./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s12if.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_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/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_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s12if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/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_1445edae-39ca-45d9-8c78-1b123f7572f5/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 82bfc5dbe63d3250f02def4ff730c5e861bce4a7ef8a101c197bc29dbc0e3123 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:50:30,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:50:30,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:50:30,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:50:30,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:50:30,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:50:30,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:50:30,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:50:30,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:50:30,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:50:30,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:50:30,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:50:30,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:50:30,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:50:30,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:50:30,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:50:30,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:50:30,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:50:30,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:50:30,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:50:30,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:50:30,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:50:30,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:50:30,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:50:30,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:50:30,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:50:30,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:50:30,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:50:30,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:50:30,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:50:30,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:50:30,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:50:30,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:50:30,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:50:30,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:50:30,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:50:30,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:50:30,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:50:30,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:50:30,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:50:30,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:50:30,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:50:30,693 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:50:30,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:50:30,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:50:30,694 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:50:30,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:50:30,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:50:30,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:50:30,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:50:30,696 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:50:30,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:50:30,697 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:50:30,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:50:30,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:50:30,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:50:30,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:50:30,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:50:30,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:50:30,698 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:50:30,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:50:30,699 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:50:30,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:50:30,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:50:30,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:50:30,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:50:30,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:50:30,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:50:30,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:50:30,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:50:30,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:50:30,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:50:30,702 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:50:30,702 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:50:30,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:50:30,703 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_1445edae-39ca-45d9-8c78-1b123f7572f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82bfc5dbe63d3250f02def4ff730c5e861bce4a7ef8a101c197bc29dbc0e3123 [2022-11-18 19:50:30,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:50:30,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:50:30,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:50:30,999 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:50:31,000 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:50:31,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-fpi/s12if.c [2022-11-18 19:50:31,081 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/data/ebc916273/7e8df4db3ee644f3aea9412276fab929/FLAG3488d2a52 [2022-11-18 19:50:31,476 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:50:31,477 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/sv-benchmarks/c/array-fpi/s12if.c [2022-11-18 19:50:31,483 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/data/ebc916273/7e8df4db3ee644f3aea9412276fab929/FLAG3488d2a52 [2022-11-18 19:50:31,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/data/ebc916273/7e8df4db3ee644f3aea9412276fab929 [2022-11-18 19:50:31,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:50:31,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:50:31,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:50:31,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:50:31,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:50:31,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:50:31" (1/1) ... [2022-11-18 19:50:31,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9400b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:31, skipping insertion in model container [2022-11-18 19:50:31,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:50:31" (1/1) ... [2022-11-18 19:50:31,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:50:31,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:50:32,135 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_1445edae-39ca-45d9-8c78-1b123f7572f5/sv-benchmarks/c/array-fpi/s12if.c[588,601] [2022-11-18 19:50:32,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:50:32,200 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:50:32,221 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_1445edae-39ca-45d9-8c78-1b123f7572f5/sv-benchmarks/c/array-fpi/s12if.c[588,601] [2022-11-18 19:50:32,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:50:32,256 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:50:32,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:32 WrapperNode [2022-11-18 19:50:32,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:50:32,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:50:32,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:50:32,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:50:32,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:32" (1/1) ... [2022-11-18 19:50:32,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:32" (1/1) ... [2022-11-18 19:50:32,317 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2022-11-18 19:50:32,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:50:32,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:50:32,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:50:32,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:50:32,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:32" (1/1) ... [2022-11-18 19:50:32,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:32" (1/1) ... [2022-11-18 19:50:32,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:32" (1/1) ... [2022-11-18 19:50:32,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:32" (1/1) ... [2022-11-18 19:50:32,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:32" (1/1) ... [2022-11-18 19:50:32,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:32" (1/1) ... [2022-11-18 19:50:32,362 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:32" (1/1) ... [2022-11-18 19:50:32,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:32" (1/1) ... [2022-11-18 19:50:32,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:50:32,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:50:32,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:50:32,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:50:32,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:32" (1/1) ... [2022-11-18 19:50:32,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:50:32,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:32,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:50:32,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:50:32,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:50:32,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:50:32,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:50:32,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:50:32,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:50:32,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:50:32,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:50:32,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:50:32,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:50:32,537 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:50:32,539 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:50:32,710 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:50:32,717 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:50:32,718 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 19:50:32,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:50:32 BoogieIcfgContainer [2022-11-18 19:50:32,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:50:32,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:50:32,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:50:32,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:50:32,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:50:31" (1/3) ... [2022-11-18 19:50:32,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65961b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:50:32, skipping insertion in model container [2022-11-18 19:50:32,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:32" (2/3) ... [2022-11-18 19:50:32,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65961b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:50:32, skipping insertion in model container [2022-11-18 19:50:32,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:50:32" (3/3) ... [2022-11-18 19:50:32,731 INFO L112 eAbstractionObserver]: Analyzing ICFG s12if.c [2022-11-18 19:50:32,754 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:50:32,755 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:50:32,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:50:32,837 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;@4400611a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:50:32,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:50:32,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 19:50:32,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:50:32,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:32,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:32,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:32,885 INFO L85 PathProgramCache]: Analyzing trace with hash -845308063, now seen corresponding path program 1 times [2022-11-18 19:50:32,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:32,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645559367] [2022-11-18 19:50:32,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:32,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:33,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:33,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645559367] [2022-11-18 19:50:33,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645559367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:33,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:33,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:50:33,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109849] [2022-11-18 19:50:33,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:33,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:50:33,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:33,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:50:33,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:50:33,298 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 19:50:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:33,321 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2022-11-18 19:50:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:50:33,325 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) Word has length 13 [2022-11-18 19:50:33,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:33,335 INFO L225 Difference]: With dead ends: 42 [2022-11-18 19:50:33,335 INFO L226 Difference]: Without dead ends: 19 [2022-11-18 19:50:33,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:50:33,344 INFO L413 NwaCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:33,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:50:33,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-18 19:50:33,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-18 19:50:33,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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 19:50:33,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-18 19:50:33,387 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2022-11-18 19:50:33,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:33,387 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-18 19:50:33,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 19:50:33,388 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-18 19:50:33,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:50:33,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:33,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:33,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:50:33,390 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:33,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:33,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1238662774, now seen corresponding path program 1 times [2022-11-18 19:50:33,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:33,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61352799] [2022-11-18 19:50:33,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:33,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:33,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:33,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61352799] [2022-11-18 19:50:33,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61352799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:33,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:33,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:50:33,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770734149] [2022-11-18 19:50:33,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:33,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:50:33,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:33,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:50:33,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:50:33,670 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 19:50:33,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:33,767 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2022-11-18 19:50:33,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:50:33,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) Word has length 13 [2022-11-18 19:50:33,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:33,769 INFO L225 Difference]: With dead ends: 39 [2022-11-18 19:50:33,769 INFO L226 Difference]: Without dead ends: 27 [2022-11-18 19:50:33,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:50:33,772 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:33,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 11 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:50:33,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-18 19:50:33,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-11-18 19:50:33,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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 19:50:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-18 19:50:33,781 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2022-11-18 19:50:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:33,781 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-18 19:50:33,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 19:50:33,782 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-18 19:50:33,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 19:50:33,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:33,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:33,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:50:33,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:33,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:33,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1944018757, now seen corresponding path program 1 times [2022-11-18 19:50:33,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:33,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692582715] [2022-11-18 19:50:33,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:33,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:34,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:34,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692582715] [2022-11-18 19:50:34,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692582715] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:34,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89473351] [2022-11-18 19:50:34,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:34,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:34,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:34,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:34,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:50:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:34,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 19:50:34,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:35,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:50:35,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:50:35,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:50:35,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:50:35,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 19:50:35,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 23 [2022-11-18 19:50:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:35,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:36,047 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_45 (Array Int Int))) (let ((.cse0 (select v_ArrVal_45 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (or (not (= 2 .cse0)) (= (* c_~N~0 2) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_45) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) .cse0))))) is different from false [2022-11-18 19:50:36,317 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:50:36,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-18 19:50:36,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:50:36,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-11-18 19:50:36,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-18 19:50:36,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 19:50:36,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89473351] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:36,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:36,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 23 [2022-11-18 19:50:36,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137775509] [2022-11-18 19:50:36,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:36,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:50:36,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:36,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:50:36,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=357, Unknown=1, NotChecked=40, Total=506 [2022-11-18 19:50:36,417 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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 19:50:43,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:43,622 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2022-11-18 19:50:43,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:50:43,623 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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) Word has length 21 [2022-11-18 19:50:43,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:43,626 INFO L225 Difference]: With dead ends: 53 [2022-11-18 19:50:43,626 INFO L226 Difference]: Without dead ends: 47 [2022-11-18 19:50:43,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=249, Invalid=810, Unknown=1, NotChecked=62, Total=1122 [2022-11-18 19:50:43,629 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 56 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:43,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 83 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 151 Invalid, 0 Unknown, 114 Unchecked, 0.4s Time] [2022-11-18 19:50:43,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-18 19:50:43,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2022-11-18 19:50:43,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 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 19:50:43,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2022-11-18 19:50:43,642 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 21 [2022-11-18 19:50:43,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:43,642 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2022-11-18 19:50:43,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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 19:50:43,643 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2022-11-18 19:50:43,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 19:50:43,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:43,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:43,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:43,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-18 19:50:43,852 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:43,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:43,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2001277059, now seen corresponding path program 1 times [2022-11-18 19:50:43,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:43,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487003484] [2022-11-18 19:50:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:43,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:43,873 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:50:43,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061060682] [2022-11-18 19:50:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:43,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:43,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:43,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:43,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:50:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:43,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:50:43,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:44,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-18 19:50:44,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:50:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:44,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:44,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2022-11-18 19:50:44,398 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-18 19:50:44,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 24 [2022-11-18 19:50:44,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:44,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:44,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487003484] [2022-11-18 19:50:44,439 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:50:44,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061060682] [2022-11-18 19:50:44,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061060682] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:44,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:50:44,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-18 19:50:44,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179669306] [2022-11-18 19:50:44,440 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:44,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:50:44,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:44,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:50:44,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:50:44,442 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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 19:50:44,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:44,996 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2022-11-18 19:50:44,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:50:44,998 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) Word has length 21 [2022-11-18 19:50:44,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:44,999 INFO L225 Difference]: With dead ends: 64 [2022-11-18 19:50:44,999 INFO L226 Difference]: Without dead ends: 52 [2022-11-18 19:50:45,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:50:45,001 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 47 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:45,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 58 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:50:45,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-18 19:50:45,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2022-11-18 19:50:45,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.263157894736842) internal successors, (48), 38 states have internal predecessors, (48), 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 19:50:45,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2022-11-18 19:50:45,028 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 21 [2022-11-18 19:50:45,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:45,029 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2022-11-18 19:50:45,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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 19:50:45,030 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2022-11-18 19:50:45,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 19:50:45,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:45,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:45,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:45,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:45,244 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:45,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:45,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1649883961, now seen corresponding path program 1 times [2022-11-18 19:50:45,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:45,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345568428] [2022-11-18 19:50:45,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:45,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:46,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:46,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345568428] [2022-11-18 19:50:46,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345568428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:46,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274337343] [2022-11-18 19:50:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:46,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:46,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:46,083 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:46,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:50:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:46,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:50:46,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:46,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:50:46,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:50:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:46,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:46,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-18 19:50:46,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 19:50:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:46,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274337343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:46,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:46,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 17 [2022-11-18 19:50:46,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397087730] [2022-11-18 19:50:46,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:46,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:50:46,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:46,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:50:46,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:50:46,577 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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 19:50:48,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:48,435 INFO L93 Difference]: Finished difference Result 79 states and 100 transitions. [2022-11-18 19:50:48,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:50:48,435 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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) Word has length 21 [2022-11-18 19:50:48,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:48,437 INFO L225 Difference]: With dead ends: 79 [2022-11-18 19:50:48,437 INFO L226 Difference]: Without dead ends: 65 [2022-11-18 19:50:48,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=262, Invalid=998, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:50:48,441 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 86 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:48,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 75 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:50:48,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-18 19:50:48,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2022-11-18 19:50:48,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 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 19:50:48,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2022-11-18 19:50:48,455 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 21 [2022-11-18 19:50:48,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:48,455 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2022-11-18 19:50:48,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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 19:50:48,456 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2022-11-18 19:50:48,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:50:48,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:48,457 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:48,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:48,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:48,663 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:48,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:48,664 INFO L85 PathProgramCache]: Analyzing trace with hash -823792505, now seen corresponding path program 2 times [2022-11-18 19:50:48,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:48,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141078005] [2022-11-18 19:50:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:48,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:48,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:48,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141078005] [2022-11-18 19:50:48,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141078005] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:48,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843556399] [2022-11-18 19:50:48,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:50:48,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:48,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:48,855 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:48,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:50:48,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:50:48,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:48,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:50:48,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:49,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:49,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843556399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:49,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:49,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 19:50:49,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640246937] [2022-11-18 19:50:49,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:49,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:50:49,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:49,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:50:49,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:50:49,271 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 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 19:50:49,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:49,819 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-11-18 19:50:49,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:50:49,820 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 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) Word has length 23 [2022-11-18 19:50:49,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:49,821 INFO L225 Difference]: With dead ends: 85 [2022-11-18 19:50:49,821 INFO L226 Difference]: Without dead ends: 75 [2022-11-18 19:50:49,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:50:49,822 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 49 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:49,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 31 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:50:49,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-18 19:50:49,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 53. [2022-11-18 19:50:49,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 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 19:50:49,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2022-11-18 19:50:49,851 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 23 [2022-11-18 19:50:49,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:49,852 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2022-11-18 19:50:49,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 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 19:50:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2022-11-18 19:50:49,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 19:50:49,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:49,856 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:49,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:50,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 19:50:50,061 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:50,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:50,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1832157868, now seen corresponding path program 3 times [2022-11-18 19:50:50,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:50,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461029850] [2022-11-18 19:50:50,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:50,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:50,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:50,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461029850] [2022-11-18 19:50:50,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461029850] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:50,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543211396] [2022-11-18 19:50:50,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:50:50,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:50,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:50,211 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:50,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:50:50,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:50:50,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:50,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:50:50,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:50,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:50:50,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543211396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:50,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:50,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 19:50:50,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917348760] [2022-11-18 19:50:50,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:50,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:50:50,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:50,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:50:50,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:50:50,616 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 19:50:50,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:50,925 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2022-11-18 19:50:50,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:50:50,925 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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) Word has length 24 [2022-11-18 19:50:50,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:50,926 INFO L225 Difference]: With dead ends: 78 [2022-11-18 19:50:50,926 INFO L226 Difference]: Without dead ends: 42 [2022-11-18 19:50:50,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:50:50,928 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 53 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:50,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 24 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:50:50,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-18 19:50:50,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2022-11-18 19:50:50,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 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 19:50:50,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2022-11-18 19:50:50,938 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 24 [2022-11-18 19:50:50,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:50,938 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2022-11-18 19:50:50,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 19:50:50,939 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-11-18 19:50:50,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:50:50,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:50,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:50,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:51,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:51,146 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:51,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash -14433298, now seen corresponding path program 4 times [2022-11-18 19:50:51,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:51,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65197825] [2022-11-18 19:50:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:51,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:50:52,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:52,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65197825] [2022-11-18 19:50:52,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65197825] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:52,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599808061] [2022-11-18 19:50:52,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:50:52,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:52,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:52,929 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:52,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:50:53,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:50:53,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:53,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 19:50:53,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:53,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:50:53,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:50:53,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:50:53,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:50:53,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:50:53,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:50:53,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 19:50:54,236 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:50:54,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2022-11-18 19:50:54,476 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:50:54,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 32 [2022-11-18 19:50:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:54,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:55,279 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_208 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_64| Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_208))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse1 (select v_ArrVal_208 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_64| 4))))) (or (= (+ .cse0 .cse1 .cse2) (* c_~N~0 2)) (not (= 2 .cse1)) (not (= 2 .cse2)))))))) is different from false [2022-11-18 19:50:55,319 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_208 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_64| Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_208))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse1 (select v_ArrVal_208 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_64| 4))))) (or (= (+ .cse0 .cse1 .cse2) (* c_~N~0 2)) (not (= 2 .cse1)) (not (= 2 .cse2)))))))) (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0))) is different from false [2022-11-18 19:50:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-18 19:50:56,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599808061] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:56,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:50:56,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 38 [2022-11-18 19:50:56,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882585375] [2022-11-18 19:50:56,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:56,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 19:50:56,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:56,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 19:50:56,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1126, Unknown=5, NotChecked=138, Total=1406 [2022-11-18 19:50:56,908 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 38 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 38 states have internal predecessors, (73), 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 19:50:58,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:58,551 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2022-11-18 19:50:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:50:58,552 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 38 states have internal predecessors, (73), 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) Word has length 29 [2022-11-18 19:50:58,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:58,553 INFO L225 Difference]: With dead ends: 73 [2022-11-18 19:50:58,553 INFO L226 Difference]: Without dead ends: 69 [2022-11-18 19:50:58,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=222, Invalid=1673, Unknown=5, NotChecked=170, Total=2070 [2022-11-18 19:50:58,555 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 35 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 325 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:58,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 126 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 286 Invalid, 0 Unknown, 325 Unchecked, 0.7s Time] [2022-11-18 19:50:58,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-18 19:50:58,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2022-11-18 19:50:58,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 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 19:50:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2022-11-18 19:50:58,584 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 29 [2022-11-18 19:50:58,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:58,589 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2022-11-18 19:50:58,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 38 states have internal predecessors, (73), 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 19:50:58,589 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2022-11-18 19:50:58,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:50:58,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:58,594 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:58,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:58,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:58,799 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:58,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:58,800 INFO L85 PathProgramCache]: Analyzing trace with hash 42825004, now seen corresponding path program 1 times [2022-11-18 19:50:58,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:58,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752358507] [2022-11-18 19:50:58,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:58,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:58,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:50:58,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487201814] [2022-11-18 19:50:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:58,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:58,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:58,816 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:58,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:50:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:58,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:50:58,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:59,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-18 19:50:59,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:50:59,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:50:59,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:50:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:50:59,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:59,724 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_253 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_253) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) is different from false [2022-11-18 19:50:59,827 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:50:59,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 31 [2022-11-18 19:50:59,845 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:50:59,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2022-11-18 19:50:59,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 19:51:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 3 not checked. [2022-11-18 19:51:00,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:00,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752358507] [2022-11-18 19:51:00,036 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:00,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487201814] [2022-11-18 19:51:00,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487201814] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:00,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:00,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-18 19:51:00,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074523956] [2022-11-18 19:51:00,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:00,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:51:00,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:00,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:51:00,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=4, NotChecked=32, Total=342 [2022-11-18 19:51:00,039 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 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 19:51:00,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:00,563 INFO L93 Difference]: Finished difference Result 90 states and 114 transitions. [2022-11-18 19:51:00,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:51:00,563 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 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) Word has length 29 [2022-11-18 19:51:00,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:00,564 INFO L225 Difference]: With dead ends: 90 [2022-11-18 19:51:00,564 INFO L226 Difference]: Without dead ends: 83 [2022-11-18 19:51:00,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=4, NotChecked=38, Total=462 [2022-11-18 19:51:00,566 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:00,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 73 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 56 Unchecked, 0.3s Time] [2022-11-18 19:51:00,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-18 19:51:00,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2022-11-18 19:51:00,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.275) internal successors, (102), 80 states have internal predecessors, (102), 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 19:51:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2022-11-18 19:51:00,586 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 29 [2022-11-18 19:51:00,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:00,586 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2022-11-18 19:51:00,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 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 19:51:00,586 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2022-11-18 19:51:00,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:51:00,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:00,587 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:00,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:00,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:00,793 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:00,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:00,794 INFO L85 PathProgramCache]: Analyzing trace with hash -968292246, now seen corresponding path program 1 times [2022-11-18 19:51:00,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:00,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248394290] [2022-11-18 19:51:00,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:00,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:00,806 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:00,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438727740] [2022-11-18 19:51:00,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:00,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:00,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:00,808 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:00,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:51:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:00,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:51:00,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:00,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:51:01,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:01,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:51:01,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:51:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:51:01,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:01,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-18 19:51:01,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-18 19:51:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:51:01,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:01,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248394290] [2022-11-18 19:51:01,417 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:01,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438727740] [2022-11-18 19:51:01,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438727740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:01,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:01,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-18 19:51:01,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758513549] [2022-11-18 19:51:01,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:01,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:51:01,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:01,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:51:01,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:51:01,420 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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 19:51:01,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:01,945 INFO L93 Difference]: Finished difference Result 123 states and 158 transitions. [2022-11-18 19:51:01,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:51:01,946 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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) Word has length 29 [2022-11-18 19:51:01,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:01,947 INFO L225 Difference]: With dead ends: 123 [2022-11-18 19:51:01,947 INFO L226 Difference]: Without dead ends: 92 [2022-11-18 19:51:01,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:51:01,949 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:01,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 64 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:51:01,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-18 19:51:01,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 81. [2022-11-18 19:51:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.25) internal successors, (100), 80 states have internal predecessors, (100), 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 19:51:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2022-11-18 19:51:01,972 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 29 [2022-11-18 19:51:01,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:01,972 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2022-11-18 19:51:01,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 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 19:51:01,973 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2022-11-18 19:51:01,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 19:51:01,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:01,974 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:01,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:02,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:51:02,180 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:02,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:02,181 INFO L85 PathProgramCache]: Analyzing trace with hash -554569936, now seen corresponding path program 5 times [2022-11-18 19:51:02,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:02,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423144876] [2022-11-18 19:51:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:02,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:51:02,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:02,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423144876] [2022-11-18 19:51:02,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423144876] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:02,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115789359] [2022-11-18 19:51:02,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:51:02,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:02,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:02,417 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:02,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:51:02,526 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 19:51:02,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:02,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:51:02,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:51:02,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:51:02,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115789359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:02,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:02,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-18 19:51:02,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993012551] [2022-11-18 19:51:02,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:02,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:51:02,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:02,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:51:02,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:51:02,910 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 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 19:51:03,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:03,785 INFO L93 Difference]: Finished difference Result 115 states and 145 transitions. [2022-11-18 19:51:03,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:51:03,786 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 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) Word has length 31 [2022-11-18 19:51:03,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:03,786 INFO L225 Difference]: With dead ends: 115 [2022-11-18 19:51:03,787 INFO L226 Difference]: Without dead ends: 102 [2022-11-18 19:51:03,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:51:03,788 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 72 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:03,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 34 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:51:03,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-18 19:51:03,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 80. [2022-11-18 19:51:03,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 79 states have internal predecessors, (100), 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 19:51:03,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2022-11-18 19:51:03,810 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 31 [2022-11-18 19:51:03,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:03,811 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2022-11-18 19:51:03,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 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 19:51:03,812 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2022-11-18 19:51:03,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 19:51:03,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:03,813 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:03,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:04,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 19:51:04,020 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:04,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:04,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1053387787, now seen corresponding path program 6 times [2022-11-18 19:51:04,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:04,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43764624] [2022-11-18 19:51:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:04,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:51:04,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:04,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43764624] [2022-11-18 19:51:04,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43764624] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:04,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766282980] [2022-11-18 19:51:04,304 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:51:04,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:04,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:04,305 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:04,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:51:04,432 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 19:51:04,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:04,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:51:04,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:51:04,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:51:04,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766282980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:04,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:04,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-18 19:51:04,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339526607] [2022-11-18 19:51:04,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:04,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:51:04,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:04,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:51:04,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:51:04,927 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 19:51:05,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:05,435 INFO L93 Difference]: Finished difference Result 103 states and 127 transitions. [2022-11-18 19:51:05,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:51:05,436 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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) Word has length 32 [2022-11-18 19:51:05,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:05,437 INFO L225 Difference]: With dead ends: 103 [2022-11-18 19:51:05,437 INFO L226 Difference]: Without dead ends: 50 [2022-11-18 19:51:05,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:51:05,438 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 51 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:05,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 42 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:51:05,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-18 19:51:05,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2022-11-18 19:51:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 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 19:51:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2022-11-18 19:51:05,450 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 32 [2022-11-18 19:51:05,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:05,451 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2022-11-18 19:51:05,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 19:51:05,451 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2022-11-18 19:51:05,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 19:51:05,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:05,452 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:05,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:05,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:51:05,659 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:05,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:05,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1383779305, now seen corresponding path program 7 times [2022-11-18 19:51:05,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:05,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666060968] [2022-11-18 19:51:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:05,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:07,944 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:51:07,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:07,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666060968] [2022-11-18 19:51:07,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666060968] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:07,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501728147] [2022-11-18 19:51:07,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:51:07,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:07,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:07,951 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:07,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:51:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:08,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-18 19:51:08,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:08,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:51:08,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:51:08,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:51:08,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:51:08,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:51:08,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:51:08,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:51:09,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:51:09,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 19:51:09,566 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:51:09,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2022-11-18 19:51:09,933 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:51:09,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 19:51:10,177 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:51:10,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 28 [2022-11-18 19:51:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:51:10,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:11,928 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_438 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_131| Int) (|v_ULTIMATE.start_main_~i~0#1_129| Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_438))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select v_ArrVal_438 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (.cse3 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse1 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_131| 4))))) (let ((.cse2 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_129| 4))))) (or (not (= .cse0 2)) (not (= .cse1 2)) (not (= .cse2 2)) (= (+ .cse0 .cse2 .cse1 .cse3) (* c_~N~0 2))))))))) is different from false [2022-11-18 19:51:13,642 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 19:51:13,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 407 treesize of output 1 [2022-11-18 19:51:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 5 not checked. [2022-11-18 19:51:13,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501728147] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:13,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:13,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 16] total 46 [2022-11-18 19:51:13,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475306353] [2022-11-18 19:51:13,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:13,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 19:51:13,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:13,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 19:51:13,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1782, Unknown=2, NotChecked=86, Total=2070 [2022-11-18 19:51:13,649 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 