./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 8880bc6b55ab6b26a36a9709c52577c78f4355aea8bee56c9643da00ec93f3ee --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:56:47,573 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:56:47,640 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:56:47,645 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:56:47,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:56:47,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:56:47,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:56:47,671 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:56:47,672 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:56:47,672 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:56:47,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:56:47,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:56:47,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:56:47,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:56:47,694 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:56:47,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:56:47,697 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:56:47,698 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:56:47,698 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:56:47,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:56:47,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:56:47,700 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:56:47,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:56:47,701 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:56:47,701 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:56:47,702 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:56:47,702 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:56:47,703 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:56:47,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:56:47,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:56:47,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:56:47,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:56:47,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:56:47,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:56:47,707 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:56:47,707 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:56:47,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:56:47,707 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:56:47,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:56:47,708 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:56:47,708 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:56:47,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:56:47,709 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8880bc6b55ab6b26a36a9709c52577c78f4355aea8bee56c9643da00ec93f3ee [2023-11-26 11:56:47,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:56:47,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:56:48,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:56:48,002 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:56:48,003 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:56:48,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i [2023-11-26 11:56:51,151 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:56:51,480 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:56:51,481 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i [2023-11-26 11:56:51,496 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/data/a320ea35b/9d48cd4c669d4460946ed85dd4fb638b/FLAG25a1baa67 [2023-11-26 11:56:51,513 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/data/a320ea35b/9d48cd4c669d4460946ed85dd4fb638b [2023-11-26 11:56:51,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:56:51,522 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:56:51,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:56:51,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:56:51,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:56:51,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:56:51" (1/1) ... [2023-11-26 11:56:51,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef9e06f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:51, skipping insertion in model container [2023-11-26 11:56:51,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:56:51" (1/1) ... [2023-11-26 11:56:51,592 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:56:51,796 WARN L240 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_cec1294d-a415-42c5-adae-97b1b0db3852/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i[919,932] [2023-11-26 11:56:51,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:56:51,974 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:56:51,993 WARN L240 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_cec1294d-a415-42c5-adae-97b1b0db3852/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i[919,932] [2023-11-26 11:56:52,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:56:52,095 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:56:52,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:52 WrapperNode [2023-11-26 11:56:52,096 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:56:52,097 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:56:52,098 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:56:52,098 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:56:52,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:52" (1/1) ... [2023-11-26 11:56:52,134 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:52" (1/1) ... [2023-11-26 11:56:52,201 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 314 [2023-11-26 11:56:52,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:56:52,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:56:52,203 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:56:52,203 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:56:52,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:52" (1/1) ... [2023-11-26 11:56:52,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:52" (1/1) ... [2023-11-26 11:56:52,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:52" (1/1) ... [2023-11-26 11:56:52,260 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:56:52,270 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:52" (1/1) ... [2023-11-26 11:56:52,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:52" (1/1) ... [2023-11-26 11:56:52,289 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:52" (1/1) ... [2023-11-26 11:56:52,295 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:52" (1/1) ... [2023-11-26 11:56:52,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:52" (1/1) ... [2023-11-26 11:56:52,303 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:52" (1/1) ... [2023-11-26 11:56:52,332 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:56:52,333 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:56:52,333 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:56:52,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:56:52,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:52" (1/1) ... [2023-11-26 11:56:52,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:56:52,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:52,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:52,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:56:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:56:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:56:52,412 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:56:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:56:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:56:52,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:56:52,518 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:56:52,521 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:56:53,317 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:56:53,379 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:56:53,380 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:56:53,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:56:53 BoogieIcfgContainer [2023-11-26 11:56:53,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:56:53,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:56:53,385 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:56:53,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:56:53,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:56:51" (1/3) ... [2023-11-26 11:56:53,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df7ddd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:56:53, skipping insertion in model container [2023-11-26 11:56:53,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:52" (2/3) ... [2023-11-26 11:56:53,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df7ddd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:56:53, skipping insertion in model container [2023-11-26 11:56:53,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:56:53" (3/3) ... [2023-11-26 11:56:53,395 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-10.i [2023-11-26 11:56:53,418 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:56:53,418 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:56:53,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:56:53,504 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=LoopHeads, 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;@2f232005, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:56:53,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:56:53,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 80 states have (on average 1.5) internal successors, (120), 81 states have internal predecessors, (120), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-26 11:56:53,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-11-26 11:56:53,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:53,532 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:53,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:56:53,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:53,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1365754540, now seen corresponding path program 1 times [2023-11-26 11:56:53,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:53,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298027056] [2023-11-26 11:56:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:53,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:53,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:53,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298027056] [2023-11-26 11:56:53,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:56:53,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772776703] [2023-11-26 11:56:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:53,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:53,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:53,798 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:53,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:56:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:54,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:56:54,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-11-26 11:56:54,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:56:54,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772776703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:54,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:54,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:54,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753471353] [2023-11-26 11:56:54,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:54,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:56:54,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:54,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:56:54,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:56:54,238 INFO L87 Difference]: Start difference. First operand has 125 states, 80 states have (on average 1.5) internal successors, (120), 81 states have internal predecessors, (120), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2023-11-26 11:56:54,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:54,299 INFO L93 Difference]: Finished difference Result 247 states and 448 transitions. [2023-11-26 11:56:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:56:54,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) Word has length 259 [2023-11-26 11:56:54,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:54,312 INFO L225 Difference]: With dead ends: 247 [2023-11-26 11:56:54,312 INFO L226 Difference]: Without dead ends: 123 [2023-11-26 11:56:54,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:56:54,321 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:54,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:56:54,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-26 11:56:54,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-11-26 11:56:54,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 79 states have internal predecessors, (115), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-26 11:56:54,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 199 transitions. [2023-11-26 11:56:54,404 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 199 transitions. Word has length 259 [2023-11-26 11:56:54,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:54,407 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 199 transitions. [2023-11-26 11:56:54,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2023-11-26 11:56:54,408 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 199 transitions. [2023-11-26 11:56:54,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-11-26 11:56:54,418 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:54,419 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:54,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:54,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:56:54,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:56:54,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:54,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1300833268, now seen corresponding path program 1 times [2023-11-26 11:56:54,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:54,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384983909] [2023-11-26 11:56:54,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:54,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:54,758 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:56:54,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715779619] [2023-11-26 11:56:54,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:54,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:54,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:54,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:54,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:56:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:55,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:56:55,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-11-26 11:56:55,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:56:55,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:55,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384983909] [2023-11-26 11:56:55,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:56:55,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715779619] [2023-11-26 11:56:55,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715779619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:55,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:55,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:55,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933117842] [2023-11-26 11:56:55,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:55,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:55,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:55,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:55,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:55,531 INFO L87 Difference]: Start difference. First operand 123 states and 199 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-11-26 11:56:55,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:55,688 INFO L93 Difference]: Finished difference Result 341 states and 555 transitions. [2023-11-26 11:56:55,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:55,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 259 [2023-11-26 11:56:55,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:55,701 INFO L225 Difference]: With dead ends: 341 [2023-11-26 11:56:55,702 INFO L226 Difference]: Without dead ends: 219 [2023-11-26 11:56:55,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:55,710 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 42 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:55,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 377 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:56:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-26 11:56:55,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 203. [2023-11-26 11:56:55,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 116 states have (on average 1.3620689655172413) internal successors, (158), 116 states have internal predecessors, (158), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-26 11:56:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 326 transitions. [2023-11-26 11:56:55,786 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 326 transitions. Word has length 259 [2023-11-26 11:56:55,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:55,790 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 326 transitions. [2023-11-26 11:56:55,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-11-26 11:56:55,791 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 326 transitions. [2023-11-26 11:56:55,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-11-26 11:56:55,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:55,802 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:55,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:56,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:56,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:56:56,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:56,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1407550412, now seen corresponding path program 1 times [2023-11-26 11:56:56,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:56,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006394697] [2023-11-26 11:56:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:56,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:56,138 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:56:56,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057285021] [2023-11-26 11:56:56,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:56,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:56,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:56,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:56,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:56:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:56,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:56:56,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-11-26 11:56:57,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:56:57,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:57,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006394697] [2023-11-26 