./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.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_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/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_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/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_57a5fc12-ac55-4268-beb8-2e192b2808e2/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 53086523abe0dc699ccd28b0916f17f8825d4641577f06835b9d81e9579a444f --- 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 21:07:04,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:07:04,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:07:04,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:07:04,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:07:04,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:07:04,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:07:04,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:07:04,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:07:04,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:07:04,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:07:04,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:07:04,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:07:04,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:07:04,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:07:04,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:07:04,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:07:04,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:07:04,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:07:04,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:07:04,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:07:04,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:07:04,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:07:04,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:07:04,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:07:04,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:07:04,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:07:04,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:07:04,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:07:04,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:07:04,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:07:04,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:07:04,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:07:04,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:07:04,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:07:04,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:07:04,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:07:04,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:07:04,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:07:04,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:07:04,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:07:04,684 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 21:07:04,711 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:07:04,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:07:04,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:07:04,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:07:04,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:07:04,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:07:04,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:07:04,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:07:04,715 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:07:04,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:07:04,716 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:07:04,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:07:04,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:07:04,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:07:04,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:07:04,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:07:04,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:07:04,717 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:07:04,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:07:04,718 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:07:04,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:07:04,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:07:04,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:07:04,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:07:04,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:07:04,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:07:04,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:07:04,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:07:04,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:07:04,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:07:04,721 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:07:04,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:07:04,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:07:04,722 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_57a5fc12-ac55-4268-beb8-2e192b2808e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53086523abe0dc699ccd28b0916f17f8825d4641577f06835b9d81e9579a444f [2022-11-18 21:07:05,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:07:05,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:07:05,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:07:05,160 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:07:05,161 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:07:05,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c [2022-11-18 21:07:05,247 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/data/3e3b657cc/bf724e8277604b8794e511394cbd1c34/FLAGbc884cb27 [2022-11-18 21:07:05,892 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:07:05,893 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c [2022-11-18 21:07:05,915 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/data/3e3b657cc/bf724e8277604b8794e511394cbd1c34/FLAGbc884cb27 [2022-11-18 21:07:06,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/data/3e3b657cc/bf724e8277604b8794e511394cbd1c34 [2022-11-18 21:07:06,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:07:06,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:07:06,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:07:06,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:07:06,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:07:06,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:07:06" (1/1) ... [2022-11-18 21:07:06,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ffa2fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:06, skipping insertion in model container [2022-11-18 21:07:06,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:07:06" (1/1) ... [2022-11-18 21:07:06,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:07:06,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:07:06,487 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_57a5fc12-ac55-4268-beb8-2e192b2808e2/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c[458,471] [2022-11-18 21:07:06,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:07:06,532 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:07:06,552 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_57a5fc12-ac55-4268-beb8-2e192b2808e2/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c[458,471] [2022-11-18 21:07:06,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:07:06,601 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:07:06,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:06 WrapperNode [2022-11-18 21:07:06,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:07:06,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:07:06,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:07:06,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:07:06,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:06" (1/1) ... [2022-11-18 21:07:06,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:06" (1/1) ... [2022-11-18 21:07:06,651 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2022-11-18 21:07:06,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:07:06,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:07:06,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:07:06,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:07:06,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:06" (1/1) ... [2022-11-18 21:07:06,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:06" (1/1) ... [2022-11-18 21:07:06,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:06" (1/1) ... [2022-11-18 21:07:06,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:06" (1/1) ... [2022-11-18 21:07:06,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:06" (1/1) ... [2022-11-18 21:07:06,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:06" (1/1) ... [2022-11-18 21:07:06,701 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:06" (1/1) ... [2022-11-18 