46 states, 46 states have (on average 1.826086956521739) internal successors, (84), 46 states have internal predecessors, (84), 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 19:51:27,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:27,808 INFO L93 Difference]: Finished difference Result 104 states and 131 transitions. [2022-11-18 19:51:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 19:51:27,809 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.826086956521739) internal successors, (84), 46 states have internal predecessors, (84), 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) Word has length 37 [2022-11-18 19:51:27,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:27,810 INFO L225 Difference]: With dead ends: 104 [2022-11-18 19:51:27,810 INFO L226 Difference]: Without dead ends: 100 [2022-11-18 19:51:27,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=654, Invalid=4040, Unknown=2, NotChecked=134, Total=4830 [2022-11-18 19:51:27,812 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 108 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 425 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:27,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 92 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 340 Invalid, 0 Unknown, 425 Unchecked, 0.8s Time] [2022-11-18 19:51:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-18 19:51:27,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 87. [2022-11-18 19:51:27,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 86 states have internal predecessors, (109), 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 19:51:27,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2022-11-18 19:51:27,834 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 37 [2022-11-18 19:51:27,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:27,834 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2022-11-18 19:51:27,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.826086956521739) internal successors, (84), 46 states have internal predecessors, (84), 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 19:51:27,835 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2022-11-18 19:51:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 19:51:27,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:27,836 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:27,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:28,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:51:28,041 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:28,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:28,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1441037607, now seen corresponding path program 2 times [2022-11-18 19:51:28,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:28,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441427886] [2022-11-18 19:51:28,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:28,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:28,057 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:28,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482836015] [2022-11-18 19:51:28,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:51:28,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:28,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:28,059 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:28,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:51:28,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:51:28,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:28,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 19:51:28,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:28,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-18 19:51:28,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:28,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:51:28,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:28,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:51:28,983 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:51:28,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2022-11-18 19:51:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:29,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:38,075 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:51:38,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 33 [2022-11-18 19:51:38,096 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:51:38,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 38 [2022-11-18 19:51:38,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-18 19:51:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:38,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:38,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441427886] [2022-11-18 19:51:38,922 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:38,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482836015] [2022-11-18 19:51:38,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482836015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:38,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:38,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-11-18 19:51:38,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320111834] [2022-11-18 19:51:38,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:38,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:51:38,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:38,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:51:38,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=915, Unknown=6, NotChecked=0, Total=1122 [2022-11-18 19:51:38,925 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 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 19:51:40,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:40,222 INFO L93 Difference]: Finished difference Result 143 states and 181 transitions. [2022-11-18 19:51:40,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:51:40,224 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 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) Word has length 37 [2022-11-18 19:51:40,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:40,225 INFO L225 Difference]: With dead ends: 143 [2022-11-18 19:51:40,225 INFO L226 Difference]: Without dead ends: 136 [2022-11-18 19:51:40,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=386, Invalid=1500, Unknown=6, NotChecked=0, Total=1892 [2022-11-18 19:51:40,226 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 360 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:40,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 48 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 312 Invalid, 0 Unknown, 173 Unchecked, 0.6s Time] [2022-11-18 19:51:40,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-18 19:51:40,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2022-11-18 19:51:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.2636363636363637) internal successors, (139), 110 states have internal predecessors, (139), 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 19:51:40,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 139 transitions. [2022-11-18 19:51:40,254 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 139 transitions. Word has length 37 [2022-11-18 19:51:40,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:40,254 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 139 transitions. [2022-11-18 19:51:40,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 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 19:51:40,255 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 139 transitions. [2022-11-18 19:51:40,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 19:51:40,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:40,256 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:40,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:40,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:51:40,461 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:40,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:40,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2063837675, now seen corresponding path program 3 times [2022-11-18 19:51:40,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:40,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466742480] [2022-11-18 19:51:40,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:40,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:40,478 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:40,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439224683] [2022-11-18 19:51:40,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:51:40,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:40,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:40,480 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:40,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:51:40,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:51:40,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:40,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 19:51:40,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:40,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2022-11-18 19:51:40,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-18 19:51:41,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:41,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-18 19:51:41,116 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:51:41,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-11-18 19:51:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 19:51:41,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:44,786 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:51:44,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 46 [2022-11-18 19:51:44,806 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-11-18 19:51:44,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2022-11-18 19:51:48,906 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 20 refuted. 2 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 19:51:48,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:48,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466742480] [2022-11-18 19:51:48,907 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:48,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439224683] [2022-11-18 19:51:48,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439224683] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:48,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:48,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 24 [2022-11-18 19:51:48,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762812771] [2022-11-18 19:51:48,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:48,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 19:51:48,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:48,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 19:51:48,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=444, Unknown=16, NotChecked=0, Total=552 [2022-11-18 19:51:48,910 INFO L87 Difference]: Start difference. First operand 111 states and 139 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 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 19:51:49,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:49,394 INFO L93 Difference]: Finished difference Result 129 states and 160 transitions. [2022-11-18 19:51:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:51:49,395 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 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) Word has length 37 [2022-11-18 19:51:49,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:49,396 INFO L225 Difference]: With dead ends: 129 [2022-11-18 19:51:49,396 INFO L226 Difference]: Without dead ends: 125 [2022-11-18 19:51:49,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=151, Invalid=645, Unknown=16, NotChecked=0, Total=812 [2022-11-18 19:51:49,397 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:49,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 67 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 106 Unchecked, 0.1s Time] [2022-11-18 19:51:49,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-18 19:51:49,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2022-11-18 19:51:49,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.2672413793103448) internal successors, (147), 116 states have internal predecessors, (147), 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 19:51:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 147 transitions. [2022-11-18 19:51:49,427 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 147 transitions. Word has length 37 [2022-11-18 19:51:49,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:49,428 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 147 transitions. [2022-11-18 19:51:49,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 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 19:51:49,428 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 147 transitions. [2022-11-18 19:51:49,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 19:51:49,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:49,429 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:49,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:49,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:49,635 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:49,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:49,635 INFO L85 PathProgramCache]: Analyzing trace with hash -147310295, now seen corresponding path program 2 times [2022-11-18 19:51:49,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:49,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507652574] [2022-11-18 19:51:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:49,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:49,664 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:51:49,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536194937] [2022-11-18 19:51:49,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:51:49,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:49,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:49,678 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:49,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:51:49,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:51:49,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:49,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:51:49,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:49,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:51:50,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:50,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:51:50,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:51:50,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:51:50,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:51:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:51:50,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:50,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-18 19:51:50,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-18 19:51:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:51:50,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:50,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507652574] [2022-11-18 19:51:50,580 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:51:50,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536194937] [2022-11-18 19:51:50,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536194937] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:50,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:50,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-18 19:51:50,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190091962] [2022-11-18 19:51:50,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:50,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:51:50,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:50,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:51:50,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:51:50,582 INFO L87 Difference]: Start difference. First operand 117 states and 147 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 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 19:51:51,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:51,347 INFO L93 Difference]: Finished difference Result 173 states and 223 transitions. [2022-11-18 19:51:51,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:51:51,348 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 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) Word has length 37 [2022-11-18 19:51:51,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:51,349 INFO L225 Difference]: With dead ends: 173 [2022-11-18 19:51:51,349 INFO L226 Difference]: Without dead ends: 128 [2022-11-18 19:51:51,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:51:51,351 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:51,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 76 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:51:51,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-18 19:51:51,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 117. [2022-11-18 19:51:51,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.25) internal successors, (145), 116 states have internal predecessors, (145), 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 19:51:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 145 transitions. [2022-11-18 19:51:51,383 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 145 transitions. Word has length 37 [2022-11-18 19:51:51,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:51,383 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 145 transitions. [2022-11-18 19:51:51,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 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 19:51:51,384 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 145 transitions. [2022-11-18 19:51:51,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 19:51:51,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:51,385 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:51,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:51,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:51,591 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:51,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1016239403, now seen corresponding path program 8 times [2022-11-18 19:51:51,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:51,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169123585] [2022-11-18 19:51:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:51,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:51:51,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:51,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169123585] [2022-11-18 19:51:51,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169123585] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:51,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846435659] [2022-11-18 19:51:51,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:51:51,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:51,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:51,935 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:51,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:51:52,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:51:52,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:52,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:51:52,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:51:52,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:51:52,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846435659] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:52,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:52,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-18 19:51:52,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282725698] [2022-11-18 19:51:52,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:52,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:51:52,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:52,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:51:52,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:51:52,726 INFO L87 Difference]: Start difference. First operand 117 states and 145 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 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 19:51:54,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:54,080 INFO L93 Difference]: Finished difference Result 159 states and 201 transitions. [2022-11-18 19:51:54,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:51:54,081 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 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) Word has length 39 [2022-11-18 19:51:54,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:54,082 INFO L225 Difference]: With dead ends: 159 [2022-11-18 19:51:54,083 INFO L226 Difference]: Without dead ends: 138 [2022-11-18 19:51:54,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:51:54,084 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 79 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:54,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 43 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:51:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-18 19:51:54,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2022-11-18 19:51:54,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 104 states have internal predecessors, (131), 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 19:51:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 131 transitions. [2022-11-18 19:51:54,113 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 131 transitions. Word has length 39 [2022-11-18 19:51:54,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:54,113 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 131 transitions. [2022-11-18 19:51:54,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 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 19:51:54,113 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 131 transitions. [2022-11-18 19:51:54,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 19:51:54,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:54,114 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:54,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:54,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:51:54,320 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:54,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:54,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1682760144, now seen corresponding path program 9 times [2022-11-18 19:51:54,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:54,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617378749] [2022-11-18 19:51:54,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:54,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:54,636 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:51:54,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:54,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617378749] [2022-11-18 19:51:54,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617378749] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:54,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193447497] [2022-11-18 19:51:54,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:51:54,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:54,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:54,639 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:54,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:51:54,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:51:54,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:54,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:51:54,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:51:55,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:51:55,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193447497] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:55,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:55,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-18 19:51:55,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151058409] [2022-11-18 19:51:55,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:55,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:51:55,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:55,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:51:55,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:51:55,507 INFO L87 Difference]: Start difference. First operand 105 states and 131 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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 19:51:56,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:56,191 INFO L93 Difference]: Finished difference Result 131 states and 162 transitions. [2022-11-18 19:51:56,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:51:56,192 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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) Word has length 40 [2022-11-18 19:51:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:56,194 INFO L225 Difference]: With dead ends: 131 [2022-11-18 19:51:56,194 INFO L226 Difference]: Without dead ends: 58 [2022-11-18 19:51:56,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 66 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:51:56,196 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 92 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:56,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 38 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:51:56,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-18 19:51:56,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2022-11-18 19:51:56,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.196078431372549) internal successors, (61), 51 states have internal predecessors, (61), 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 19:51:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2022-11-18 19:51:56,213 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 40 [2022-11-18 19:51:56,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:56,213 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2022-11-18 19:51:56,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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 19:51:56,214 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2022-11-18 19:51:56,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 19:51:56,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:56,215 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:56,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:51:56,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:51:56,421 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:56,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:56,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2111860654, now seen corresponding path program 10 times [2022-11-18 19:51:56,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:56,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257570595] [2022-11-18 19:51:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:56,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:59,002 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:51:59,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:59,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257570595] [2022-11-18 19:51:59,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257570595] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:59,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518248717] [2022-11-18 19:51:59,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:51:59,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:59,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:59,006 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:59,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 19:51:59,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:51:59,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:59,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-18 19:51:59,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:59,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:51:59,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:51:59,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:51:59,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:51:59,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:51:59,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:51:59,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:51:59,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:51:59,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:51:59,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:00,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 19:52:00,293 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:52:00,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2022-11-18 19:52:00,574 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:52:00,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 19:52:00,877 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:52:00,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 19:52:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:52:01,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:03,457 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_241| Int) (|v_ULTIMATE.start_main_~i~0#1_243| Int) (v_ArrVal_790 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_239| Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_790))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select v_ArrVal_790 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (.cse3 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_243| 4))))) (let ((.cse1 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_241| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse1 .cse3 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_239| 4))))) (or (not (= 2 .cse0)) (not (= .cse1 2)) (not (= .cse2 2)) (= (+ .cse2 .cse1 .cse3 .cse0 .cse4) (* c_~N~0 2)) (not (= 2 .cse4)))))))))) is different from false [2022-11-18 19:52:05,183 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (* 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_790 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_251| Int)) (let ((.cse3 (select v_ArrVal_790 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_251| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_243| Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_790))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse4 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_243| 4))))) (or (not (= 2 .cse0)) (forall ((|v_ULTIMATE.start_main_~i~0#1_241| Int)) (let ((.cse1 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse0 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_241| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= .cse1 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_239| Int)) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse0 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_239| 4))))) (or (not (= .cse2 2)) (< (+ .cse2 .cse1 .cse3 .cse0 .cse4) (+ .cse5 3)))))))))))))) (not (= .cse3 2))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_790 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_251| Int)) (let ((.cse11 (select v_ArrVal_790 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_251| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_243| Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_790))) (let ((.cse14 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse8 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_243| 4))))) (or (not (= 2 .cse8)) (forall ((|v_ULTIMATE.start_main_~i~0#1_241| Int)) (let ((.cse9 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse11 .cse8 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_241| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= .cse9 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_239| Int)) (let ((.cse10 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse9 .cse11 .cse8 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_239| 4))))) (or (not (= .cse10 2)) (< (+ .cse5 1) (+ .cse10 .cse9 .cse11 .cse8 .cse12)))))))))))))) (not (= .cse11 2))))))) is different from false [2022-11-18 19:52:05,355 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (* 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_790 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_251| Int)) (let ((.cse4 (select v_ArrVal_790 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_251| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_243| Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_790))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse5 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_243| 4))))) (or (not (= 2 .cse0)) (forall ((|v_ULTIMATE.start_main_~i~0#1_241| Int)) (let ((.cse1 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_241| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= .cse1 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_239| Int)) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4 .cse0 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_239| 4))))) (or (not (= .cse2 2)) (< (+ .cse3 3) (+ .cse2 .cse1 .cse4 .cse0 .cse5)))))))))))))) (not (= .cse4 2))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_790 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_251| Int)) (let ((.cse10 (select v_ArrVal_790 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_251| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_243| Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_790))) (let ((.cse14 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse11 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_243| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_241| Int)) (let ((.cse9 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_241| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_239| Int)) (let ((.cse8 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse9 .cse10 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_239| 4))))) (or (not (= .cse8 2)) (< (+ .cse8 .cse9 .cse10 .cse11 .cse12) (+ .cse3 5))))) (not (= .cse9 2))))) (not (= 2 .cse11)))))))) (not (= .cse10 2))))))) is different from false [2022-11-18 19:52:05,624 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (* 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_790 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_251| Int)) (let ((.cse4 (select v_ArrVal_790 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_251| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_243| Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_790))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse5 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_243| 4))))) (or (not (= 2 .cse0)) (forall ((|v_ULTIMATE.start_main_~i~0#1_241| Int)) (let ((.cse1 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_241| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= .cse1 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_239| Int)) (let ((.cse3 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4 .cse0 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_239| 4))))) (or (< (+ .cse2 5) (+ .cse3 .cse1 .cse4 .cse0 .cse5)) (not (= .cse3 2)))))))))))))) (not (= .cse4 2))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_790 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_251| Int)) (let ((.cse11 (select v_ArrVal_790 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_251| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_243| Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_790))) (let ((.cse14 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse8 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_243| 4))))) (or (not (= 2 .cse8)) (forall ((|v_ULTIMATE.start_main_~i~0#1_241| Int)) (let ((.cse10 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse11 .cse8 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_241| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_239| Int)) (let ((.cse9 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse11 .cse8 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_239| 4))))) (or (not (= .cse9 2)) (< (+ .cse9 .cse10 .cse11 .cse8 .cse12) (+ .cse2 7))))) (not (= .cse10 2))))))))))) (not (= .cse11 2))))))) is different from false [2022-11-18 19:52:05,845 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (* 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_790 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_251| Int)) (let ((.cse3 (select v_ArrVal_790 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_251| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_243| Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_790))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse5 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_243| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_241| Int)) (let ((.cse0 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_241| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= .cse0 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_239| Int)) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse3 .