11:56:57,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:56:57,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057285021] [2023-11-26 11:56:57,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057285021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:57,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:57,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:56:57,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047699818] [2023-11-26 11:56:57,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:57,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:56:57,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:57,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:56:57,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:56:57,425 INFO L87 Difference]: Start difference. First operand 203 states and 326 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-11-26 11:56:57,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:57,552 INFO L93 Difference]: Finished difference Result 368 states and 593 transitions. [2023-11-26 11:56:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:56:57,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 259 [2023-11-26 11:56:57,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:57,559 INFO L225 Difference]: With dead ends: 368 [2023-11-26 11:56:57,559 INFO L226 Difference]: Without dead ends: 246 [2023-11-26 11:56:57,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:56:57,564 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 123 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:57,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 566 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:56:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-11-26 11:56:57,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 217. [2023-11-26 11:56:57,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 130 states have (on average 1.4) internal successors, (182), 130 states have internal predecessors, (182), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-26 11:56:57,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 350 transitions. [2023-11-26 11:56:57,632 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 350 transitions. Word has length 259 [2023-11-26 11:56:57,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:57,634 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 350 transitions. [2023-11-26 11:56:57,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-11-26 11:56:57,636 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 350 transitions. [2023-11-26 11:56:57,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-26 11:56:57,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:57,642 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:57,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:57,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:57,850 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:56:57,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:57,851 INFO L85 PathProgramCache]: Analyzing trace with hash -153584993, now seen corresponding path program 1 times [2023-11-26 11:56:57,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:57,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089553443] [2023-11-26 11:56:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:57,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:57,941 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:56:57,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428143493] [2023-11-26 11:56:57,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:57,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:57,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:57,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:57,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:56:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:58,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-26 11:56:58,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1777 proven. 249 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2023-11-26 11:56:59,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 102 proven. 258 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2023-11-26 11:57:01,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:01,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089553443] [2023-11-26 11:57:01,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:01,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428143493] [2023-11-26 11:57:01,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428143493] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:01,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:01,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2023-11-26 11:57:01,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385146608] [2023-11-26 11:57:01,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:01,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-26 11:57:01,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:01,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-26 11:57:01,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2023-11-26 11:57:01,316 INFO L87 Difference]: Start difference. First operand 217 states and 350 transitions. Second operand has 34 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 states have internal predecessors, (115), 7 states have call successors, (73), 4 states have call predecessors, (73), 9 states have return successors, (74), 7 states have call predecessors, (74), 7 states have call successors, (74) [2023-11-26 11:57:07,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:07,060 INFO L93 Difference]: Finished difference Result 598 states and 874 transitions. [2023-11-26 11:57:07,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-26 11:57:07,061 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 states have internal predecessors, (115), 7 states have call successors, (73), 4 states have call predecessors, (73), 9 states have return successors, (74), 7 states have call predecessors, (74), 7 states have call successors, (74) Word has length 260 [2023-11-26 11:57:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:07,067 INFO L225 Difference]: With dead ends: 598 [2023-11-26 11:57:07,067 INFO L226 Difference]: Without dead ends: 476 [2023-11-26 11:57:07,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2135 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2080, Invalid=6662, Unknown=0, NotChecked=0, Total=8742 [2023-11-26 11:57:07,073 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 1182 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:07,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 1380 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 11:57:07,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-11-26 11:57:07,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 332. [2023-11-26 11:57:07,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 228 states have (on average 1.3728070175438596) internal successors, (313), 230 states have internal predecessors, (313), 90 states have call successors, (90), 13 states have call predecessors, (90), 13 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-26 11:57:07,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 493 transitions. [2023-11-26 11:57:07,128 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 493 transitions. Word has length 260 [2023-11-26 11:57:07,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:07,129 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 493 transitions. [2023-11-26 11:57:07,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 states have internal predecessors, (115), 7 states have call successors, (73), 4 states have call predecessors, (73), 9 states have return successors, (74), 7 states have call predecessors, (74), 7 states have call successors, (74) [2023-11-26 11:57:07,129 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 493 transitions. [2023-11-26 11:57:07,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-26 11:57:07,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:07,134 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:07,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:07,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-26 11:57:07,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:07,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:07,342 INFO L85 PathProgramCache]: Analyzing trace with hash -670738017, now seen corresponding path program 1 times [2023-11-26 11:57:07,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:07,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139535417] [2023-11-26 11:57:07,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:07,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:07,386 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:07,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646418263] [2023-11-26 11:57:07,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:07,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:07,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:07,388 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:07,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cec1294d-a415-42c5-adae-97b1b0db3852/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:57:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:07,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-26 11:57:07,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1631 proven. 78 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2023-11-26 11:57:15,317 INFO L327 TraceCheckSpWp]: Computing backward predicates...