21:07:06,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:06" (1/1) ... [2022-11-18 21:07:06,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:07:06,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:07:06,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:07:06,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:07:06,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:06" (1/1) ... [2022-11-18 21:07:06,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:07:06,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:06,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:07:06,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:07:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:07:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:07:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:07:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:07:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 21:07:06,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 21:07:06,907 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:07:06,909 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:07:07,048 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:07:07,055 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:07:07,056 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 21:07:07,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:07:07 BoogieIcfgContainer [2022-11-18 21:07:07,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:07:07,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:07:07,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:07:07,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:07:07,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:07:06" (1/3) ... [2022-11-18 21:07:07,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645e604e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:07:07, skipping insertion in model container [2022-11-18 21:07:07,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:07:06" (2/3) ... [2022-11-18 21:07:07,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645e604e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:07:07, skipping insertion in model container [2022-11-18 21:07:07,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:07:07" (3/3) ... [2022-11-18 21:07:07,075 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound10.c [2022-11-18 21:07:07,099 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:07:07,100 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 21:07:07,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:07:07,191 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;@762a4cf4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:07:07,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 21:07:07,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 21:07:07,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 21:07:07,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:07:07,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:07:07,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:07:07,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:07,215 INFO L85 PathProgramCache]: Analyzing trace with hash -589436290, now seen corresponding path program 1 times [2022-11-18 21:07:07,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:07,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879977531] [2022-11-18 21:07:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:07,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:07,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:07,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879977531] [2022-11-18 21:07:07,396 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 21:07:07,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13671022] [2022-11-18 21:07:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:07,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:07,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:07,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:07,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:07:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:07,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 21:07:07,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:07,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:07,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:07:07,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13671022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:07:07,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:07:07,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:07:07,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841334672] [2022-11-18 21:07:07,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:07:07,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 21:07:07,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:07,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 21:07:07,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 21:07:07,724 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:07:07,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:07:07,779 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2022-11-18 21:07:07,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 21:07:07,782 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 21:07:07,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:07:07,805 INFO L225 Difference]: With dead ends: 35 [2022-11-18 21:07:07,805 INFO L226 Difference]: Without dead ends: 15 [2022-11-18 21:07:07,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 21:07:07,827 INFO L413 NwaCegarLoop]: 21 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, 21 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 21:07:07,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:07:07,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-18 21:07:07,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-18 21:07:07,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:07:07,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-18 21:07:07,889 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2022-11-18 21:07:07,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:07:07,890 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-18 21:07:07,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:07:07,890 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-18 21:07:07,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 21:07:07,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:07:07,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:07:07,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:08,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 21:07:08,106 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:07:08,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:08,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1187358532, now seen corresponding path program 1 times [2022-11-18 21:07:08,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:08,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725143403] [2022-11-18 21:07:08,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:08,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:08,138 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:07:08,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186099403] [2022-11-18 21:07:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:08,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:08,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:08,146 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:08,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:07:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:08,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:07:08,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:08,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:08,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:07:08,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:08,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725143403] [2022-11-18 21:07:08,377 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:07:08,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186099403] [2022-11-18 21:07:08,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186099403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:07:08,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:07:08,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:07:08,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274683134] [2022-11-18 21:07:08,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:07:08,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:07:08,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:08,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:07:08,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:07:08,382 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:07:08,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:07:08,608 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-11-18 21:07:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:07:08,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 21:07:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:07:08,610 INFO L225 Difference]: With dead ends: 26 [2022-11-18 21:07:08,611 INFO L226 Difference]: Without dead ends: 22 [2022-11-18 21:07:08,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 21:07:08,614 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:07:08,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 45 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:07:08,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-18 21:07:08,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-18 21:07:08,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 21:07:08,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-11-18 21:07:08,629 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2022-11-18 21:07:08,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:07:08,629 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-11-18 21:07:08,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:07:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-11-18 21:07:08,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 21:07:08,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:07:08,631 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:07:08,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:08,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:08,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:07:08,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:08,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1781398469, now seen corresponding path program 1 times [2022-11-18 21:07:08,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:08,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769999449] [2022-11-18 21:07:08,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:08,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:08,864 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:07:08,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281878160] [2022-11-18 21:07:08,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:08,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:08,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:08,898 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:08,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:07:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:09,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 21:07:09,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:09,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:09,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:07:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:07:09,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:09,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769999449] [2022-11-18 21:07:09,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:07:09,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281878160] [2022-11-18 21:07:09,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281878160] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:07:09,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:07:09,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2022-11-18 21:07:09,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547206508] [2022-11-18 21:07:09,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:07:09,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:07:09,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:09,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:07:09,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:07:09,645 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:07:09,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:07:09,874 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-11-18 21:07:09,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:07:09,875 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-18 21:07:09,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:07:09,877 INFO L225 Difference]: With dead ends: 33 [2022-11-18 21:07:09,877 INFO L226 Difference]: Without dead ends: 27 [2022-11-18 21:07:09,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-18 21:07:09,879 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 24 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:07:09,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 39 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:07:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-18 21:07:09,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-18 21:07:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:07:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-11-18 21:07:09,893 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2022-11-18 21:07:09,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:07:09,894 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-11-18 21:07:09,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:07:09,895 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-11-18 21:07:09,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 21:07:09,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:07:09,897 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:07:09,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:10,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:10,103 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:07:10,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:10,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1711372296, now seen corresponding path program 1 times [2022-11-18 21:07:10,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:10,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041144551] [2022-11-18 21:07:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:10,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:10,121 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:07:10,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570360386] [2022-11-18 21:07:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:10,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:10,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:10,124 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:10,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:07:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:10,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 21:07:10,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:10,471 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:07:10,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:07:47,026 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) 4) 0)))) is different from true [2022-11-18 21:08:05,146 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) 4) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-18 21:08:11,213 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-18 21:08:13,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:13,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041144551] [2022-11-18 21:08:13,258 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:08:13,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570360386] [2022-11-18 21:08:13,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570360386] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:13,259 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:08:13,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-11-18 21:08:13,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635935036] [2022-11-18 21:08:13,260 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 21:08:13,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 21:08:13,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:13,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 21:08:13,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=118, Unknown=8, NotChecked=72, Total=240 [2022-11-18 21:08:13,261 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:08:13,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:13,449 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-11-18 21:08:13,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:08:13,450 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-11-18 21:08:13,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:13,451 INFO L225 Difference]: With dead ends: 31 [2022-11-18 21:08:13,451 INFO L226 Difference]: Without dead ends: 26 [2022-11-18 21:08:13,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=62, Invalid=182, Unknown=8, NotChecked=90, Total=342 [2022-11-18 21:08:13,453 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:13,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 60 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:08:13,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-18 21:08:13,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-18 21:08:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 21:08:13,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-11-18 21:08:13,463 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2022-11-18 21:08:13,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:13,464 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-11-18 21:08:13,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:08:13,464 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-11-18 21:08:13,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 21:08:13,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:13,465 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:13,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:13,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:13,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:13,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:13,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1075497887, now seen corresponding path program 2 times [2022-11-18 21:08:13,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:13,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966435011] [2022-11-18 21:08:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:13,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:13,681 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:08:13,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230461169] [2022-11-18 21:08:13,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:08:13,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:13,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:13,684 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:13,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:08:13,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:08:13,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:08:13,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 21:08:13,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:13,969 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 21:08:13,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:08:18,287 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-18 21:08:18,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966435011] [2022-11-18 21:08:18,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:08:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230461169] [2022-11-18 21:08:18,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230461169] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:18,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:08:18,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-11-18 21:08:18,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645110370] [2022-11-18 21:08:18,297 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 21:08:18,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:08:18,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:18,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:08:18,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=148, Unknown=1, NotChecked=24, Total=210 [2022-11-18 21:08:18,298 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 21:08:18,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:18,517 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-11-18 21:08:18,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:08:18,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2022-11-18 21:08:18,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:18,519 INFO L225 Difference]: With dead ends: 34 [2022-11-18 21:08:18,520 INFO L226 Difference]: Without dead ends: 29 [2022-11-18 21:08:18,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=56, Invalid=219, Unknown=1, NotChecked=30, Total=306 [2022-11-18 21:08:18,521 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:18,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 68 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:08:18,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-18 21:08:18,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-18 21:08:18,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 21:08:18,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-11-18 21:08:18,533 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2022-11-18 21:08:18,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:18,534 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-11-18 21:08:18,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 21:08:18,534 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-11-18 21:08:18,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 21:08:18,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:18,536 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:18,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:18,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:18,743 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:18,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:18,743 INFO L85 PathProgramCache]: Analyzing trace with hash 817917912, now seen corresponding path program 3 times [2022-11-18 21:08:18,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:18,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794616064] [2022-11-18 21:08:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:18,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:18,757 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:08:18,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948125424] [2022-11-18 21:08:18,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:08:18,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:18,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:18,785 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:18,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:08:18,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 21:08:18,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:08:18,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 21:08:18,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:19,275 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 21:08:19,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:08:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 21:08:19,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:19,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794616064] [2022-11-18 21:08:19,653 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:08:19,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948125424] [2022-11-18 21:08:19,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948125424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:08:19,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:08:19,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2022-11-18 21:08:19,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646145753] [2022-11-18 21:08:19,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:08:19,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 21:08:19,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:19,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 21:08:19,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:08:19,656 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 21:08:21,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:21,062 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2022-11-18 21:08:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 21:08:21,063 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 36 [2022-11-18 21:08:21,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:21,064 INFO L225 Difference]: With dead ends: 47 [2022-11-18 21:08:21,064 INFO L226 Difference]: Without dead ends: 41 [2022-11-18 21:08:21,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2022-11-18 21:08:21,066 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 59 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:21,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 126 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:08:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-18 21:08:21,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-18 21:08:21,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 9 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 21:08:21,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-11-18 21:08:21,100 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2022-11-18 21:08:21,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:21,104 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-11-18 21:08:21,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 21:08:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-11-18 21:08:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 21:08:21,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:21,112 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:21,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 21:08:21,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:21,319 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:21,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:21,320 INFO L85 PathProgramCache]: Analyzing trace with hash 385378200, now seen corresponding path program 4 times [2022-11-18 21:08:21,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:21,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991911712] [2022-11-18 21:08:21,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:21,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:21,341 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:08:21,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907170363] [2022-11-18 21:08:21,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 21:08:21,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:21,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:21,349 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:21,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 21:08:21,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 21:08:21,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:08:21,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-18 21:08:21,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:21,787 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 36 proven. 