,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.38ms. Allocated memory is still 119.5MB. Free memory was 94.7MB in the beginning and 93.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:40:56,859 INFO L158 Benchmark]: Boogie Preprocessor took 35.52ms. Allocated memory is still 119.5MB. Free memory was 93.5MB in the beginning and 92.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:40:56,861 INFO L158 Benchmark]: RCFGBuilder took 329.26ms. Allocated memory is still 119.5MB. Free memory was 92.0MB in the beginning and 81.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:40:56,862 INFO L158 Benchmark]: TraceAbstraction took 394806.93ms. Allocated memory was 119.5MB in the beginning and 184.5MB in the end (delta: 65.0MB). Free memory was 80.5MB in the beginning and 53.4MB in the end (delta: 27.1MB). Peak memory consumption was 99.2MB. Max. memory is 16.1GB. [2022-11-18 18:40:56,862 INFO L158 Benchmark]: Witness Printer took 85.37ms. Allocated memory is still 184.5MB. Free memory was 53.4MB in the beginning and 157.0MB in the end (delta: -103.6MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2022-11-18 18:40:56,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory was 99.5MB in the beginning and 99.3MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 419.62ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 94.7MB in the end (delta: -11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.38ms. Allocated memory is still 119.5MB. Free memory was 94.7MB in the beginning and 93.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.52ms. Allocated memory is still 119.5MB. Free memory was 93.5MB in the beginning and 92.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 329.26ms. Allocated memory is still 119.5MB. Free memory was 92.0MB in the beginning and 81.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 394806.93ms. Allocated memory was 119.5MB in the beginning and 184.5MB in the end (delta: 65.0MB). Free memory was 80.5MB in the beginning and 53.4MB in the end (delta: 27.1MB). Peak memory consumption was 99.2MB. Max. memory is 16.1GB. * Witness Printer took 85.37ms. Allocated memory is still 184.5MB. Free memory was 53.4MB in the beginning and 157.0MB in the end (delta: -103.6MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 394.7s, OverallIterations: 12, TraceHistogramMax: 16, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 84.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 11.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 527 SdHoareTripleChecker+Valid, 34.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 495 mSDsluCounter, 1745 SdHoareTripleChecker+Invalid, 34.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1312 mSDsCounter, 617 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3260 IncrementalHoareTripleChecker+Invalid, 3882 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 617 mSolverCounterUnsat, 433 mSDtfsCounter, 3260 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1402 GetRequests, 1198 SyntacticMatches, 3 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 149.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=7, InterpolantAutomatonStates: 128, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 58 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 85 PreInvPairs, 123 NumberOfFragments, 1462 HoareAnnotationTreeSize, 85 FomulaSimplifications, 226 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 8043 FormulaSimplificationTreeSizeReductionInter, 11.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 294.5s InterpolantComputationTime, 777 NumberOfCodeBlocks, 750 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1388 ConstructedInterpolants, 0 QuantifiedInterpolants, 20594 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1541 ConjunctsInSsa, 245 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 3650/4059 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((((((((p == 1 && d == B % 4294967296) && q == 0) && B % 4294967296 <= 2) && r == A % 4294967296) && r + 1 <= B % 4294967296) || ((((((p == 1 && A % 4294967296 <= 2) && 0 <= r) && 2 == q) && q * (B % 4294967296) + r == A % 4294967296) && d == (-r + A % 4294967296) / 2) && 1 <= 2 * (B % 4294967296))) || ((((((2 == p && 2 * (B % 4294967296) == d) && p == q) && (-1 + -r + -d) / 4294967296 * 4294967296 + 4294967294 + d + r <= 0) && d + r == A % 4294967296) && 2 * (B % 4294967296) <= d + r) && 1 <= 2 * (B % 4294967296))) || (((((((!(d <= r) && d / 2 + A % 4294967296 == p / 2 * (B % 4294967296) + q * (B % 4294967296) + r) && 2 == p) && p * (B % 4294967296) == d) && B % 4294967296 <= 2) && r == A % 4294967296) && d % 2 == 0) && d / 2 <= r)) || (((((((!(d <= r) && d / 2 + A % 4294967296 == p / 2 * (B % 4294967296) + q * (B % 4294967296) + r) && A % 4294967296 <= 2) && p * (B % 4294967296) == d) && B % 4294967296 <= 2) && r == A % 4294967296) && d % 2 == 0) && d / 2 <= r)) || ((((((p == 1 && A % 4294967296 < 2 * d) && p == q) && d <= A % 4294967296) && B % 4294967296 <= 2) && q * (B % 4294967296) + r == A % 4294967296) && d + r == A % 4294967296) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((d / 2 + A % 4294967296 == p / 2 * (B % 4294967296) + q * (B % 4294967296) + r && 1 <= B % 4294967296) && A % 4294967296 <= 2) && 2 <= p) && p * (B % 4294967296) == d) && r == A % 4294967296) && d % 2 == 0) && d / 2 <= r) || ((((((p == 1 && d == B % 4294967296) && 1 <= d % 4294967296) && A % 4294967296 <= 2) && q == 0) && B % 4294967296 <= 2) && r == A % 4294967296) RESULT: Ultimate proved your program to be correct! [2022-11-18 18:40:56,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_321248cc-6567-487f-a5b6-512da9a91e61/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE