./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.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_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/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_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/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_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/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 36737b7958ca72f0774fc0f7ccab03861500afa24766b605f5269ead47c0b677 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:53:21,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:53:21,251 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:53:21,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:53:21,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:53:21,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:53:21,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:53:21,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:53:21,286 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:53:21,287 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:53:21,287 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:53:21,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:53:21,289 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:53:21,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:53:21,290 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:53:21,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:53:21,292 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:53:21,292 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:53:21,293 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:53:21,293 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:53:21,294 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:53:21,295 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:53:21,295 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:53:21,296 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:53:21,296 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:53:21,297 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:53:21,297 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:53:21,298 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:53:21,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:53:21,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:53:21,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:53:21,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:21,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:53:21,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:53:21,301 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:53:21,301 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:53:21,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:53:21,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:53:21,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:53:21,302 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:53:21,303 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:53:21,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:53:21,303 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_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36737b7958ca72f0774fc0f7ccab03861500afa24766b605f5269ead47c0b677 [2023-11-26 11:53:21,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:53:21,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:53:21,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:53:21,673 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:53:21,674 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:53:21,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.i [2023-11-26 11:53:24,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:53:25,087 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:53:25,089 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.i [2023-11-26 11:53:25,103 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/data/3bdbf54aa/7a61f2e429034dacbf3c20d7bcea8d3e/FLAG7729f312d [2023-11-26 11:53:25,120 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/data/3bdbf54aa/7a61f2e429034dacbf3c20d7bcea8d3e [2023-11-26 11:53:25,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:53:25,127 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:53:25,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:25,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:53:25,135 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:53:25,136 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:25" (1/1) ... [2023-11-26 11:53:25,137 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@622b5138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:25, skipping insertion in model container [2023-11-26 11:53:25,137 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:25" (1/1) ... [2023-11-26 11:53:25,186 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:53:25,376 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_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.i[916,929] [2023-11-26 11:53:25,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:25,500 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:53:25,511 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_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-20.i[916,929] [2023-11-26 11:53:25,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:25,582 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:53:25,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:25 WrapperNode [2023-11-26 11:53:25,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:25,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:25,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:53:25,586 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:53:25,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:25" (1/1) ... [2023-11-26 11:53:25,609 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:25" (1/1) ... [2023-11-26 11:53:25,676 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 247 [2023-11-26 11:53:25,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:25,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:53:25,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:53:25,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:53:25,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:25" (1/1) ... [2023-11-26 11:53:25,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:25" (1/1) ... [2023-11-26 11:53:25,706 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:25" (1/1) ... [2023-11-26 11:53:25,736 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 11:53:25,736 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:25" (1/1) ... [2023-11-26 11:53:25,736 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:25" (1/1) ... [2023-11-26 11:53:25,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:25" (1/1) ... [2023-11-26 11:53:25,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:25" (1/1) ... [2023-11-26 11:53:25,800 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:25" (1/1) ... [2023-11-26 11:53:25,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:25" (1/1) ... [2023-11-26 11:53:25,826 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:53:25,827 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:53:25,827 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:53:25,828 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:53:25,828 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:25" (1/1) ... [2023-11-26 11:53:25,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:25,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:25,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:53:25,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:53:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:53:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:53:25,922 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:53:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:53:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:53:25,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:53:26,062 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:53:26,065 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:53:26,692 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:53:26,739 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:53:26,744 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:53:26,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:26 BoogieIcfgContainer [2023-11-26 11:53:26,745 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:53:26,750 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:53:26,750 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:53:26,754 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:53:26,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:53:25" (1/3) ... [2023-11-26 11:53:26,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b108c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:26, skipping insertion in model container [2023-11-26 11:53:26,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:25" (2/3) ... [2023-11-26 11:53:26,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b108c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:26, skipping insertion in model container [2023-11-26 11:53:26,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:26" (3/3) ... [2023-11-26 11:53:26,759 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-20.i [2023-11-26 11:53:26,781 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:53:26,782 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:53:26,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:53:26,867 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;@7d4fd726, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:53:26,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:53:26,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 72 states have (on average 1.5) internal successors, (108), 73 states have internal predecessors, (108), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 11:53:26,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-11-26 11:53:26,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:53:26,896 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:26,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:53:26,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:26,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1565396338, now seen corresponding path program 1 times [2023-11-26 11:53:26,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:26,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823805254] [2023-11-26 11:53:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:26,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:27,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:27,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823805254] [2023-11-26 11:53:27,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:53:27,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345851662] [2023-11-26 11:53:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:27,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:27,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:27,336 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:27,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:53:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:27,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:53:27,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2023-11-26 11:53:27,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:53:27,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345851662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:27,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:27,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:27,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586240803] [2023-11-26 11:53:27,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:27,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:53:27,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:27,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:53:27,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:53:27,792 INFO L87 Difference]: Start difference. First operand has 106 states, 72 states have (on average 1.5) internal successors, (108), 73 states have internal predecessors, (108), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-26 11:53:27,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:53:27,873 INFO L93 Difference]: Finished difference Result 209 states and 369 transitions. [2023-11-26 11:53:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:53:27,876 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 200 [2023-11-26 11:53:27,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:53:27,888 INFO L225 Difference]: With dead ends: 209 [2023-11-26 11:53:27,888 INFO L226 Difference]: Without dead ends: 104 [2023-11-26 11:53:27,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 199 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 11:53:27,901 INFO L413 NwaCegarLoop]: 162 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, 162 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 11:53:27,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:53:27,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-26 11:53:27,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-11-26 11:53:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 71 states have internal predecessors, (103), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 11:53:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 165 transitions. [2023-11-26 11:53:27,973 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 165 transitions. Word has length 200 [2023-11-26 11:53:27,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:53:27,974 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 165 transitions. [2023-11-26 11:53:27,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-26 11:53:27,974 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 165 transitions. [2023-11-26 11:53:27,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-11-26 11:53:27,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:53:27,980 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:27,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:28,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:53:28,185 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:53:28,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:28,186 INFO L85 PathProgramCache]: Analyzing trace with hash -2033926456, now seen corresponding path program 1 times [2023-11-26 11:53:28,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:28,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313525151] [2023-11-26 11:53:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:28,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:28,302 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:53:28,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922612786] [2023-11-26 11:53:28,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:28,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:28,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:28,305 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:28,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:53:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:28,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:53:28,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-26 11:53:28,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:53:28,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:28,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313525151] [2023-11-26 11:53:28,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:53:28,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922612786] [2023-11-26 11:53:28,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922612786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:28,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:28,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:53:28,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988837516] [2023-11-26 11:53:28,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:28,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:28,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:28,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:28,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:28,604 INFO L87 Difference]: Start difference. First operand 104 states and 165 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 11:53:28,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:53:28,793 INFO L93 Difference]: Finished difference Result 305 states and 483 transitions. [2023-11-26 11:53:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:53:28,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 200 [2023-11-26 11:53:28,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:53:28,805 INFO L225 Difference]: With dead ends: 305 [2023-11-26 11:53:28,805 INFO L226 Difference]: Without dead ends: 202 [2023-11-26 11:53:28,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:53:28,811 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 151 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:53:28,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 635 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:53:28,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-11-26 11:53:28,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 130. [2023-11-26 11:53:28,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 97 states have (on average 1.4948453608247423) internal successors, (145), 97 states have internal predecessors, (145), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 11:53:28,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 207 transitions. [2023-11-26 11:53:28,874 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 207 transitions. Word has length 200 [2023-11-26 11:53:28,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:53:28,878 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 207 transitions. [2023-11-26 11:53:28,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 11:53:28,879 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 207 transitions. [2023-11-26 11:53:28,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-26 11:53:28,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:53:28,891 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:28,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:29,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:29,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:53:29,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:29,100 INFO L85 PathProgramCache]: Analyzing trace with hash -298470337, now seen corresponding path program 1 times [2023-11-26 11:53:29,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:29,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584950236] [2023-11-26 11:53:29,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:29,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:29,174 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:53:29,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332845860] [2023-11-26 11:53:29,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:29,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:29,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:29,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:29,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:53:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:29,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:53:29,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-26 11:53:29,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:53:29,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:29,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584950236] [2023-11-26 11:53:29,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:53:29,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332845860] [2023-11-26 11:53:29,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332845860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:29,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:29,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:53:29,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373231168] [2023-11-26 11:53:29,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:29,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:29,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:29,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:29,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:29,658 INFO L87 Difference]: Start difference. First operand 130 states and 207 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 11:53:29,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:53:29,905 INFO L93 Difference]: Finished difference Result 445 states and 708 transitions. [2023-11-26 11:53:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:53:29,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 201 [2023-11-26 11:53:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:53:29,910 INFO L225 Difference]: With dead ends: 445 [2023-11-26 11:53:29,911 INFO L226 Difference]: Without dead ends: 316 [2023-11-26 11:53:29,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:53:29,913 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 156 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:53:29,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 500 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:53:29,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-26 11:53:29,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 306. [2023-11-26 11:53:29,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 241 states have (on average 1.4730290456431536) internal successors, (355), 241 states have internal predecessors, (355), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-26 11:53:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 479 transitions. [2023-11-26 11:53:29,965 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 479 transitions. Word has length 201 [2023-11-26 11:53:29,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:53:29,967 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 479 transitions. [2023-11-26 11:53:29,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 11:53:29,967 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 479 transitions. [2023-11-26 11:53:29,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-26 11:53:29,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:53:29,973 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:29,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:30,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:30,181 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:53:30,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:30,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1299620608, now seen corresponding path program 1 times [2023-11-26 11:53:30,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:30,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845345240] [2023-11-26 11:53:30,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:30,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:30,229 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:53:30,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875906599] [2023-11-26 11:53:30,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:30,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:30,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:30,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:30,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:53:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:30,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:53:30,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 454 proven. 78 refuted. 0 times theorem prover too weak. 1328 trivial. 0 not checked. [2023-11-26 11:53:30,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:53:31,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 12 proven. 78 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-11-26 11:53:31,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:31,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845345240] [2023-11-26 11:53:31,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:53:31,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875906599] [2023-11-26 11:53:31,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875906599] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:53:31,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:53:31,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-26 11:53:31,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61553721] [2023-11-26 11:53:31,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:53:31,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:53:31,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:31,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:53:31,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:53:31,247 INFO L87 Difference]: Start difference. First operand 306 states and 479 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-11-26 11:53:33,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:53:33,604 INFO L93 Difference]: Finished difference Result 1252 states and 1924 transitions. [2023-11-26 11:53:33,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-26 11:53:33,605 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 202 [2023-11-26 11:53:33,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:53:33,617 INFO L225 Difference]: With dead ends: 1252 [2023-11-26 11:53:33,617 INFO L226 Difference]: Without dead ends: 947 [2023-11-26 11:53:33,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=460, Invalid=1520, Unknown=0, NotChecked=0, Total=1980 [2023-11-26 11:53:33,624 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 682 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:53:33,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 946 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 11:53:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2023-11-26 11:53:33,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 349. [2023-11-26 11:53:33,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 282 states have (on average 1.4609929078014185) internal successors, (412), 282 states have internal predecessors, (412), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-26 11:53:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 536 transitions. [2023-11-26 11:53:33,737 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 536 transitions. Word has length 202 [2023-11-26 11:53:33,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:53:33,739 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 536 transitions. [2023-11-26 11:53:33,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-11-26 11:53:33,739 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 536 transitions. [2023-11-26 11:53:33,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-26 11:53:33,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:53:33,743 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:33,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:33,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:33,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:53:33,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:33,958 INFO L85 PathProgramCache]: Analyzing trace with hash -2117269058, now seen corresponding path program 1 times [2023-11-26 11:53:33,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:33,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800670942] [2023-11-26 11:53:33,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:33,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:34,015 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:53:34,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143285890] [2023-11-26 11:53:34,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:34,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:34,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:34,027 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:34,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:53:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:34,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-26 11:53:34,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 670 proven. 321 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2023-11-26 11:53:37,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:53:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-26 11:53:38,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:38,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800670942] [2023-11-26 11:53:38,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:53:38,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143285890] [2023-11-26 11:53:38,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143285890] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 11:53:38,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:53:38,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [23] total 28 [2023-11-26 11:53:38,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756448120] [2023-11-26 11:53:38,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:38,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:53:38,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:38,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:53:38,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2023-11-26 11:53:38,208 INFO L87 Difference]: Start difference. First operand 349 states and 536 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 11:53:38,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:53:38,911 INFO L93 Difference]: Finished difference Result 706 states and 1066 transitions. [2023-11-26 11:53:38,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:53:38,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2023-11-26 11:53:38,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:53:38,923 INFO L225 Difference]: With dead ends: 706 [2023-11-26 11:53:38,924 INFO L226 Difference]: Without dead ends: 534 [2023-11-26 