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_239| 4))))) (or (< (+ .cse1 7) (+ .cse2 .cse0 .cse3 .cse4 .cse5)) (not (= .cse2 2)))))))) (not (= 2 .cse4)))))))) (not (= .cse3 2))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_790 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_251| Int)) (let ((.cse11 (select v_ArrVal_790 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_251| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_243| Int)) (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_790))) (let ((.cse14 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse8 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_243| 4))))) (or (not (= 2 .cse8)) (forall ((|v_ULTIMATE.start_main_~i~0#1_241| Int)) (let ((.cse9 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse11 .cse8 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_241| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= .cse9 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_239| Int)) (let ((.cse10 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse9 .cse11 .cse8 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_239| 4))))) (or (not (= .cse10 2)) (< (+ .cse10 .cse9 .cse11 .cse8 .cse12) (+ .cse1 9)))))))))))))) (not (= .cse11 2))))))) is different from false [2022-11-18 19:52:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 23 not checked. [2022-11-18 19:52:06,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518248717] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:06,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:06,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 19] total 52 [2022-11-18 19:52:06,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340368230] [2022-11-18 19:52:06,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:06,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-18 19:52:06,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:06,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-18 19:52:06,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1990, Unknown=6, NotChecked=470, Total=2652 [2022-11-18 19:52:06,042 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 52 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 52 states have internal predecessors, (95), 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 19:52:28,172 WARN L233 SmtUtils]: Spent 8.22s on a formula simplification. DAG size of input: 65 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:52:29,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:29,033 INFO L93 Difference]: Finished difference Result 87 states and 102 transitions. [2022-11-18 19:52:29,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:52:29,034 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 52 states have internal predecessors, (95), 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) Word has length 45 [2022-11-18 19:52:29,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:29,035 INFO L225 Difference]: With dead ends: 87 [2022-11-18 19:52:29,035 INFO L226 Difference]: Without dead ends: 83 [2022-11-18 19:52:29,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 68 SyntacticMatches, 8 SemanticMatches, 59 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=285, Invalid=2809, Unknown=6, NotChecked=560, Total=3660 [2022-11-18 19:52:29,036 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 384 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:29,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 157 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 330 Invalid, 0 Unknown, 384 Unchecked, 0.6s Time] [2022-11-18 19:52:29,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-18 19:52:29,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2022-11-18 19:52:29,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 79 states have internal predecessors, (95), 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 19:52:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2022-11-18 19:52:29,056 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 45 [2022-11-18 19:52:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:29,056 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2022-11-18 19:52:29,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 52 states have internal predecessors, (95), 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 19:52:29,057 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2022-11-18 19:52:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 19:52:29,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:29,057 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:29,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:29,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:29,258 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:29,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:29,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2054602352, now seen corresponding path program 4 times [2022-11-18 19:52:29,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:29,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156942950] [2022-11-18 19:52:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:29,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:29,285 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:52:29,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192513474] [2022-11-18 19:52:29,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:52:29,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:29,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:29,287 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:29,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 19:52:29,434 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:52:29,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:29,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 19:52:29,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:29,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:52:29,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-18 19:52:29,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:52:30,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:52:30,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:52:30,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 19:52:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 37 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:52:30,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:30,593 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_866 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_866) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2)) is different from false [2022-11-18 19:52:30,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2022-11-18 19:52:30,781 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:52:30,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 40 [2022-11-18 19:52:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 8 not checked. [2022-11-18 19:52:30,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:30,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156942950] [2022-11-18 19:52:30,914 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:52:30,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192513474] [2022-11-18 19:52:30,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192513474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:30,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:52:30,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2022-11-18 19:52:30,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649160770] [2022-11-18 19:52:30,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:30,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:52:30,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:30,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:52:30,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=314, Unknown=2, NotChecked=36, Total=420 [2022-11-18 19:52:30,916 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 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 19:52:32,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:32,281 INFO L93 Difference]: Finished difference Result 125 states and 151 transitions. [2022-11-18 19:52:32,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:52:32,282 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 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) Word has length 45 [2022-11-18 19:52:32,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:32,283 INFO L225 Difference]: With dead ends: 125 [2022-11-18 19:52:32,283 INFO L226 Difference]: Without dead ends: 118 [2022-11-18 19:52:32,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 67 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=108, Invalid=494, Unknown=2, NotChecked=46, Total=650 [2022-11-18 19:52:32,285 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 113 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:32,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 76 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 534 Invalid, 0 Unknown, 213 Unchecked, 1.0s Time] [2022-11-18 19:52:32,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-18 19:52:32,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2022-11-18 19:52:32,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 88 states have internal predecessors, (105), 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 19:52:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 105 transitions. [2022-11-18 19:52:32,314 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 105 transitions. Word has length 45 [2022-11-18 19:52:32,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:32,314 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 105 transitions. [2022-11-18 19:52:32,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 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 19:52:32,314 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 105 transitions. [2022-11-18 19:52:32,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 19:52:32,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:32,315 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:32,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:32,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:32,516 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:32,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:32,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1431802284, now seen corresponding path program 5 times [2022-11-18 19:52:32,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:32,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621164241] [2022-11-18 19:52:32,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:32,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:32,533 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:52:32,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [254221157] [2022-11-18 19:52:32,534 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:52:32,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:32,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:32,535 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:32,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 19:52:32,763 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 19:52:32,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:32,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-18 19:52:32,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:32,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:52:33,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2022-11-18 19:52:33,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:52:33,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:52:33,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:52:33,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:52:33,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:52:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 41 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:52:33,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:33,740 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_935 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_935) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2)) is different from false [2022-11-18 19:52:33,757 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_935 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_935) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2022-11-18 19:52:34,290 INFO L321 Elim1Store]: treesize reduction 29, result has 48.2 percent of original size [2022-11-18 19:52:34,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 43 [2022-11-18 19:52:34,307 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:52:34,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2022-11-18 19:52:34,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 19:52:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 7 not checked. [2022-11-18 19:52:34,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:34,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621164241] [2022-11-18 19:52:34,615 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:52:34,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254221157] [2022-11-18 19:52:34,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254221157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:34,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:52:34,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2022-11-18 19:52:34,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590892186] [2022-11-18 19:52:34,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:34,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:52:34,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:34,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:52:34,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=490, Unknown=7, NotChecked=94, Total=702 [2022-11-18 19:52:34,617 INFO L87 Difference]: Start difference. First operand 89 states and 105 transitions. Second operand has 27 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 27 states have internal predecessors, (68), 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 19:52:35,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:35,364 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2022-11-18 19:52:35,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:52:35,365 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 27 states have internal predecessors, (68), 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) Word has length 45 [2022-11-18 19:52:35,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:35,366 INFO L225 Difference]: With dead ends: 99 [2022-11-18 19:52:35,366 INFO L226 Difference]: Without dead ends: 89 [2022-11-18 19:52:35,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=124, Invalid=527, Unknown=7, NotChecked=98, Total=756 [2022-11-18 19:52:35,368 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 84 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:35,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 71 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 265 Invalid, 0 Unknown, 168 Unchecked, 0.6s Time] [2022-11-18 19:52:35,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-18 19:52:35,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-18 19:52:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 88 states have internal predecessors, (103), 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 19:52:35,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2022-11-18 19:52:35,404 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 45 [2022-11-18 19:52:35,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:35,404 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2022-11-18 19:52:35,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 27 states have internal predecessors, (68), 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 19:52:35,404 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2022-11-18 19:52:35,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 19:52:35,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:35,405 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:35,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:35,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-18 19:52:35,606 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:35,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:35,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1853695216, now seen corresponding path program 6 times [2022-11-18 19:52:35,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:35,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141764611] [2022-11-18 19:52:35,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:35,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:35,620 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:52:35,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95673664] [2022-11-18 19:52:35,620 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:52:35,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:35,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:35,622 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:35,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 19:52:35,863 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 19:52:35,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:35,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-18 19:52:35,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:36,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2022-11-18 19:52:36,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:52:36,692 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 19:52:36,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-11-18 19:52:37,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:52:37,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:52:37,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:52:37,160 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:52:37,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-11-18 19:52:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 38 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:52:37,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:37,408 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1004 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2)) is different from false [2022-11-18 19:52:37,428 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1004 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) is different from false [2022-11-18 19:53:09,163 INFO L321 Elim1Store]: treesize reduction 43, result has 58.3 percent of original size [2022-11-18 19:53:09,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 76 [2022-11-18 19:53:09,193 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:53:09,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 68 [2022-11-18 19:53:09,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 19:53:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 17 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 2 not checked. [2022-11-18 19:53:15,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:15,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141764611] [2022-11-18 19:53:15,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:15,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95673664] [2022-11-18 19:53:15,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95673664] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:15,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:15,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-18 19:53:15,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719794879] [2022-11-18 19:53:15,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:15,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:53:15,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:15,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:53:15,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=920, Unknown=20, NotChecked=130, Total=1260 [2022-11-18 19:53:15,788 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand has 36 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 36 states have internal predecessors, (69), 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 19:53:18,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:18,996 INFO L93 Difference]: Finished difference Result 108 states and 124 transitions. [2022-11-18 19:53:18,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:53:18,996 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 36 states have internal predecessors, (69), 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) Word has length 45 [2022-11-18 19:53:18,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:18,997 INFO L225 Difference]: With dead ends: 108 [2022-11-18 19:53:18,997 INFO L226 Difference]: Without dead ends: 90 [2022-11-18 19:53:18,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 41.4s TimeCoverageRelationStatistics Valid=270, Invalid=1199, Unknown=21, NotChecked=150, Total=1640 [2022-11-18 19:53:18,999 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 97 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:18,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 76 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 368 Invalid, 0 Unknown, 163 Unchecked, 0.6s Time] [2022-11-18 19:53:18,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-18 19:53:19,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2022-11-18 19:53:19,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1363636363636365) internal successors, (100), 88 states have internal predecessors, (100), 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 19:53:19,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2022-11-18 19:53:19,023 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 45 [2022-11-18 19:53:19,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:19,024 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2022-11-18 19:53:19,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 36 states have internal predecessors, (69), 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 19:53:19,024 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2022-11-18 19:53:19,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 19:53:19,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:19,025 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:19,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-18 19:53:19,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 19:53:19,231 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:19,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:19,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1365458192, now seen corresponding path program 1 times [2022-11-18 19:53:19,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:19,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425509974] [2022-11-18 19:53:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:19,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:21,546 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:53:21,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:21,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425509974] [2022-11-18 19:53:21,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425509974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:21,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676189024] [2022-11-18 19:53:21,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:21,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:21,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:21,551 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:21,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 19:53:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:21,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 19:53:21,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:21,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:53:22,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:22,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:53:22,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:22,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:53:22,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:22,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:53:22,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:53:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:53:22,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:23,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-18 19:53:23,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-18 19:53:23,506 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:53:23,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676189024] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:23,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:23,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 12] total 41 [2022-11-18 19:53:23,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250206473] [2022-11-18 19:53:23,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:23,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 19:53:23,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:23,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 19:53:23,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1520, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 19:53:23,509 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 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 19:53:30,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:30,080 INFO L93 Difference]: Finished difference Result 157 states and 186 transitions. [2022-11-18 19:53:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-18 19:53:30,081 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 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) Word has length 45 [2022-11-18 19:53:30,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:30,082 INFO L225 Difference]: With dead ends: 157 [2022-11-18 19:53:30,082 INFO L226 Difference]: Without dead ends: 134 [2022-11-18 19:53:30,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1475 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=482, Invalid=5998, Unknown=0, NotChecked=0, Total=6480 [2022-11-18 19:53:30,084 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 146 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:30,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 194 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-18 19:53:30,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-18 19:53:30,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2022-11-18 19:53:30,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.1724137931034482) internal successors, (136), 116 states have internal predecessors, (136), 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 19:53:30,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2022-11-18 19:53:30,131 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 45 [2022-11-18 19:53:30,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:30,131 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2022-11-18 19:53:30,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 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 19:53:30,131 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2022-11-18 19:53:30,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 19:53:30,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:30,132 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:30,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-18 19:53:30,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 19:53:30,333 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:30,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:30,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1510143892, now seen corresponding path program 11 times [2022-11-18 19:53:30,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:30,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010066258] [2022-11-18 19:53:30,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:30,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,735 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:53:30,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:30,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010066258] [2022-11-18 19:53:30,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010066258] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:30,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945240809] [2022-11-18 19:53:30,736 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:53:30,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:30,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:30,738 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:30,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 19:53:31,082 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 19:53:31,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:31,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:53:31,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:53:31,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:53:31,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945240809] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:31,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:31,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-11-18 19:53:31,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621248186] [2022-11-18 19:53:31,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:31,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:53:31,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:31,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:53:31,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:53:31,790 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 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 19:53:32,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:32,993 INFO L93 Difference]: Finished difference Result 167 states and 194 transitions. [2022-11-18 19:53:32,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:53:32,994 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 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) Word has length 47 [2022-11-18 19:53:32,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:32,995 INFO L225 Difference]: With dead ends: 167 [2022-11-18 19:53:32,995 INFO L226 Difference]: Without dead ends: 148 [2022-11-18 19:53:32,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 77 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:53:32,996 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 115 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:32,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 37 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:53:32,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-18 19:53:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 102. [2022-11-18 19:53:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.188118811881188) internal