85 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-18 21:08:21,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:08:25,927 WARN L837 $PredicateComparison]: unable to prove that (or (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-18 21:08:46,045 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 2)) 4) 0) (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_18|))))) is different from true [2022-11-18 21:09:04,118 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 2)) 4) 0) (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_18|)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-18 21:09:10,165 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-18 21:09:12,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:12,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991911712] [2022-11-18 21:09:12,199 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:09:12,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907170363] [2022-11-18 21:09:12,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907170363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:12,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:09:12,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-11-18 21:09:12,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829729142] [2022-11-18 21:09:12,200 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:12,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 21:09:12,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:12,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 21:09:12,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=269, Unknown=4, NotChecked=140, Total=462 [2022-11-18 21:09:12,202 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 21:09:12,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:12,687 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-11-18 21:09:12,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:09:12,688 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 64 [2022-11-18 21:09:12,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:12,689 INFO L225 Difference]: With dead ends: 49 [2022-11-18 21:09:12,689 INFO L226 Difference]: Without dead ends: 44 [2022-11-18 21:09:12,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=68, Invalid=364, Unknown=4, NotChecked=164, Total=600 [2022-11-18 21:09:12,690 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:12,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 186 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 21:09:12,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-18 21:09:12,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-18 21:09:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 10 states have call successors, (10), 3 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 21:09:12,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2022-11-18 21:09:12,726 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 64 [2022-11-18 21:09:12,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:12,727 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2022-11-18 21:09:12,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 21:09:12,727 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2022-11-18 21:09:12,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-18 21:09:12,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:12,737 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:12,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:12,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:12,944 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:12,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:12,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2073985217, now seen corresponding path program 5 times [2022-11-18 21:09:12,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:12,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413035305] [2022-11-18 21:09:12,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:12,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:12,962 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:09:12,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226144536] [2022-11-18 21:09:12,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 21:09:12,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:12,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:12,972 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:12,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 21:09:13,071 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-11-18 21:09:13,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:09:13,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-18 21:09:13,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 20 proven. 130 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-18 21:09:13,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:13,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:13,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413035305] [2022-11-18 21:09:13,740 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:09:13,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226144536] [2022-11-18 21:09:13,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226144536] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:13,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:09:13,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-11-18 21:09:13,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7153239] [2022-11-18 21:09:13,741 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:13,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:09:13,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:13,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:09:13,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:09:13,746 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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 21:09:14,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:14,313 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2022-11-18 21:09:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 21:09:14,313 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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) Word has length 71 [2022-11-18 21:09:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:14,314 INFO L225 Difference]: With dead ends: 52 [2022-11-18 21:09:14,315 INFO L226 Difference]: Without dead ends: 47 [2022-11-18 21:09:14,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-11-18 21:09:14,316 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:14,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 214 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:09:14,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-18 21:09:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-18 21:09:14,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 11 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-18 21:09:14,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-11-18 21:09:14,342 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 71 [2022-11-18 21:09:14,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:09:14,343 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-11-18 21:09:14,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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 21:09:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-11-18 21:09:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 21:09:14,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:09:14,345 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:14,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:14,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:14,551 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:09:14,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:14,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1353348984, now seen corresponding path program 6 times [2022-11-18 21:09:14,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:14,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152254066] [2022-11-18 21:09:14,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:14,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:14,562 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:09:14,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15719085] [2022-11-18 21:09:14,563 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 21:09:14,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:14,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:14,564 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:14,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 21:09:14,868 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-11-18 21:09:14,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:09:14,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 21:09:14,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 28 proven. 