./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/prod4br-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench/prod4br-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9fc373a278835802938e4c08f2544f1651ce1de6dc177c0a58501e43687c477d --- 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-dbf71c6-m [2022-10-17 16:54:46,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:54:46,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:54:46,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:54:46,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:54:46,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:54:46,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:54:46,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:54:46,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:54:46,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:54:46,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:54:46,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:54:46,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:54:46,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:54:46,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:54:46,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:54:46,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:54:46,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:54:46,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:54:46,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:54:46,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:54:46,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:54:46,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:54:46,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:54:46,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:54:46,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:54:46,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:54:46,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:54:46,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:54:46,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:54:46,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:54:46,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:54:46,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:54:46,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:54:46,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:54:46,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:54:46,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:54:46,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:54:46,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:54:46,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:54:46,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:54:46,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-10-17 16:54:46,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:54:46,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:54:46,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 16:54:46,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-10-17 16:54:46,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:54:46,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:54:46,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:54:46,756 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:54:46,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:54:46,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:54:46,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:54:46,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 16:54:46,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:54:46,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 16:54:46,759 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:54:46,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 16:54:46,759 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:54:46,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 16:54:46,760 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:54:46,760 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:54:46,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:54:46,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:54:46,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:54:46,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:54:46,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 16:54:46,761 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:54:46,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:54:46,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 16:54:46,762 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_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fc373a278835802938e4c08f2544f1651ce1de6dc177c0a58501e43687c477d [2022-10-17 16:54:47,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:54:47,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:54:47,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:54:47,080 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:54:47,082 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:54:47,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/nla-digbench/prod4br-ll.c [2022-10-17 16:54:47,152 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB/data/51937a6b8/52d72616269740f2848354746282ceb4/FLAG3534d4f64 [2022-10-17 16:54:47,632 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:54:47,632 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/sv-benchmarks/c/nla-digbench/prod4br-ll.c [2022-10-17 16:54:47,640 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB/data/51937a6b8/52d72616269740f2848354746282ceb4/FLAG3534d4f64 [2022-10-17 16:54:47,993 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB/data/51937a6b8/52d72616269740f2848354746282ceb4 [2022-10-17 16:54:47,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:54:47,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:54:47,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:54:47,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:54:48,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:54:48,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:54:47" (1/1) ... [2022-10-17 16:54:48,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62cdc4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:54:48, skipping insertion in model container [2022-10-17 16:54:48,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:54:47" (1/1) ... [2022-10-17 16:54:48,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:54:48,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:54:48,218 WARN L230 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_ae069f20-d50f-450c-b0f1-84221237d384/sv-benchmarks/c/nla-digbench/prod4br-ll.c[524,537] [2022-10-17 16:54:48,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:54:48,246 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:54:48,258 WARN L230 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_ae069f20-d50f-450c-b0f1-84221237d384/sv-benchmarks/c/nla-digbench/prod4br-ll.c[524,537] [2022-10-17 16:54:48,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:54:48,279 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:54:48,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:54:48 WrapperNode [2022-10-17 16:54:48,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:54:48,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:54:48,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:54:48,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:54:48,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:54:48" (1/1) ... [2022-10-17 16:54:48,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:54:48" (1/1) ... [2022-10-17 16:54:48,316 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2022-10-17 16:54:48,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:54:48,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:54:48,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:54:48,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:54:48,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:54:48" (1/1) ... [2022-10-17 16:54:48,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:54:48" (1/1) ... [2022-10-17 16:54:48,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:54:48" (1/1) ... [2022-10-17 16:54:48,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:54:48" (1/1) ... [2022-10-17 16:54:48,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:54:48" (1/1) ... [2022-10-17 16:54:48,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:54:48" (1/1) ... [2022-10-17 16:54:48,338 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:54:48" (1/1) ... [2022-10-17 16:54:48,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:54:48" (1/1) ... [2022-10-17 16:54:48,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:54:48,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:54:48,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:54:48,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:54:48,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:54:48" (1/1) ... [2022-10-17 16:54:48,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:54:48,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:54:48,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:54:48,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae069f20-d50f-450c-b0f1-84221237d384/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:54:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:54:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:54:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:54:48,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:54:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 16:54:48,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 16:54:48,473 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:54:48,475 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:54:48,727 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:54:48,831 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:54:48,831 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 16:54:48,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:54:48 BoogieIcfgContainer [2022-10-17 16:54:48,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:54:48,835 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:54:48,835 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:54:48,845 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:54:48,846 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:54:48" (1/1) ... [2022-10-17 16:54:48,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:54:48,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:54:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 14 states and 18 transitions. [2022-10-17 16:54:48,965 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2022-10-17 16:54:48,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 16:54:48,967 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:54:48,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:54:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:54:49,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 16:54:49,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 16:54:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:54:49,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:54:49,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 25 transitions. [2022-10-17 16:54:49,459 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2022-10-17 16:54:49,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 16:54:49,463 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:54:49,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:54:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:54:49,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 16:54:49,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 16:54:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:54:50,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:54:50,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 24 states and 41 transitions. [2022-10-17 16:54:50,699 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 41 transitions. [2022-10-17 16:54:50,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 16:54:50,700 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:54:50,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:54:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:54:50,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-17 16:54:50,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 16:54:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:55:00,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 7.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-10-17 16:55:01,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:55:01,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 27 states and 49 transitions. [2022-10-17 16:55:01,175 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 49 transitions. [2022-10-17 16:55:01,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 16:55:01,177 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:55:01,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:55:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:55:01,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 16:55:01,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 16:55:01,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 16:55:01,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:55:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 29 states and 56 transitions. [2022-10-17 16:55:01,718 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 56 transitions. [2022-10-17 16:55:01,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 16:55:01,719 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:55:01,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:55:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:55:01,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 16:55:01,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 16:55:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 16:55:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:55:11,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 30 states and 61 transitions. [2022-10-17 16:55:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 61 transitions. [2022-10-17 16:55:11,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 16:55:11,577 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:55:11,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:55:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:55:12,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-17 16:55:12,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 16:55:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 16:55:24,631 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 65 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)