successors, (120), 101 states have internal predecessors, (120), 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 19:53:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 120 transitions. [2022-11-18 19:53:33,029 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 120 transitions. Word has length 47 [2022-11-18 19:53:33,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:33,029 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 120 transitions. [2022-11-18 19:53:33,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 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 19:53:33,030 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 120 transitions. [2022-11-18 19:53:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 19:53:33,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:33,030 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:33,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:33,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:33,231 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:33,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:33,231 INFO L85 PathProgramCache]: Analyzing trace with hash -220752601, now seen corresponding path program 12 times [2022-11-18 19:53:33,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:33,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331874712] [2022-11-18 19:53:33,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:33,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:33,549 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:53:33,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:33,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331874712] [2022-11-18 19:53:33,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331874712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:33,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008219919] [2022-11-18 19:53:33,550 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:53:33,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:33,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:33,551 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:33,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 19:53:33,729 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 19:53:33,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:33,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:53:33,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:53:34,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:53:34,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008219919] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:34,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:34,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-11-18 19:53:34,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132354486] [2022-11-18 19:53:34,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:34,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:53:34,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:34,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:53:34,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:53:34,374 INFO L87 Difference]: Start difference. First operand 102 states and 120 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 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 19:53:34,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:34,990 INFO L93 Difference]: Finished difference Result 154 states and 178 transitions. [2022-11-18 19:53:34,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:53:34,991 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 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) Word has length 48 [2022-11-18 19:53:34,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:34,992 INFO L225 Difference]: With dead ends: 154 [2022-11-18 19:53:34,992 INFO L226 Difference]: Without dead ends: 75 [2022-11-18 19:53:34,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:53:34,993 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 115 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:34,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 30 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:53:34,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-18 19:53:35,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2022-11-18 19:53:35,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.1470588235294117) internal successors, (78), 68 states have internal predecessors, (78), 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 19:53:35,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2022-11-18 19:53:35,010 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 48 [2022-11-18 19:53:35,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:35,010 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2022-11-18 19:53:35,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 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 19:53:35,011 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2022-11-18 19:53:35,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 19:53:35,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:35,012 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:35,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:35,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 19:53:35,218 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:35,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:35,218 INFO L85 PathProgramCache]: Analyzing trace with hash 663114381, now seen corresponding path program 13 times [2022-11-18 19:53:35,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:35,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003301553] [2022-11-18 19:53:35,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:35,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 19:53:38,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:38,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003301553] [2022-11-18 19:53:38,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003301553] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:38,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092523641] [2022-11-18 19:53:38,026 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:53:38,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:38,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:38,027 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:38,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 19:53:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:38,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-18 19:53:38,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:38,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:38,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:53:38,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:38,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:38,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:39,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:39,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:39,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:39,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:39,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:39,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:39,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:40,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 19:53:40,558 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:53:40,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2022-11-18 19:53:40,966 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:53:40,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2022-11-18 19:53:41,424 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 19:53:41,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 60 [2022-11-18 19:53:41,877 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 19:53:41,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 58 [2022-11-18 19:53:42,194 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 19:53:42,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 36 [2022-11-18 19:53:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:53:42,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:59,660 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_400| Int) (|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_402| Int) (|v_ULTIMATE.start_main_~i~0#1_396| Int) (|v_ULTIMATE.start_main_~i~0#1_398| Int) (v_ArrVal_1293 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1293))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse4 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse0 (select v_ArrVal_1293 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_402| 4))))) (let ((.cse1 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_400| 4))))) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse1 .cse0 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_398| 4))))) (let ((.cse3 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse1 .cse0 .cse2 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_396| 4))))) (or (not (= 2 .cse0)) (not (= 2 .cse1)) (not (= 2 .cse2)) (not (= .cse3 2)) (= (+ .cse4 .cse3 .cse1 .cse0 .cse2 .cse5) (* c_~N~0 2)) (not (= 2 .cse5))))))))))) is different from false [2022-11-18 19:54:05,352 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 19:54:05,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1901 treesize of output 1 [2022-11-18 19:54:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 26 trivial. 9 not checked. [2022-11-18 19:54:05,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092523641] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:05,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:05,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23, 22] total 65 [2022-11-18 19:54:05,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970830638] [2022-11-18 19:54:05,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:05,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-18 19:54:05,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:05,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-18 19:54:05,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=3769, Unknown=8, NotChecked=124, Total=4160 [2022-11-18 19:54:05,363 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 65 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 65 states have internal predecessors, (111), 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 19:54:16,799 WARN L233 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 87 DAG size of output: 21 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:54:23,844 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 89 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:54:29,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:29,783 INFO L93 Difference]: Finished difference Result 145 states and 168 transitions. [2022-11-18 19:54:29,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-18 19:54:29,783 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 65 states have internal predecessors, (111), 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) Word has length 53 [2022-11-18 19:54:29,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:29,784 INFO L225 Difference]: With dead ends: 145 [2022-11-18 19:54:29,784 INFO L226 Difference]: Without dead ends: 139 [2022-11-18 19:54:29,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1949 ImplicationChecksByTransitivity, 46.9s TimeCoverageRelationStatistics Valid=521, Invalid=6613, Unknown=10, NotChecked=166, Total=7310 [2022-11-18 19:54:29,786 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 67 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 706 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:29,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 172 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 450 Invalid, 0 Unknown, 706 Unchecked, 0.9s Time] [2022-11-18 19:54:29,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-18 19:54:29,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 131. [2022-11-18 19:54:29,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.1692307692307693) internal successors, (152), 130 states have internal predecessors, (152), 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 19:54:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2022-11-18 19:54:29,846 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 53 [2022-11-18 19:54:29,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:29,846 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2022-11-18 19:54:29,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 65 states have internal predecessors, (111), 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 19:54:29,847 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2022-11-18 19:54:29,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 19:54:29,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:29,848 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:29,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-11-18 19:54:30,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 19:54:30,053 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:30,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:30,054 INFO L85 PathProgramCache]: Analyzing trace with hash 720372683, now seen corresponding path program 7 times [2022-11-18 19:54:30,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:30,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12383600] [2022-11-18 19:54:30,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:30,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:30,068 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:54:30,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574139302] [2022-11-18 19:54:30,069 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:54:30,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:30,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:30,070 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:30,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 19:54:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:30,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 19:54:30,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:30,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:54:30,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-18 19:54:30,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:54:30,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:54:31,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:54:31,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:54:31,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:54:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 85 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:54:31,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:31,479 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1385 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1385) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2)) is different from false [2022-11-18 19:54:31,718 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1385 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1385) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 16 |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2022-11-18 19:54:31,938 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:54:31,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 31 [2022-11-18 19:54:31,961 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:54:31,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2022-11-18 19:54:31,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 19:54:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 44 refuted. 0 times theorem prover too weak. 25 trivial. 17 not checked. [2022-11-18 19:54:32,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:32,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12383600] [2022-11-18 19:54:32,488 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:54:32,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574139302] [2022-11-18 19:54:32,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574139302] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:32,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:54:32,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2022-11-18 19:54:32,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041580266] [2022-11-18 19:54:32,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:32,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:54:32,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:32,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:54:32,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=686, Unknown=9, NotChecked=110, Total=930 [2022-11-18 19:54:32,492 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 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 19:54:34,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:34,085 INFO L93 Difference]: Finished difference Result 194 states and 227 transitions. [2022-11-18 19:54:34,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:54:34,086 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 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) Word has length 53 [2022-11-18 19:54:34,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:34,087 INFO L225 Difference]: With dead ends: 194 [2022-11-18 19:54:34,087 INFO L226 Difference]: Without dead ends: 187 [2022-11-18 19:54:34,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 76 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=147, Invalid=782, Unknown=9, NotChecked=118, Total=1056 [2022-11-18 19:54:34,088 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 144 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 404 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:34,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 144 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 766 Invalid, 0 Unknown, 404 Unchecked, 1.3s Time] [2022-11-18 19:54:34,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-18 19:54:34,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 156. [2022-11-18 19:54:34,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.167741935483871) internal successors, (181), 155 states have internal predecessors, (181), 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 19:54:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 181 transitions. [2022-11-18 19:54:34,161 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 181 transitions. Word has length 53 [2022-11-18 19:54:34,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:34,161 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 181 transitions. [2022-11-18 19:54:34,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 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 19:54:34,161 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 181 transitions. [2022-11-18 19:54:34,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 19:54:34,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:34,162 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:34,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:34,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 19:54:34,369 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:34,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:34,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1085065651, now seen corresponding path program 3 times [2022-11-18 19:54:34,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:34,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867776762] [2022-11-18 19:54:34,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:34,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:34,384 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:54:34,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141694292] [2022-11-18 19:54:34,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:54:34,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:34,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:34,386 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:34,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 19:54:34,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 19:54:34,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:34,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-18 19:54:34,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:34,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 19:54:35,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:54:35,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:54:35,308 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 19:54:35,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-18 19:54:35,572 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 19:54:35,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 47 [2022-11-18 19:54:35,806 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 19:54:35,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 47 [2022-11-18 19:54:35,917 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:54:35,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-18 19:54:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 19:54:36,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:36,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2022-11-18 19:54:43,078 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1462 Int) (|v_ULTIMATE.start_main_~i~0#1_464| Int) (v_ArrVal_1464 Int) (|v_ULTIMATE.start_main_~i~0#1_460| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_460| (+ 3 |v_ULTIMATE.start_main_~i~0#1_464|)) (not (< |v_ULTIMATE.start_main_~i~0#1_460| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_460| 1) c_~N~0) (= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1462) (+ (* |v_ULTIMATE.start_main_~i~0#1_464| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1464) (+ (* |v_ULTIMATE.start_main_~i~0#1_460| 4) |c_ULTIMATE.start_main_~a~0#1.offset|)) 1))) is different from false [2022-11-18 19:54:44,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2022-11-18 19:54:44,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1246 treesize of output 1198 [2022-11-18 19:54:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 10 proven. 39 refuted. 0 times theorem prover too weak. 37 trivial. 9 not checked. [2022-11-18 19:54:45,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:45,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867776762] [2022-11-18 19:54:45,721 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:54:45,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141694292] [2022-11-18 19:54:45,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141694292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:45,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:54:45,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 31 [2022-11-18 19:54:45,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770909555] [2022-11-18 19:54:45,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:45,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:54:45,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:45,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:54:45,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=699, Unknown=3, NotChecked=56, Total=930 [2022-11-18 19:54:45,724 INFO L87 Difference]: Start difference. First operand 156 states and 181 transitions. Second operand has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 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 19:54:46,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:46,376 INFO L93 Difference]: Finished difference Result 185 states and 216 transitions. [2022-11-18 19:54:46,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:54:46,376 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 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) Word has length 53 [2022-11-18 19:54:46,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:46,377 INFO L225 Difference]: With dead ends: 185 [2022-11-18 19:54:46,377 INFO L226 Difference]: Without dead ends: 135 [2022-11-18 19:54:46,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=251, Invalid=1082, Unknown=3, NotChecked=70, Total=1406 [2022-11-18 19:54:46,379 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:46,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 42 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 98 Invalid, 0 Unknown, 79 Unchecked, 0.2s Time] [2022-11-18 19:54:46,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-18 19:54:46,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 130. [2022-11-18 19:54:46,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.1395348837209303) internal successors, (147), 129 states have internal predecessors, (147), 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 19:54:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 147 transitions. [2022-11-18 19:54:46,417 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 147 transitions. Word has length 53 [2022-11-18 19:54:46,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:46,417 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 147 transitions. [2022-11-18 19:54:46,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 31 states have internal predecessors, (64), 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 19:54:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 147 transitions. [2022-11-18 19:54:46,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 19:54:46,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:46,419 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:46,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:46,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 19:54:46,625 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:46,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:46,625 INFO L85 PathProgramCache]: Analyzing trace with hash 783767503, now seen corresponding path program 14 times [2022-11-18 19:54:46,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:46,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426783745] [2022-11-18 19:54:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:46,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:54:47,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:47,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426783745] [2022-11-18 19:54:47,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426783745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:47,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624735186] [2022-11-18 19:54:47,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:54:47,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:47,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:47,065 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:47,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 19:54:47,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:54:47,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:47,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:54:47,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:54:47,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:54:47,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624735186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:47,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:47,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-11-18 19:54:47,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477425071] [2022-11-18 19:54:47,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:47,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:54:47,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:47,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:54:47,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:54:47,961 INFO L87 Difference]: Start difference. First operand 130 states and 147 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 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 19:54:49,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:49,577 INFO L93 Difference]: Finished difference Result 166 states and 189 transitions. [2022-11-18 19:54:49,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:54:49,578 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 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) Word has length 55 [2022-11-18 19:54:49,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:49,578 INFO L225 Difference]: With dead ends: 166 [2022-11-18 19:54:49,578 INFO L226 Difference]: Without dead ends: 144 [2022-11-18 19:54:49,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 90 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:54:49,580 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 147 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:49,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 37 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:54:49,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-18 19:54:49,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 111. [2022-11-18 19:54:49,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 110 states have internal predecessors, (125), 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 19:54:49,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2022-11-18 19:54:49,629 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 55 [2022-11-18 19:54:49,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:49,629 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2022-11-18 19:54:49,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 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 19:54:49,629 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2022-11-18 19:54:49,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 19:54:49,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:49,630 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:49,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:49,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 19:54:49,831 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:49,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:49,831 INFO L85 PathProgramCache]: Analyzing trace with hash -469998324, now seen corresponding path program 15 times [2022-11-18 19:54:49,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:49,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663075019] [2022-11-18 19:54:49,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:49,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 38 proven. 