154 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-18 21:09:15,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:20,009 WARN L837 $PredicateComparison]: unable to prove that (or (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 12) 36) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* 6 |c_ULTIMATE.start_main_~k~0#1|))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 6) |c_ULTIMATE.start_main_~k~0#1|) (not (< (+ |c_ULTIMATE.start_main_~c~0#1| 5) |c_ULTIMATE.start_main_~k~0#1|)) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-18 21:09:40,084 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_36| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 3)) 4) 0) (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 12) 36) (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_36|) (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_36| 6)))))) is different from true [2022-11-18 21:09:58,149 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_36| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 3)) 4) 0) (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 12) 36) (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_36|) (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_36| 6))))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-18 21:10:04,210 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (<= |ULTIMATE.start_main_~k~0#1| (+ |c_ULTIMATE.start_main_~c~0#1| 6)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 7) |ULTIMATE.start_main_~k~0#1|) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 49 (* |c_ULTIMATE.start_main_~y~0#1| 14)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|) (* 7 |ULTIMATE.start_main_~k~0#1|))))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-18 21:10:06,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:06,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152254066] [2022-11-18 21:10:06,253 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:10:06,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15719085] [2022-11-18 21:10:06,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15719085] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:06,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:10:06,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-11-18 21:10:06,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992173688] [2022-11-18 21:10:06,253 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 21:10:06,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 21:10:06,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:06,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 21:10:06,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=542, Unknown=4, NotChecked=204, Total=870 [2022-11-18 21:10:06,256 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-18 21:10:06,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:06,903 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2022-11-18 21:10:06,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 21:10:06,904 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 78 [2022-11-18 21:10:06,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:06,906 INFO L225 Difference]: With dead ends: 55 [2022-11-18 21:10:06,906 INFO L226 Difference]: Without dead ends: 50 [2022-11-18 21:10:06,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=139, Invalid=685, Unknown=4, NotChecked=228, Total=1056 [2022-11-18 21:10:06,908 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:06,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 244 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:10:06,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-18 21:10:06,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-18 21:10:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 21:10:06,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2022-11-18 21:10:06,955 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 78 [2022-11-18 21:10:06,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:06,955 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2022-11-18 21:10:06,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-18 21:10:06,956 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2022-11-18 21:10:06,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-18 21:10:06,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:06,959 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:06,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-18 21:10:07,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:07,166 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:07,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:07,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1817498849, now seen corresponding path program 7 times [2022-11-18 21:10:07,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:07,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468702599] [2022-11-18 21:10:07,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:07,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:07,189 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:10:07,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827669319] [2022-11-18 21:10:07,195 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 21:10:07,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:07,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:07,196 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:07,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 21:10:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:07,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 21:10:07,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 51 proven. 166 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 21:10:07,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:10:11,861 WARN L837 $PredicateComparison]: unable to prove that (or (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-18 21:10:32,392 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_39| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_39|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74|)) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| 3)) 4) 0)))) is different from true [2022-11-18 21:10:50,469 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_39| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_39|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74|)) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| 3)) 4) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-18 21:10:56,519 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-18 21:10:58,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:58,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468702599] [2022-11-18 21:10:58,548 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:10:58,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827669319] [2022-11-18 21:10:58,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827669319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:58,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:10:58,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-11-18 21:10:58,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075768300] [2022-11-18 21:10:58,549 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 21:10:58,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 21:10:58,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:58,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 21:10:58,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=377, Unknown=4, NotChecked=164, Total=600 [2022-11-18 21:10:58,551 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 21:10:59,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:59,186 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2022-11-18 21:10:59,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:10:59,187 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 