38 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:54:50,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:50,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663075019] [2022-11-18 19:54:50,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663075019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:50,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142543169] [2022-11-18 19:54:50,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:54:50,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:50,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:50,248 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:50,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 19:54:50,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-18 19:54:50,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:50,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:54:50,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:54:50,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:54:51,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142543169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:51,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:51,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-11-18 19:54:51,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864471110] [2022-11-18 19:54:51,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:51,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:54:51,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:51,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:54:51,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:54:51,320 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 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 19:54:52,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:52,060 INFO L93 Difference]: Finished difference Result 169 states and 195 transitions. [2022-11-18 19:54:52,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:54:52,061 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 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) Word has length 56 [2022-11-18 19:54:52,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:52,061 INFO L225 Difference]: With dead ends: 169 [2022-11-18 19:54:52,062 INFO L226 Difference]: Without dead ends: 89 [2022-11-18 19:54:52,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 92 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:54:52,063 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 122 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:52,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 42 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:54:52,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-18 19:54:52,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2022-11-18 19:54:52,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.1538461538461537) internal successors, (90), 78 states have internal predecessors, (90), 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 19:54:52,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2022-11-18 19:54:52,086 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 56 [2022-11-18 19:54:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:52,086 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2022-11-18 19:54:52,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 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 19:54:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2022-11-18 19:54:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 19:54:52,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:52,087 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:52,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:52,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:52,288 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:52,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:52,288 INFO L85 PathProgramCache]: Analyzing trace with hash -844503370, now seen corresponding path program 16 times [2022-11-18 19:54:52,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:52,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058843995] [2022-11-18 19:54:52,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:52,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 19:54:56,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:56,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058843995] [2022-11-18 19:54:56,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058843995] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:56,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719987872] [2022-11-18 19:54:56,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:54:56,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:56,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:56,471 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:56,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 19:54:56,682 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:54:56,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:56,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-18 19:54:56,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:56,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:54:56,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:54:56,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:54:56,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:54:56,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:54:57,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:54:57,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:54:57,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:54:57,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:54:57,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:54:57,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:54:57,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:54:57,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:54:57,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:54:58,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 19:54:58,522 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:54:58,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2022-11-18 19:54:58,938 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 19:54:58,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 59 [2022-11-18 19:54:59,430 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-18 19:54:59,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 119 treesize of output 75 [2022-11-18 19:55:00,085 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-18 19:55:00,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 120 treesize of output 76 [2022-11-18 19:55:00,604 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 19:55:00,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 60 [2022-11-18 19:55:00,933 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 19:55:00,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 31 [2022-11-18 19:55:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 19:55:01,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:37,001 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_543| Int) (|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_545| Int) (|v_ULTIMATE.start_main_~i~0#1_541| Int) (|v_ULTIMATE.start_main_~i~0#1_539| Int) (v_ArrVal_1726 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_537| Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1726))) (let ((.cse8 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse4 (select v_ArrVal_1726 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (.cse5 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_545| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse0 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_543| 4))))) (let ((.cse1 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse4 .cse5 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_541| 4))))) (let ((.cse6 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse4 .cse5 .cse1 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_539| 4))))) (let ((.cse2 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse4 .cse5 .cse6 .cse1 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_537| 4))))) (or (not (= .cse0 2)) (not (= 2 .cse1)) (not (= .cse2 2)) (not (= 2 .cse3)) (= (* c_~N~0 2) (+ .cse0 .cse4 .cse5 .cse6 .cse2 .cse1 .cse3)) (not (= .cse6 2)) (not (= .cse4 2)))))))))))) is different from false [2022-11-18 19:55:43,590 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (* 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (v_ArrVal_1726 (Array Int Int))) (let ((.cse4 (select v_ArrVal_1726 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_545| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1726))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_545| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= 2 .cse0)) (forall ((|v_ULTIMATE.start_main_~i~0#1_543| Int)) (let ((.cse5 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse0 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_543| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_541| Int)) (let ((.cse1 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse0 .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_541| 4))))) (or (not (= .cse1 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_539| Int)) (let ((.cse6 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse1 .cse0 .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_539| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_537| Int)) (let ((.cse3 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse1 .cse0 .cse4 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_537| 4))))) (or (< (+ .cse2 .cse3 .cse1 .cse0 .cse4 .cse5 .cse6) (+ .cse7 3)) (not (= .cse3 2))))) (not (= 2 .cse6)))))))) (not (= 2 .cse5))))))))))) (not (= 2 .cse4))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (v_ArrVal_1726 (Array Int Int))) (let ((.cse15 (select v_ArrVal_1726 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_545| Int)) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1726))) (let ((.cse18 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse10 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_545| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= 2 .cse10)) (forall ((|v_ULTIMATE.start_main_~i~0#1_543| Int)) (let ((.cse16 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse10 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_543| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_541| Int)) (let ((.cse14 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse10 .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_541| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_539| Int)) (let ((.cse11 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse14 .cse10 .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_539| 4))))) (or (not (= 2 .cse11)) (forall ((|v_ULTIMATE.start_main_~i~0#1_537| Int)) (let ((.cse13 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse14 .cse10 .cse15 .cse16 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_537| 4))))) (or (< (+ .cse7 1) (+ .cse12 .cse13 .cse14 .cse10 .cse15 .cse16 .cse11)) (not (= .cse13 2)))))))) (not (= .cse14 2))))) (not (= 2 .cse16))))))))))) (not (= 2 .cse15))))))) is different from false [2022-11-18 19:55:43,911 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (* 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (v_ArrVal_1726 (Array Int Int))) (let ((.cse0 (select v_ArrVal_1726 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (not (= 2 .cse0)) (forall ((|v_ULTIMATE.start_main_~i~0#1_545| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1726))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse1 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_545| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= 2 .cse1)) (forall ((|v_ULTIMATE.start_main_~i~0#1_543| Int)) (let ((.cse5 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse1 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_543| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_541| Int)) (let ((.cse4 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse1 .cse0 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_541| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_539| Int)) (let ((.cse6 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse4 .cse1 .cse0 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_539| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_537| Int)) (let ((.cse3 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse4 .cse1 .cse0 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_537| 4))))) (or (< (+ .cse2 .cse3 .cse4 .cse1 .cse0 .cse5 .cse6) (+ .cse7 5)) (not (= .cse3 2))))) (not (= 2 .cse6))))) (not (= .cse4 2))))) (not (= 2 .cse5)))))))))))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (v_ArrVal_1726 (Array Int Int))) (let ((.cse15 (select v_ArrVal_1726 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_545| Int)) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1726))) (let ((.cse18 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse10 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_545| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= 2 .cse10)) (forall ((|v_ULTIMATE.start_main_~i~0#1_543| Int)) (let ((.cse11 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse10 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_543| 4))))) (or (not (= 2 .cse11)) (forall ((|v_ULTIMATE.start_main_~i~0#1_541| Int)) (let ((.cse14 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse10 .cse15 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_541| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_539| Int)) (let ((.cse16 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse14 .cse10 .cse15 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_539| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_537| Int)) (let ((.cse13 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse14 .cse10 .cse15 .cse11 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_537| 4))))) (or (< (+ .cse7 3) (+ .cse12 .cse13 .cse14 .cse10 .cse15 .cse11 .cse16)) (not (= .cse13 2))))) (not (= 2 .cse16))))) (not (= .cse14 2)))))))))))))) (not (= 2 .cse15))))))) is different from false [2022-11-18 19:55:44,613 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (* 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (v_ArrVal_1726 (Array Int Int))) (let ((.cse6 (select v_ArrVal_1726 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_545| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1726))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse3 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse5 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_545| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_543| Int)) (let ((.cse0 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_543| 4))))) (or (not (= 2 .cse0)) (forall ((|v_ULTIMATE.start_main_~i~0#1_541| Int)) (let ((.cse1 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5 .cse6 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_541| 4))))) (or (not (= .cse1 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_539| Int)) (let ((.cse7 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse1 .cse5 .cse6 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_539| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_537| Int)) (let ((.cse4 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse1 .cse5 .cse6 .cse0 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_537| 4))))) (or (< (+ .cse2 5) (+ .cse3 .cse4 .cse1 .cse5 .cse6 .cse0 .cse7)) (not (= .cse4 2))))) (not (= 2 .cse7))))))))))) (not (= 2 .cse5)))))))) (not (= 2 .cse6))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (v_ArrVal_1726 (Array Int Int))) (let ((.cse15 (select v_ArrVal_1726 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_545| Int)) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1726))) (let ((.cse18 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse14 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_545| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_543| Int)) (let ((.cse10 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse14 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_543| 4))))) (or (not (= 2 .cse10)) (forall ((|v_ULTIMATE.start_main_~i~0#1_541| Int)) (let ((.cse11 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse14 .cse15 .cse10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_541| 4))))) (or (not (= .cse11 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_539| Int)) (let ((.cse16 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse11 .cse14 .cse15 .cse10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_539| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_537| Int)) (let ((.cse13 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse11 .cse14 .cse15 .cse10 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_537| 4))))) (or (< (+ .cse12 .cse13 .cse11 .cse14 .cse15 .cse10 .cse16) (+ .cse2 7)) (not (= .cse13 2))))) (not (= 2 .cse16))))))))))) (not (= 2 .cse14)))))))) (not (= 2 .cse15))))))) is different from false [2022-11-18 19:55:45,252 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (* 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (v_ArrVal_1726 (Array Int Int))) (let ((.cse5 (select v_ArrVal_1726 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_545| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1726))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse3 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_545| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= 2 .cse0)) (forall ((|v_ULTIMATE.start_main_~i~0#1_543| Int)) (let ((.cse1 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse0 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_543| 4))))) (or (not (= 2 .cse1)) (forall ((|v_ULTIMATE.start_main_~i~0#1_541| Int)) (let ((.cse2 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse0 .cse5 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_541| 4))))) (or (not (= .cse2 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_539| Int)) (let ((.cse6 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse2 .cse0 .cse5 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_539| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_537| Int)) (let ((.cse4 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse2 .cse0 .cse5 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_537| 4))))) (or (< (+ .cse3 .cse4 .cse2 .cse0 .cse5 .cse1 .cse6) (+ .cse7 9)) (not (= .cse4 2))))) (not (= 2 .cse6))))))))))))))))) (not (= 2 .cse5))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (v_ArrVal_1726 (Array Int Int))) (let ((.cse16 (select v_ArrVal_1726 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_545| Int)) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1726))) (let ((.cse18 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse14 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse10 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse14 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_545| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= 2 .cse10)) (forall ((|v_ULTIMATE.start_main_~i~0#1_543| Int)) (let ((.cse11 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse14 .cse10 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_543| 4))))) (or (not (= 2 .cse11)) (forall ((|v_ULTIMATE.start_main_~i~0#1_541| Int)) (let ((.cse12 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse14 .cse10 .cse16 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_541| 4))))) (or (not (= .cse12 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_539| Int)) (let ((.cse13 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse14 .cse12 .cse10 .cse16 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_539| 4))))) (or (not (= 2 .cse13)) (forall ((|v_ULTIMATE.start_main_~i~0#1_537| Int)) (let ((.cse15 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse14 .cse12 .cse10 .cse16 .cse11 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_537| 4))))) (or (< (+ .cse7 7) (+ .cse14 .cse15 .cse12 .cse10 .cse16 .cse11 .cse13)) (not (= .cse15 2)))))))))))))))))))) (not (= 2 .cse16))))))) is different from false [2022-11-18 19:55:45,872 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (* 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (v_ArrVal_1726 (Array Int Int))) (let ((.cse6 (select v_ArrVal_1726 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_545| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1726))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse4 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_545| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= 2 .cse0)) (forall ((|v_ULTIMATE.start_main_~i~0#1_543| Int)) (let ((.cse1 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_543| 4))))) (or (not (= 2 .cse1)) (forall ((|v_ULTIMATE.start_main_~i~0#1_541| Int)) (let ((.cse2 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0 .cse6 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_541| 4))))) (or (not (= .cse2 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_539| Int)) (let ((.cse3 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse2 .cse0 .cse6 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_539| 4))))) (or (not (= 2 .cse3)) (forall ((|v_ULTIMATE.start_main_~i~0#1_537| Int)) (let ((.cse5 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse2 .cse0 .cse6 .cse1 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_537| 4))))) (or (< (+ .cse4 .cse5 .cse2 .cse0 .cse6 .cse1 .cse3) (+ .cse7 11)) (not (= .cse5 2)))))))))))))))))))) (not (= 2 .cse6))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (v_ArrVal_1726 (Array Int Int))) (let ((.cse10 (select v_ArrVal_1726 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (not (= 2 .cse10)) (forall ((|v_ULTIMATE.start_main_~i~0#1_545| Int)) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1726))) (let ((.cse18 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse13 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse11 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_545| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= 2 .cse11)) (forall ((|v_ULTIMATE.start_main_~i~0#1_543| Int)) (let ((.cse15 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse11 .cse10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_543| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_541| Int)) (let ((.cse12 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse11 .cse10 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_541| 4))))) (or (not (= .cse12 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_539| Int)) (let ((.cse16 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse12 .cse11 .cse10 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_539| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_537| Int)) (let ((.cse14 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse12 .cse11 .cse10 .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_537| 4))))) (or (< (+ .cse7 9) (+ .cse13 .cse14 .cse12 .cse11 .cse10 .cse15 .cse16)) (not (= .cse14 2))))) (not (= 2 .cse16)))))))) (not (= 2 .cse15)))))))))))))))) is different from false [2022-11-18 19:55:46,484 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (* 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (v_ArrVal_1726 (Array Int Int))) (let ((.cse6 (select v_ArrVal_1726 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_545| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1726))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse3 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_545| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= 2 .cse0)) (forall ((|v_ULTIMATE.start_main_~i~0#1_543| Int)) (let ((.cse1 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse0 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_543| 4))))) (or (not (= 2 .cse1)) (forall ((|v_ULTIMATE.start_main_~i~0#1_541| Int)) (let ((.cse5 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse0 .cse6 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_541| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_539| Int)) (let ((.cse7 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5 .cse0 .cse6 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_539| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_537| Int)) (let ((.cse4 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5 .cse0 .cse6 .cse1 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_537| 4))))) (or (< (+ .cse2 11) (+ .cse3 .cse4 .cse5 .cse0 .cse6 .cse1 .cse7)) (not (= .cse4 2))))) (not (= 2 .cse7))))) (not (= .cse5 2)))))))))))))) (not (= 2 .cse6))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (v_ArrVal_1726 (Array Int Int))) (let ((.cse15 (select v_ArrVal_1726 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_545| Int)) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1726))) (let ((.cse18 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse13 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse10 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_545| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (not (= 2 .cse10)) (forall ((|v_ULTIMATE.start_main_~i~0#1_543| Int)) (let ((.cse11 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse10 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_543| 4))))) (or (not (= 2 .cse11)) (forall ((|v_ULTIMATE.start_main_~i~0#1_541| Int)) (let ((.cse12 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse10 .cse15 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_541| 4))))) (or (not (= .cse12 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_539| Int)) (let ((.cse16 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse12 .cse10 .cse15 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_539| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_537| Int)) (let ((.cse14 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse12 .cse10 .cse15 .cse11 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_537| 4))))) (or (< (+ .cse13 .cse14 .cse12 .cse10 .cse15 .cse11 .cse16) (+ .cse2 13)) (not (= .cse14 2))))) (not (= 2 .cse16))))))))))))))))) (not (= 2 .cse15))))))) is different from false [2022-11-18 19:55:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 47 not checked. [2022-11-18 19:55:46,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719987872] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:46,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:46,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 25] total 73 [2022-11-18 19:55:46,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543231039] [2022-11-18 19:55:46,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:46,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-11-18 19:55:46,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:46,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-11-18 19:55:46,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=4036, Unknown=20, NotChecked=938, Total=5256 [2022-11-18 19:55:46,991 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand has 73 states, 73 states have (on average 1.7123287671232876) internal successors, (125), 73 states have internal predecessors, (125), 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 19:57:04,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:04,098 INFO L93 Difference]: Finished difference Result 174 states and 210 transitions. [2022-11-18 19:57:04,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 19:57:04,098 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.7123287671232876) internal successors, (125), 73 states have internal predecessors, (125), 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) Word has length 61 [2022-11-18 19:57:04,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:04,099 INFO L225 Difference]: With dead ends: 174 [2022-11-18 19:57:04,100 INFO L226 Difference]: Without dead ends: 170 [2022-11-18 19:57:04,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 93 SyntacticMatches, 12 SemanticMatches, 98 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 2660 ImplicationChecksByTransitivity, 115.8s TimeCoverageRelationStatistics Valid=733, Invalid=7819, Unknown=32, NotChecked=1316, Total=9900 [2022-11-18 19:57:04,102 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 159 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1532 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:04,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 259 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 1007 Invalid, 0 Unknown, 1532 Unchecked, 2.5s Time] [2022-11-18 19:57:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-18 19:57:04,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 156. [2022-11-18 19:57:04,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.2193548387096773) internal successors, (189), 155 states have internal predecessors, (189), 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 19:57:04,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 189 transitions. [2022-11-18 19:57:04,166 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 189 transitions. Word has length 61 [2022-11-18 19:57:04,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:04,167 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 189 transitions. [2022-11-18 19:57:04,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.7123287671232876) internal successors, (125), 73 states have internal predecessors, (125), 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 19:57:04,167 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 189 transitions. [2022-11-18 19:57:04,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 19:57:04,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:04,168 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:04,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-18 19:57:04,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-18 19:57:04,374 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:57:04,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:04,374 INFO L85 PathProgramCache]: Analyzing trace with hash -787245068, now seen corresponding path program 8 times [2022-11-18 19:57:04,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:04,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382991703] [2022-11-18 19:57:04,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:04,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:04,392 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:57:04,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665059379] [2022-11-18 19:57:04,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:57:04,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:04,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:04,394 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:04,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 19:57:04,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:57:04,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:57:04,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 19:57:04,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:05,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-18 19:57:05,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:05,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:57:05,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:05,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:57:05,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:05,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:57:06,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:06,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:57:06,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:06,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:57:06,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:57:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 11 proven. 126 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:57:06,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:06,841 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1831 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1831) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2)) is different from false [2022-11-18 19:57:06,867 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1831 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1831) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2)) is different from false [2022-11-18 19:57:06,893 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1831 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1831) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 20 |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2022-11-18 19:57:06,917 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1831 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1831) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 20 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2)) is different from false [2022-11-18 19:57:07,052 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:57:07,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 31 [2022-11-18 19:57:07,072 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:57:07,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2022-11-18 19:57:07,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 19:57:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 11 proven. 47 refuted. 0 times theorem prover too weak. 36 trivial. 44 not checked. [2022-11-18 19:57:07,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:07,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382991703] [2022-11-18 19:57:07,880 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:57:07,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665059379] [2022-11-18 19:57:07,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665059379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:07,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:57:07,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2022-11-18 19:57:07,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966999540] [2022-11-18 19:57:07,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:07,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 19:57:07,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:07,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 19:57:07,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=800, Unknown=8, NotChecked=244, Total=1190 [2022-11-18 19:57:07,883 INFO L87 Difference]: Start difference. First operand 156 states and 189 transitions. Second operand has 35 states, 35 states have (on average 2.914285714285714) internal successors, (102), 35 states have internal predecessors, (102), 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 19:57:11,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:11,163 INFO L93 Difference]: Finished difference Result 319 states and 398 transitions. [2022-11-18 19:57:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:57:11,164 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.914285714285714) internal successors, (102), 35 states have internal predecessors, (102), 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) Word has length 61 [2022-11-18 19:57:11,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:11,166 INFO L225 Difference]: With dead ends: 319 [2022-11-18 19:57:11,166 INFO L226 Difference]: Without dead ends: 312 [2022-11-18 19:57:11,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 88 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=170, Invalid=960, Unknown=8, NotChecked=268, Total=1406 [2022-11-18 19:57:11,167 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 201 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 607 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:11,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 121 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1065 Invalid, 0 Unknown, 607 Unchecked, 2.6s Time] [2022-11-18 19:57:11,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-18 19:57:11,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 228. [2022-11-18 19:57:11,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.2114537444933922) internal successors, (275), 227 states have internal predecessors, (275), 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 19:57:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 275 transitions. [2022-11-18 19:57:11,248 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 275 transitions. Word has length 61 [2022-11-18 19:57:11,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:11,248 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 275 transitions. [2022-11-18 19:57:11,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.914285714285714) internal successors, (102), 35 states have internal predecessors, (102), 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 19:57:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 275 transitions. [2022-11-18 19:57:11,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 19:57:11,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:11,250 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:11,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:11,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:11,455 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:57:11,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:11,456 INFO L85 PathProgramCache]: Analyzing trace with hash -164445000, now seen corresponding path program 9 times [2022-11-18 19:57:11,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:11,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674648790] [2022-11-18 19:57:11,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:11,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:11,472 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:57:11,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54324102] [2022-11-18 19:57:11,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:57:11,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:11,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:11,474 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:11,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 19:57:11,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-18 19:57:11,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:57:11,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 19:57:11,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:12,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2022-11-18 19:57:12,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-18 19:57:12,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:12,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-18 19:57:12,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:12,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-18 19:57:12,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:12,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-18 19:57:12,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:12,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-18 19:57:12,786 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:57:12,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-11-18 19:57:13,112 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 26 proven. 