85 [2022-11-18 21:10:59,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:59,188 INFO L225 Difference]: With dead ends: 58 [2022-11-18 21:10:59,188 INFO L226 Difference]: Without dead ends: 53 [2022-11-18 21:10:59,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=74, Invalid=490, Unknown=4, NotChecked=188, Total=756 [2022-11-18 21:10:59,190 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:59,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 260 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:10:59,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-18 21:10:59,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-18 21:10:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-18 21:10:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2022-11-18 21:10:59,211 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 85 [2022-11-18 21:10:59,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:59,212 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2022-11-18 21:10:59,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 21:10:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2022-11-18 21:10:59,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 21:10:59,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:59,214 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:59,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-18 21:10:59,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 21:10:59,421 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:59,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:59,422 INFO L85 PathProgramCache]: Analyzing trace with hash 638795608, now seen corresponding path program 8 times [2022-11-18 21:10:59,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:59,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147510549] [2022-11-18 21:10:59,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:59,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:59,451 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:10:59,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992585514] [2022-11-18 21:10:59,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:10:59,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:59,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:59,457 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:59,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 21:10:59,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:10:59,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:10:59,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 21:10:59,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:11:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-11-18 21:11:00,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:11:00,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:11:00,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147510549] [2022-11-18 21:11:00,086 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:11:00,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992585514] [2022-11-18 21:11:00,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992585514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:11:00,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:11:00,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 21:11:00,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453507074] [2022-11-18 21:11:00,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:11:00,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 21:11:00,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:00,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 21:11:00,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:11:00,089 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 12 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-18 21:11:00,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:00,575 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2022-11-18 21:11:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:11:00,576 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 12 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 92 [2022-11-18 21:11:00,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:00,577 INFO L225 Difference]: With dead ends: 57 [2022-11-18 21:11:00,577 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 21:11:00,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2022-11-18 21:11:00,579 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:00,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 104 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:11:00,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 21:11:00,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 21:11:00,580 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 21:11:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 21:11:00,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 92 [2022-11-18 21:11:00,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:00,581 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 21:11:00,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 12 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-18 21:11:00,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 21:11:00,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 21:11:00,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 21:11:00,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 21:11:00,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:00,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-18 21:11:02,790 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-18 21:11:02,791 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse4 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse2 (or (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4) (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|))) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~k~0#1| 10)) (.cse3 (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4) (* |ULTIMATE.start_main_~x~0#1| 4)))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 (= 2 |ULTIMATE.start_main_~c~0#1|) .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) .cse1 .cse2 .cse3) (and .cse0 (= 5 |ULTIMATE.start_main_~y~0#1|) (= 5 |ULTIMATE.start_main_~c~0#1|) .cse1 .cse2 .cse3) (and .cse0 (= 7 |ULTIMATE.start_main_~c~0#1|) (= 7 |ULTIMATE.start_main_~y~0#1|) .cse1 (< 6 |ULTIMATE.start_main_~k~0#1|) .cse3) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) .cse0 (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) .cse1 (= |ULTIMATE.start_main_~x~0#1| 0)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 8) (= |ULTIMATE.start_main_~y~0#1| 8) (< 7 |ULTIMATE.start_main_~k~0#1|) .cse3) (and .cse0 (= 6 |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 .cse3 (= 6 |ULTIMATE.start_main_~c~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 4) .cse1 .cse2 (= |ULTIMATE.start_main_~c~0#1| 4) .cse3) (and .cse0 (= 3 |ULTIMATE.start_main_~y~0#1|) .cse1 (< 2 |ULTIMATE.start_main_~k~0#1|) (= 3 |ULTIMATE.start_main_~c~0#1|) .cse3) (and .cse0 (= 9 |ULTIMATE.start_main_~c~0#1|) .cse1 (< 8 |ULTIMATE.start_main_~k~0#1|) (= 9 |ULTIMATE.start_main_~y~0#1|) .cse3) (and .cse0 (<= 10 |ULTIMATE.start_main_~c~0#1|) (< 9 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 10) .cse1 (= |ULTIMATE.start_main_~y~0#1| 10) .cse3)))) [2022-11-18 21:11:02,791 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse0 (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1) (* |ULTIMATE.start_main_~x~0#1| 4)))) (or (and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (< 0 |ULTIMATE.start_main_~k~0#1|) .cse0) (and (<= |ULTIMATE.start_main_~k~0#1| 2) (= 2 |ULTIMATE.start_main_~y~0#1|) (< 1 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2) .cse0) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) (let ((.cse3 (< (+ |ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|)) (.cse2 (< (+ 2 |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~k~0#1|))) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1) (or .cse2 (not .cse3)) (or (not (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) .cse3) (<= |ULTIMATE.start_main_~k~0#1| 10) (or (< (+ 3 |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~k~0#1|) (not .cse2)) .cse0))))) [2022-11-18 21:11:02,791 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-11-18 21:11:02,791 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2022-11-18 21:11:02,791 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-18 21:11:02,791 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-18 21:11:02,791 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-18 21:11:02,792 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse4 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse2 (or (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4) (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|))) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~k~0#1| 10)) (.cse3 (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4) (* |ULTIMATE.start_main_~x~0#1| 4)))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 (= 2 |ULTIMATE.start_main_~c~0#1|) .