39 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-18 19:57:13,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:13,407 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_1925 (Array Int Int))) (or (<= (+ 3 |ULTIMATE.start_main_~i~0#1|) c_~N~0) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1925) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|)) 2) (<= c_~N~0 (+ |ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2022-11-18 19:57:28,081 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:57:28,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 46 [2022-11-18 19:57:28,105 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-11-18 19:57:28,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2022-11-18 19:57:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 4 proven. 27 refuted. 5 times theorem prover too weak. 73 trivial. 29 not checked. [2022-11-18 19:57:30,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:30,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674648790] [2022-11-18 19:57:30,298 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:57:30,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54324102] [2022-11-18 19:57:30,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54324102] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:30,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:57:30,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 24 [2022-11-18 19:57:30,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957296975] [2022-11-18 19:57:30,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:30,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 19:57:30,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:30,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 19:57:30,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=407, Unknown=16, NotChecked=42, Total=552 [2022-11-18 19:57:30,301 INFO L87 Difference]: Start difference. First operand 228 states and 275 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 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 19:57:39,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:39,985 INFO L93 Difference]: Finished difference Result 354 states and 443 transitions. [2022-11-18 19:57:39,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:57:39,986 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 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) Word has length 61 [2022-11-18 19:57:39,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:39,988 INFO L225 Difference]: With dead ends: 354 [2022-11-18 19:57:39,988 INFO L226 Difference]: Without dead ends: 350 [2022-11-18 19:57:39,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=237, Invalid=1081, Unknown=18, NotChecked=70, Total=1406 [2022-11-18 19:57:39,989 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 41 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:39,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 86 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 121 Invalid, 0 Unknown, 255 Unchecked, 0.3s Time] [2022-11-18 19:57:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-18 19:57:40,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 317. [2022-11-18 19:57:40,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.2626582278481013) internal successors, (399), 316 states have internal predecessors, (399), 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 19:57:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 399 transitions. [2022-11-18 19:57:40,175 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 399 transitions. Word has length 61 [2022-11-18 19:57:40,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:40,175 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 399 transitions. [2022-11-18 19:57:40,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 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 19:57:40,176 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 399 transitions. [2022-11-18 19:57:40,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 19:57:40,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:40,177 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:40,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:40,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:40,383 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:57:40,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:40,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1221758394, now seen corresponding path program 4 times [2022-11-18 19:57:40,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:40,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865884466] [2022-11-18 19:57:40,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:40,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:40,399 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:57:40,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407053481] [2022-11-18 19:57:40,400 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:57:40,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:40,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:40,401 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:40,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 19:57:40,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:57:40,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:57:40,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 19:57:40,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:40,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 19:57:40,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-18 19:57:40,955 INFO L321 Elim1Store]: treesize reduction 24, result has 47.8 percent of original size [2022-11-18 19:57:40,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 37 [2022-11-18 19:57:41,259 INFO L321 Elim1Store]: treesize reduction 24, result has 47.8 percent of original size [2022-11-18 19:57:41,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 52 [2022-11-18 19:57:41,458 INFO L321 Elim1Store]: treesize reduction 24, result has 47.8 percent of original size [2022-11-18 19:57:41,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 52 [2022-11-18 19:57:41,590 INFO L321 Elim1Store]: treesize reduction 24, result has 47.8 percent of original size [2022-11-18 19:57:41,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 52 [2022-11-18 19:57:41,686 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:57:41,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 36 [2022-11-18 19:57:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 18 proven. 41 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-18 19:57:42,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:52,731 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_641| Int) (v_ArrVal_2015 Int) (v_ArrVal_2017 Int) (|v_ULTIMATE.start_main_~i~0#1_647| Int)) (let ((.cse0 (+ |v_ULTIMATE.start_main_~i~0#1_641| 1))) (or (= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_2015) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_647| 4)) v_ArrVal_2017) (+ (* |v_ULTIMATE.start_main_~i~0#1_641| 4) |c_ULTIMATE.start_main_~a~0#1.offset|)) 1) (< |v_ULTIMATE.start_main_~i~0#1_641| (+ |v_ULTIMATE.start_main_~i~0#1_647| 4)) (< |c_ULTIMATE.start_main_~i~0#1| .cse0) (< .cse0 |c_ULTIMATE.start_main_~i~0#1|)))) is different from false [2022-11-18 19:57:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 30 proven. 40 refuted. 0 times theorem prover too weak. 67 trivial. 1 not checked. [2022-11-18 19:57:56,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:56,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865884466] [2022-11-18 19:57:56,656 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:57:56,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407053481] [2022-11-18 19:57:56,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407053481] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:56,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:57:56,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 25 [2022-11-18 19:57:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482269200] [2022-11-18 19:57:56,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:56,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 19:57:56,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:56,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 19:57:56,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=444, Unknown=5, NotChecked=44, Total=600 [2022-11-18 19:57:56,659 INFO L87 Difference]: Start difference. First operand 317 states and 399 transitions. Second operand has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 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 19:57:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:59,551 INFO L93 Difference]: Finished difference Result 377 states and 478 transitions. [2022-11-18 19:57:59,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:57:59,552 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 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) Word has length 61 [2022-11-18 19:57:59,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:59,554 INFO L225 Difference]: With dead ends: 377 [2022-11-18 19:57:59,554 INFO L226 Difference]: Without dead ends: 299 [2022-11-18 19:57:59,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 91 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=158, Invalid=653, Unknown=5, NotChecked=54, Total=870 [2022-11-18 19:57:59,555 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:59,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 48 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 201 Unchecked, 0.3s Time] [2022-11-18 19:57:59,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-18 19:57:59,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 292. [2022-11-18 19:57:59,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.254295532646048) internal successors, (365), 291 states have internal predecessors, (365), 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 19:57:59,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 365 transitions. [2022-11-18 19:57:59,699 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 365 transitions. Word has length 61 [2022-11-18 19:57:59,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:59,699 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 365 transitions. [2022-11-18 19:57:59,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 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 19:57:59,700 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 365 transitions. [2022-11-18 19:57:59,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-18 19:57:59,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:59,700 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:59,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:59,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 19:57:59,902 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:57:59,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:59,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1549104648, now seen corresponding path program 17 times [2022-11-18 19:57:59,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:59,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66761296] [2022-11-18 19:57:59,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:59,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 19:58:00,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:00,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66761296] [2022-11-18 19:58:00,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66761296] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:00,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165405027] [2022-11-18 19:58:00,701 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:58:00,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:00,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:00,707 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:00,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-18 19:58:01,641 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-18 19:58:01,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:58:01,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:58:01,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 19:58:02,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:02,786 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 19:58:02,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165405027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:02,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:58:02,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2022-11-18 19:58:02,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779773908] [2022-11-18 19:58:02,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:02,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:58:02,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:02,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:58:02,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:58:02,788 INFO L87 Difference]: Start difference. First operand 292 states and 365 transitions. Second operand has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 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 19:58:04,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:04,952 INFO L93 Difference]: Finished difference Result 362 states and 455 transitions. [2022-11-18 19:58:04,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:58:04,953 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 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) Word has length 63 [2022-11-18 19:58:04,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:04,954 INFO L225 Difference]: With dead ends: 362 [2022-11-18 19:58:04,954 INFO L226 Difference]: Without dead ends: 326 [2022-11-18 19:58:04,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 103 SyntacticMatches, 14 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=352, Invalid=1208, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 19:58:04,955 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 176 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:04,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 34 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:58:04,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-18 19:58:05,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 165. [2022-11-18 19:58:05,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.1951219512195121) internal successors, (196), 164 states have internal predecessors, (196), 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 19:58:05,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 196 transitions. [2022-11-18 19:58:05,075 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 196 transitions. Word has length 63 [2022-11-18 19:58:05,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:05,076 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 196 transitions. [2022-11-18 19:58:05,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 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 19:58:05,076 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 196 transitions. [2022-11-18 19:58:05,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 19:58:05,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:05,077 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:05,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:05,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-18 19:58:05,286 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:58:05,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:05,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1437404093, now seen corresponding path program 18 times [2022-11-18 19:58:05,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:05,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912614902] [2022-11-18 19:58:05,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:05,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 54 proven. 52 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 19:58:06,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:06,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912614902] [2022-11-18 19:58:06,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912614902] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:06,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043250296] [2022-11-18 19:58:06,004 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:58:06,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:06,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:06,005 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:06,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-18 19:58:06,490 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-11-18 19:58:06,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:58:06,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:58:06,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:07,341 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 70 proven. 36 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 19:58:07,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 70 proven. 36 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 19:58:07,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043250296] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:07,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:58:07,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2022-11-18 19:58:07,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911367709] [2022-11-18 19:58:07,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:07,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:58:07,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:07,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:58:07,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:58:07,998 INFO L87 Difference]: Start difference. First operand 165 states and 196 transitions. Second operand has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 26 states have internal predecessors, (76), 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 19:58:09,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:09,247 INFO L93 Difference]: Finished difference Result 296 states and 360 transitions. [2022-11-18 19:58:09,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:58:09,247 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 26 states have internal predecessors, (76), 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) Word has length 64 [2022-11-18 19:58:09,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:09,248 INFO L225 Difference]: With dead ends: 296 [2022-11-18 19:58:09,248 INFO L226 Difference]: Without dead ends: 158 [2022-11-18 19:58:09,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 105 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 19:58:09,250 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 237 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:09,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 35 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:58:09,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-18 19:58:09,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 124. [2022-11-18 19:58:09,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.2195121951219512) internal successors, (150), 123 states have internal predecessors, (150), 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 19:58:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 150 transitions. [2022-11-18 19:58:09,302 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 150 transitions. Word has length 64 [2022-11-18 19:58:09,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:09,303 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 150 transitions. [2022-11-18 19:58:09,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 26 states have internal predecessors, (76), 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 19:58:09,303 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 150 transitions. [2022-11-18 19:58:09,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 19:58:09,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:09,304 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:09,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:09,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:09,512 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:58:09,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:09,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1442778319, now seen corresponding path program 19 times [2022-11-18 19:58:09,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:09,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543784867] [2022-11-18 19:58:09,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:09,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-18 19:58:14,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:14,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543784867] [2022-11-18 19:58:14,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543784867] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:14,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891948721] [2022-11-18 19:58:14,904 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:58:14,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:14,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:14,905 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:14,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-18 19:58:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:15,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 108 conjunts are in the unsatisfiable core [2022-11-18 19:58:15,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:15,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:15,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 19:58:15,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:16,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:16,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:16,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:16,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:16,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:17,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:17,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:17,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:18,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:18,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:18,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:18,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:18,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:18,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 19:58:19,255 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:58:19,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 41 [2022-11-18 19:58:19,933 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 19:58:19,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 59 [2022-11-18 19:58:20,625 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:58:20,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 43 [2022-11-18 19:58:21,253 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:58:21,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 19:58:21,912 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:58:21,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2022-11-18 19:58:22,642 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:58:22,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2022-11-18 19:58:23,031 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:58:23,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 30 [2022-11-18 19:58:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 19:58:23,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:34,084 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2318 (Array Int Int)) (|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_731| Int) (|v_ULTIMATE.start_main_~i~0#1_737| Int) (|v_ULTIMATE.start_main_~i~0#1_729| Int) (|v_ULTIMATE.start_main_~i~0#1_739| Int) (|v_ULTIMATE.start_main_~i~0#1_733| Int) (|v_ULTIMATE.start_main_~i~0#1_735| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2318))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse3 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse7 (select v_ArrVal_2318 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse6 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_739| 4))))) (let ((.cse4 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_737| 4))))) (let ((.cse5 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_735| 4))))) (let ((.cse2 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse5 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_733| 4))))) (let ((.cse1 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse4 .cse5 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_731| 4) |ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse0 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse1 .cse3 .cse4 .cse5 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_729| 4))))) (or (not (= .cse0 2)) (not (= .cse1 2)) (= (* c_~N~0 2) (+ .cse2 .cse1 .cse3 .cse0 .cse4 .cse5 .cse6 .cse7)) (not (= 2 .cse5)) (not (= 2 .cse4)) (not (= 2 .cse7)) (not (= .cse2 2)) (not (= 2 .cse6))))))))))))) is different from false [2022-11-18 19:59:56,818 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 19:59:56,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 7859 treesize of output 1 [2022-11-18 19:59:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 57 trivial. 13 not checked. [2022-11-18 19:59:56,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891948721] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:56,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:59:56,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 29, 28] total 85 [2022-11-18 19:59:56,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766964819] [2022-11-18 19:59:56,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:56,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-11-18 19:59:56,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:56,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-11-18 19:59:56,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=6606, Unknown=29, NotChecked=164, Total=7140 [2022-11-18 19:59:56,827 INFO L87 Difference]: Start difference. First operand 124 states and 150 transitions. Second operand has 85 states, 85 states have (on average 1.6588235294117648) internal successors, (141), 85 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:33,157 WARN L233 SmtUtils]: Spent 22.08s on a formula simplification. DAG size of input: 108 DAG size of output: 94 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:01:18,675 WARN L233 SmtUtils]: Spent 35.78s on a formula simplification. DAG size of input: 105 DAG size of output: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:01:28,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:28,150 INFO L93 Difference]: Finished difference Result 261 states and 323 transitions. [2022-11-18 20:01:28,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:01:28,150 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.6588235294117648) internal successors, (141), 85 states have internal predecessors, (141), 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) Word has length 69 [2022-11-18 20:01:28,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:28,151 INFO L225 Difference]: With dead ends: 261 [2022-11-18 20:01:28,151 INFO L226 Difference]: Without dead ends: 257 [2022-11-18 20:01:28,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 108 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3238 ImplicationChecksByTransitivity, 178.3s TimeCoverageRelationStatistics Valid=722, Invalid=11024, Unknown=30, NotChecked=214, Total=11990 [2022-11-18 20:01:28,153 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 85 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1163 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:28,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 256 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 776 Invalid, 0 Unknown, 1163 Unchecked, 1.4s Time] [2022-11-18 20:01:28,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-18 20:01:28,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 240. [2022-11-18 20:01:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.2384937238493723) internal successors, (296), 239 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 296 transitions. [2022-11-18 20:01:28,253 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 296 transitions. Word has length 69 [2022-11-18 20:01:28,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:28,254 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 296 transitions. [2022-11-18 20:01:28,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.6588235294117648) internal successors, (141), 85 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 296 transitions. [2022-11-18 20:01:28,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:01:28,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:28,255 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:28,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-11-18 20:01:28,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:28,460 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:28,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1385520017, now seen corresponding path program 10 times [2022-11-18 20:01:28,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:28,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815397288] [2022-11-18 20:01:28,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:28,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:28,479 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:28,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646932672] [2022-11-18 20:01:28,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:01:28,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:28,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:28,480 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:28,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-18 20:01:28,750 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:01:28,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:01:28,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-18 20:01:28,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:28,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:01:29,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-18 20:01:29,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:29,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:29,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:29,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:29,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:29,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:30,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 20:01:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 13 proven. 127 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 20:01:30,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:30,253 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2439 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2439) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2)) is different from false [2022-11-18 20:01:30,270 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2439 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2439) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2)) is different from false [2022-11-18 20:01:30,436 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2439 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2439) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2)) is different from false [2022-11-18 20:01:30,608 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2439 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2439) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 24)) 2)) is different from false [2022-11-18 20:01:30,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2022-11-18 20:01:30,862 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:01:30,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 40 [2022-11-18 20:01:31,099 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 13 proven. 79 refuted. 0 times theorem prover too weak. 49 trivial. 48 not checked. [2022-11-18 20:01:31,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:31,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815397288] [2022-11-18 20:01:31,099 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:31,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646932672] [2022-11-18 20:01:31,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646932672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:31,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:01:31,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2022-11-18 20:01:31,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115401024] [2022-11-18 20:01:31,100 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:31,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:01:31,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:31,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:01:31,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=561, Unknown=5, NotChecked=204, Total=870 [2022-11-18 20:01:31,102 INFO L87 Difference]: Start difference. First operand 240 states and 296 transitions. Second operand has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 30 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:34,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:34,040 INFO L93 Difference]: Finished difference Result 470 states and 594 transitions. [2022-11-18 20:01:34,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 20:01:34,041 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 30 states have internal predecessors, (79), 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) Word has length 69 [2022-11-18 20:01:34,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:34,042 INFO L225 Difference]: With dead ends: 470 [2022-11-18 20:01:34,042 INFO L226 Difference]: Without dead ends: 458 [2022-11-18 20:01:34,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 106 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=146, Invalid=795, Unknown=5, NotChecked=244, Total=1190 [2022-11-18 20:01:34,043 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 184 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 619 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:34,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 91 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1233 Invalid, 0 Unknown, 619 Unchecked, 2.2s Time] [2022-11-18 20:01:34,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-18 20:01:34,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 374. [2022-11-18 20:01:34,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.2493297587131367) internal successors, (466), 373 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:34,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 466 transitions. [2022-11-18 20:01:34,208 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 466 transitions. Word has length 69 [2022-11-18 20:01:34,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:34,208 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 466 transitions. [2022-11-18 20:01:34,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 30 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:34,208 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 466 transitions. [2022-11-18 20:01:34,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:01:34,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:34,209 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:34,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:34,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:34,410 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:34,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:34,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1184612881, now seen corresponding path program 11 times [2022-11-18 20:01:34,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:34,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603047899] [2022-11-18 20:01:34,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:34,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:34,429 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:34,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921610317] [2022-11-18 20:01:34,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:01:34,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:34,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:34,431 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:34,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-18 20:01:36,547 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-18 20:01:36,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:01:36,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 20:01:36,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:36,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:01:37,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2022-11-18 20:01:37,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:37,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:01:37,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:37,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:01:37,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:37,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:37,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:37,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:37,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:01:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 39 proven. 94 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-18 20:01:37,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:38,077 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2548 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2548) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2)) is different from false [2022-11-18 20:01:38,270 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2548 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2548) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 16 |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2022-11-18 20:01:38,291 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2548 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2548) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2022-11-18 20:01:40,655 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2548 (Array Int Int)) (v_ArrVal_2541 Int) (v_ArrVal_2544 Int) (|v_ULTIMATE.start_main_~i~0#1_817| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_817|)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_2541) (+ (* |v_ULTIMATE.start_main_~i~0#1_817| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_2544)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2548) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2))) is different from false [2022-11-18 20:01:42,713 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_818| Int)) (or (forall ((v_ArrVal_2548 (Array Int Int)) (v_ArrVal_2541 Int) (v_ArrVal_2544 Int) (|v_ULTIMATE.start_main_~i~0#1_817| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_818| 1) |v_ULTIMATE.start_main_~i~0#1_817|)) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_818| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_2541) (+ (* |v_ULTIMATE.start_main_~i~0#1_817| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_2544)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2548) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_818|)))) is different from false [2022-11-18 20:01:44,919 INFO L321 Elim1Store]: treesize reduction 94, result has 29.3 percent of original size [2022-11-18 20:01:44,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 61 treesize of output 55 [2022-11-18 20:01:44,935 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:01:44,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2022-11-18 20:01:44,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 20:01:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 37 proven. 49 refuted. 0 times theorem prover too weak. 56 trivial. 47 not checked. [2022-11-18 20:01:45,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:45,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603047899] [2022-11-18 20:01:45,483 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:45,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921610317] [2022-11-18 20:01:45,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921610317] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:45,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:01:45,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 38 [2022-11-18 20:01:45,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012927282] [2022-11-18 20:01:45,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:45,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 20:01:45,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:45,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 20:01:45,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=905, Unknown=15, NotChecked=330, Total=1406 [2022-11-18 20:01:45,485 INFO L87 Difference]: Start difference. First operand 374 states and 466 transitions. Second operand has 38 states, 38 states have (on average 2.473684210526316) internal successors, (94), 38 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:48,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:48,239 INFO L93 Difference]: Finished difference Result 623 states and 785 transitions. [2022-11-18 20:01:48,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:01:48,239 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.473684210526316) internal successors, (94), 38 states have internal predecessors, (94), 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) Word has length 69 [2022-11-18 20:01:48,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:48,241 INFO L225 Difference]: With dead ends: 623 [2022-11-18 20:01:48,241 INFO L226 Difference]: Without dead ends: 605 [2022-11-18 20:01:48,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 101 SyntacticMatches, 13 SemanticMatches, 37 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=168, Invalid=959, Unknown=15, NotChecked=340, Total=1482 [2022-11-18 20:01:48,242 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 176 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 840 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:48,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 130 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1049 Invalid, 0 Unknown, 840 Unchecked, 2.0s Time] [2022-11-18 20:01:48,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-11-18 20:01:48,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 530. [2022-11-18 20:01:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 1.2514177693761814) internal successors, (662), 529 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:48,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 662 transitions. [2022-11-18 20:01:48,524 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 662 transitions. Word has length 69 [2022-11-18 20:01:48,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:48,524 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 662 transitions. [2022-11-18 20:01:48,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.473684210526316) internal successors, (94), 38 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:48,525 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 662 transitions. [2022-11-18 20:01:48,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:01:48,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:48,526 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:48,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:48,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-18 20:01:48,734 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:48,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:48,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2028618383, now seen corresponding path program 5 times [2022-11-18 20:01:48,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:48,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718787479] [2022-11-18 20:01:48,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:48,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:48,752 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:48,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109477001] [2022-11-18 20:01:48,753 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:01:48,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:48,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:48,754 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:48,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-18 20:01:50,977 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-18 20:01:50,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:01:50,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-18 20:01:50,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:51,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:01:51,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-18 20:01:51,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:51,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:01:51,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:51,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:01:51,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:51,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:01:51,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:51,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:01:51,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:51,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:01:51,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:01:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 37 proven. 75 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-18 20:01:51,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:53,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2022-11-18 20:01:53,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2022-11-18 20:01:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 37 proven. 74 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-18 20:01:53,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:53,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718787479] [2022-11-18 20:01:53,498 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:53,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109477001] [2022-11-18 20:01:53,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109477001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:53,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:01:53,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 30 [2022-11-18 20:01:53,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059651041] [2022-11-18 20:01:53,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:53,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:01:53,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:53,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:01:53,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:01:53,501 INFO L87 Difference]: Start difference. First operand 530 states and 662 transitions. Second operand has 30 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:56,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:56,765 INFO L93 Difference]: Finished difference Result 600 states and 749 transitions. [2022-11-18 20:01:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:01:56,766 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 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) Word has length 69 [2022-11-18 20:01:56,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:56,767 INFO L225 Difference]: With dead ends: 600 [2022-11-18 20:01:56,767 INFO L226 Difference]: Without dead ends: 338 [2022-11-18 20:01:56,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 106 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=211, Invalid=1681, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 20:01:56,768 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 81 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:56,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 104 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 879 Invalid, 0 Unknown, 88 Unchecked, 1.6s Time] [2022-11-18 20:01:56,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-18 20:01:56,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 337. [2022-11-18 20:01:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.2083333333333333) internal successors, (406), 336 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 406 transitions. [2022-11-18 20:01:56,919 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 406 transitions. Word has length 69 [2022-11-18 20:01:56,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:56,920 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 406 transitions. [2022-11-18 20:01:56,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 406 transitions. [2022-11-18 20:01:56,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-18 20:01:56,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:56,921 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:56,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:57,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-18 20:01:57,132 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:57,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:57,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1280521331, now seen corresponding path program 20 times [2022-11-18 20:01:57,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:57,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256234934] [2022-11-18 20:01:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:57,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 36 proven. 98 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 20:01:57,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:57,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256234934] [2022-11-18 20:01:57,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256234934] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:01:57,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089501049] [2022-11-18 20:01:57,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:01:57,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:57,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:57,983 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:57,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-18 20:01:58,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:01:58,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:01:58,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:01:58,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 49 proven. 85 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 20:01:58,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 49 proven. 85 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 20:01:59,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089501049] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:59,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:01:59,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2022-11-18 20:01:59,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863339400] [2022-11-18 20:01:59,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:59,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 20:01:59,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:59,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 20:01:59,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:01:59,449 INFO L87 Difference]: Start difference. First operand 337 states and 406 transitions. Second operand has 29 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 29 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:02,519 INFO L93 Difference]: Finished difference Result 456 states and 551 transitions. [2022-11-18 20:02:02,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:02:02,519 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 29 states have internal predecessors, (83), 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) Word has length 71 [2022-11-18 20:02:02,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:02,521 INFO L225 Difference]: With dead ends: 456 [2022-11-18 20:02:02,522 INFO L226 Difference]: Without dead ends: 417 [2022-11-18 20:02:02,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 116 SyntacticMatches, 16 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=440, Invalid=1540, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 20:02:02,522 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 172 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:02,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 43 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 20:02:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-11-18 20:02:02,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 278. [2022-11-18 20:02:02,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.2238267148014441) internal successors, (339), 277 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 339 transitions. [2022-11-18 20:02:02,671 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 339 transitions. Word has length 71 [2022-11-18 20:02:02,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:02,672 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 339 transitions. [2022-11-18 20:02:02,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 29 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:02,672 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 339 transitions. [2022-11-18 20:02:02,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:02:02,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:02,673 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:02,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:02,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:02,883 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:02,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:02,884 INFO L85 PathProgramCache]: Analyzing trace with hash -532131352, now seen corresponding path program 21 times [2022-11-18 20:02:02,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:02,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671471950] [2022-11-18 20:02:02,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:02,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 73 proven. 68 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 20:02:03,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:03,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671471950] [2022-11-18 20:02:03,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671471950] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:02:03,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394874145] [2022-11-18 20:02:03,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:02:03,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:03,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:03,603 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:03,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-18 20:02:04,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-18 20:02:04,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:02:04,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:02:04,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 92 proven. 49 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 20:02:05,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 92 proven. 49 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 20:02:05,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394874145] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:05,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:02:05,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2022-11-18 20:02:05,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129130255] [2022-11-18 20:02:05,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:05,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 20:02:05,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:05,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 20:02:05,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:02:05,848 INFO L87 Difference]: Start difference. First operand 278 states and 339 transitions. Second operand has 29 states, 29 states have (on average 2.896551724137931) internal successors, (84), 29 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:07,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:07,159 INFO L93 Difference]: Finished difference Result 436 states and 525 transitions. [2022-11-18 20:02:07,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:02:07,160 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.896551724137931) internal successors, (84), 29 states have internal predecessors, (84), 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) Word has length 72 [2022-11-18 20:02:07,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:07,161 INFO L225 Difference]: With dead ends: 436 [2022-11-18 20:02:07,161 INFO L226 Difference]: Without dead ends: 211 [2022-11-18 20:02:07,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 118 SyntacticMatches, 16 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 20:02:07,162 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 209 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:07,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 39 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:02:07,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-18 20:02:07,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 182. [2022-11-18 20:02:07,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.2044198895027625) internal successors, (218), 181 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:07,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 218 transitions. [2022-11-18 20:02:07,248 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 218 transitions. Word has length 72 [2022-11-18 20:02:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:07,249 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 218 transitions. [2022-11-18 20:02:07,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.896551724137931) internal successors, (84), 29 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:07,249 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 218 transitions. [2022-11-18 20:02:07,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 20:02:07,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:07,250 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:07,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:07,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:07,457 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:07,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:07,457 INFO L85 PathProgramCache]: Analyzing trace with hash -733100262, now seen corresponding path program 22 times [2022-11-18 20:02:07,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:07,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747513047] [2022-11-18 20:02:07,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:07,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-18 20:02:13,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:13,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747513047] [2022-11-18 20:02:13,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747513047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:02:13,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751956345] [2022-11-18 20:02:13,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:02:13,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:13,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:13,165 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:02:13,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1445edae-39ca-45d9-8c78-1b123f7572f5/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-18 20:02:13,493 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:02:13,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:02:13,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-18 20:02:13,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:13,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:02:13,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:02:13,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:13,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:14,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:14,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:14,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:14,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:14,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:14,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:15,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:15,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:16,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:16,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:16,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:16,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:17,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:17,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:02:17,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 20:02:18,175 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:02:18,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 20:02:18,695 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:02:18,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2022-11-18 20:02:19,250 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 20:02:19,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 58 [2022-11-18 20:02:19,848 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:02:19,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2022-11-18 20:02:20,442 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 20:02:20,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 60 [2022-11-18 20:02:21,112 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-18 20:02:21,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 120 treesize of output 76 [2022-11-18 20:02:21,780 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:02:21,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 20:02:22,134 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:02:22,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 32 [2022-11-18 20:02:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 70 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:22,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:04:10,544 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_972| Int) (|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_974| Int) (|v_ULTIMATE.start_main_~i~0#1_970| Int) (v_ArrVal_2994 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_968| Int) (|v_ULTIMATE.start_main_~i~0#1_976| Int) (|v_ULTIMATE.start_main_~i~0#1_978| Int) (|v_ULTIMATE.start_main_~i~0#1_966| Int)) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2994))) (let ((.cse10 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse7 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse8 (select v_ArrVal_2994 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse0 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_978| 4))))) (let ((.cse6 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse0 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_976| 4))))) (let ((.cse5 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse6 .cse7 .cse0 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_974| 4))))) (let ((.cse3 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse5 .cse6 .cse7 .cse0 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_972| 4))))) (let ((.cse2 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse5 .cse3 .cse6 .cse7 .cse0 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_970| 4))))) (let ((.cse4 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse5 .cse3 .cse6 .cse7 .cse0 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_968| 4))))) (let ((.cse1 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse2 .cse5 .cse3 .cse6 .cse7 .cse0 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_966| 4))))) (or (not (= 2 .cse0)) (not (= 2 .cse1)) (not (= .cse2 2)) (not (= .cse3 2)) (= (* c_~N~0 2) (+ .cse4 .cse2 .cse5 .cse3 .cse6 .cse7 .cse0 .cse8 .cse1)) (not (= .cse5 2)) (not (= .cse4 2)) (not (= 2 .cse8)) (not (= .cse6 2)))))))))))))) is different from false [2022-11-18 20:04:12,161 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~i~0#1_972| Int) (|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_974| Int) (|v_ULTIMATE.start_main_~i~0#1_970| Int) (v_ArrVal_2994 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_968| Int) (|v_ULTIMATE.start_main_~i~0#1_976| Int) (|v_ULTIMATE.start_main_~i~0#1_978| Int) (|v_ULTIMATE.start_main_~i~0#1_966| Int)) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2994))) (let ((.cse10 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse7 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse8 (select v_ArrVal_2994 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse0 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_978| 4))))) (let ((.cse6 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse0 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_976| 4))))) (let ((.cse5 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse6 .cse7 .cse0 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_974| 4))))) (let ((.cse3 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse5 .cse6 .cse7 .cse0 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_972| 4))))) (let ((.cse2 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse5 .cse3 .cse6 .cse7 .cse0 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_970| 4))))) (let ((.cse4 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse5 .cse3 .cse6 .cse7 .cse0 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_968| 4))))) (let ((.cse1 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse2 .cse5 .cse3 .cse6 .cse7 .cse0 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_966| 4))))) (or (not (= 2 .cse0)) (not (= 2 .cse1)) (not (= .cse2 2)) (not (= .cse3 2)) (= (* c_~N~0 2) (+ .cse4 .cse2 .cse5 .cse3 .cse6 .cse7 .cse0 .cse8 .cse1)) (not (= .cse5 2)) (not (= .cse4 2)) (not (= 2 .cse8)) (not (= .cse6 2)))))))))))))) (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0))) is different from false