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) .cse1 .cse2 .cse3) (and .cse0 (= 5 |ULTIMATE.start_main_~y~0#1|) (= 5 |ULTIMATE.start_main_~c~0#1|) .cse1 .cse2 .cse3) (and .cse0 (= 7 |ULTIMATE.start_main_~c~0#1|) (= 7 |ULTIMATE.start_main_~y~0#1|) .cse1 (< 6 |ULTIMATE.start_main_~k~0#1|) .cse3) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) .cse0 (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) .cse1 (= |ULTIMATE.start_main_~x~0#1| 0)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 8) (= |ULTIMATE.start_main_~y~0#1| 8) (< 7 |ULTIMATE.start_main_~k~0#1|) .cse3) (and .cse0 (= 6 |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 .cse3 (= 6 |ULTIMATE.start_main_~c~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 4) .cse1 .cse2 (= |ULTIMATE.start_main_~c~0#1| 4) .cse3) (and .cse0 (= 3 |ULTIMATE.start_main_~y~0#1|) .cse1 (< 2 |ULTIMATE.start_main_~k~0#1|) (= 3 |ULTIMATE.start_main_~c~0#1|) .cse3) (and .cse0 (= 9 |ULTIMATE.start_main_~c~0#1|) .cse1 (< 8 |ULTIMATE.start_main_~k~0#1|) (= 9 |ULTIMATE.start_main_~y~0#1|) .cse3) (and .cse0 (<= 10 |ULTIMATE.start_main_~c~0#1|) (< 9 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 10) .cse1 (= |ULTIMATE.start_main_~y~0#1| 10) .cse3)))) [2022-11-18 21:11:02,792 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2022-11-18 21:11:02,792 INFO L902 garLoopResultBuilder]: At program point L39(lines 17 40) the Hoare annotation is: true [2022-11-18 21:11:02,792 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-11-18 21:11:02,792 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~x~0#1| 4)) [2022-11-18 21:11:02,792 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-11-18 21:11:02,792 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2022-11-18 21:11:02,792 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2022-11-18 21:11:02,793 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2022-11-18 21:11:02,793 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2022-11-18 21:11:02,793 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-11-18 21:11:02,797 INFO L444 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2022-11-18 21:11:02,800 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 21:11:02,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:11:02 BoogieIcfgContainer [2022-11-18 21:11:02,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 21:11:02,852 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 21:11:02,852 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 21:11:02,852 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 21:11:02,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:07:07" (3/4) ... [2022-11-18 21:11:02,859 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 21:11:02,870 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-18 21:11:02,875 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-18 21:11:02,876 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-18 21:11:02,876 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 21:11:02,876 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 21:11:02,912 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 21:11:02,912 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 21:11:02,913 INFO L158 Benchmark]: Toolchain (without parser) took 236673.74ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 86.8MB in the beginning and 53.4MB in the end (delta: 33.4MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. [2022-11-18 21:11:02,914 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 123.7MB. Free memory is still 102.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 21:11:02,914 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.45ms. Allocated memory is still 123.7MB. Free memory was 86.6MB in the beginning and 99.2MB in the end (delta: -12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 21:11:02,914 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.16ms. Allocated memory is still 123.7MB. Free memory was 99.2MB in the beginning and 97.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 21:11:02,915 INFO L158 Benchmark]: Boogie Preprocessor took 55.57ms. Allocated memory is still 123.7MB. Free memory was 97.5MB in the beginning and 96.7MB in the end (delta: 835.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 21:11:02,915 INFO L158 Benchmark]: RCFGBuilder took 349.28ms. Allocated memory is still 123.7MB. Free memory was 96.7MB in the beginning and 86.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 21:11:02,916 INFO L158 Benchmark]: TraceAbstraction took 235790.49ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 85.8MB in the beginning and 55.5MB in the end (delta: 30.3MB). Peak memory consumption was 71.1MB. Max. memory is 16.1GB. [2022-11-18 21:11:02,916 INFO L158 Benchmark]: Witness Printer took 60.80ms. Allocated memory is still 148.9MB. Free memory was 55.5MB in the beginning and 53.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 21:11:02,918 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 123.7MB. Free memory is still 102.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.45ms. Allocated memory is still 123.7MB. Free memory was 86.6MB in the beginning and 99.2MB in the end (delta: -12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.16ms. Allocated memory is still 123.7MB. Free memory was 99.2MB in the beginning and 97.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.57ms. Allocated memory is still 123.7MB. Free memory was 97.5MB in the beginning and 96.7MB in the end (delta: 835.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 349.28ms. Allocated memory is still 123.7MB. Free memory was 96.7MB in the beginning and 86.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 235790.49ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 85.8MB in the beginning and 55.5MB in the end (delta: 30.3MB). Peak memory consumption was 71.1MB. Max. memory is 16.1GB. * Witness Printer took 60.80ms. Allocated memory is still 148.9MB. Free memory was 55.5MB in the beginning and 53.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 235.6s, OverallIterations: 11, TraceHistogramMax: 13, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 139 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 1367 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1121 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2602 IncrementalHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 246 mSDtfsCounter, 2602 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 716 GetRequests, 513 SyntacticMatches, 1 SemanticMatches, 202 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 50.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=10, InterpolantAutomatonStates: 133, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 33 PreInvPairs, 68 NumberOfFragments, 989 HoareAnnotationTreeSize, 33 FomulaSimplifications, 189 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 1253 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 223.8s InterpolantComputationTime, 520 NumberOfCodeBlocks, 518 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 550 ConstructedInterpolants, 0 QuantifiedInterpolants, 2486 SizeOfPredicates, 33 NumberOfNonLiveVariables, 1463 ConjunctsInSsa, 320 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 1264/1856 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: 27]: Loop Invariant Derived loop invariant: ((((((((((((((cond == 1 && 2 == y) && k <= 10) && (k * y == y * y || c < k)) && 2 == c) && y * y * y * 2 + y * y * y * y + y * y == x * 4) || (((((cond == 1 && c == 1) && y == 1) && k <= 10) && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4)) || (((((cond == 1 && 5 == y) && 5 == c) && k <= 10) && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4)) || (((((cond == 1 && 7 == c) && 7 == y) && k <= 10) && 6 < k) && y * y * y * 2 + y * y * y * y + y * y == x * 4)) || (((((0 <= k && cond == 1) && c == 0) && y == 0) && k <= 10) && x == 0)) || (((((cond == 1 && k <= 10) && c == 8) && y == 8) && 7 < k) && y * y * y * 2 + y * y * y * y + y * y == x * 4)) || (((((cond == 1 && 6 == y) && k <= 10) && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && 6 == c)) || (((((cond == 1 && y == 4) && k <= 10) && (k * y == y * y || c < k)) && c == 4) && y * y * y * 2 + y * y * y * y + y * y == x * 4)) || (((((cond == 1 && 3 == y) && k <= 10) && 2 < k) && 3 == c) && y * y * y * 2 + y * y * y * y + y * y == x * 4)) || (((((cond == 1 && 9 == c) && k <= 10) && 8 < k) && 9 == y) && y * y * y * 2 + y * y * y * y + y * y == x * 4)) || ((((((cond == 1 && 10 <= c) && 9 < k) && c <= 10) && k <= 10) && y == 10) && y * y * y * 2 + y * y * y * y + y * y == x * 4) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-18 21:11:02,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a5fc12-ac55-4268-beb8-2e192b2808e2/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