11:53:38,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=233, Invalid=1027, Unknown=0, NotChecked=0, Total=1260 [2023-11-26 11:53:38,926 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 434 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:53:38,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 612 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:53:38,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2023-11-26 11:53:38,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 388. [2023-11-26 11:53:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 321 states have (on average 1.4766355140186915) internal successors, (474), 321 states have internal predecessors, (474), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-26 11:53:38,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 598 transitions. [2023-11-26 11:53:38,972 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 598 transitions. Word has length 202 [2023-11-26 11:53:38,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:53:38,973 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 598 transitions. [2023-11-26 11:53:38,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 11:53:38,973 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 598 transitions. [2023-11-26 11:53:38,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-26 11:53:38,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:53:38,977 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:38,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-26 11:53:39,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:39,184 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:53:39,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:39,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1166580988, now seen corresponding path program 1 times [2023-11-26 11:53:39,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:39,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563833222] [2023-11-26 11:53:39,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:39,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:39,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:53:39,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279644377] [2023-11-26 11:53:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:39,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:39,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:39,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:39,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:53:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:39,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:53:39,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-26 11:53:39,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:53:39,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:39,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563833222] [2023-11-26 11:53:39,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:53:39,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279644377] [2023-11-26 11:53:39,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279644377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:39,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:39,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:53:39,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777490793] [2023-11-26 11:53:39,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:39,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:53:39,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:39,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:53:39,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:53:39,896 INFO L87 Difference]: Start difference. First operand 388 states and 598 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 11:53:40,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:53:40,525 INFO L93 Difference]: Finished difference Result 747 states and 1125 transitions. [2023-11-26 11:53:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:53:40,526 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2023-11-26 11:53:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:53:40,531 INFO L225 Difference]: With dead ends: 747 [2023-11-26 11:53:40,531 INFO L226 Difference]: Without dead ends: 537 [2023-11-26 11:53:40,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:53:40,533 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 315 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:53:40,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 789 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:53:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2023-11-26 11:53:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 398. [2023-11-26 11:53:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 331 states have (on average 1.459214501510574) internal successors, (483), 331 states have internal predecessors, (483), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-26 11:53:40,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 607 transitions. [2023-11-26 11:53:40,572 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 607 transitions. Word has length 202 [2023-11-26 11:53:40,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:53:40,573 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 607 transitions. [2023-11-26 11:53:40,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 11:53:40,573 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 607 transitions. [2023-11-26 11:53:40,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-26 11:53:40,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:53:40,576 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:40,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:40,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:53:40,783 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:53:40,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:40,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1508796286, now seen corresponding path program 1 times [2023-11-26 11:53:40,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:40,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660260360] [2023-11-26 11:53:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:40,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:40,818 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:53:40,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571877819] [2023-11-26 11:53:40,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:40,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:40,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:40,824 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:40,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:53:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:41,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-26 11:53:41,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 722 proven. 264 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2023-11-26 11:53:42,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:53:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 48 proven. 129 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2023-11-26 11:53:44,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:44,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660260360] [2023-11-26 11:53:44,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:53:44,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571877819] [2023-11-26 11:53:44,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571877819] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:53:44,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:53:44,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 28 [2023-11-26 11:53:44,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494910003] [2023-11-26 11:53:44,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:53:44,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-26 11:53:44,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:44,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-26 11:53:44,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2023-11-26 11:53:44,353 INFO L87 Difference]: Start difference. First operand 398 states and 607 transitions. Second operand has 28 states, 27 states have (on average 4.074074074074074) internal successors, (110), 25 states have internal predecessors, (110), 7 states have call successors, (57), 5 states have call predecessors, (57), 9 states have return successors, (58), 7 states have call predecessors, (58), 7 states have call successors, (58) [2023-11-26 11:53:53,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:53:53,418 INFO L93 Difference]: Finished difference Result 1942 states and 2779 transitions. [2023-11-26 11:53:53,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-11-26 11:53:53,424 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.074074074074074) internal successors, (110), 25 states have internal predecessors, (110), 7 states have call successors, (57), 5 states have call predecessors, (57), 9 states have return successors, (58), 7 states have call predecessors, (58), 7 states have call successors, (58) Word has length 203 [2023-11-26 11:53:53,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:53:53,441 INFO L225 Difference]: With dead ends: 1942 [2023-11-26 11:53:53,442 INFO L226 Difference]: Without dead ends: 1545 [2023-11-26 11:53:53,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7742 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=4408, Invalid=17644, Unknown=0, NotChecked=0, Total=22052 [2023-11-26 11:53:53,453 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1891 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:53:53,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1899 Valid, 1458 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-26 11:53:53,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2023-11-26 11:53:53,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 681. [2023-11-26 11:53:53,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 562 states have (on average 1.4341637010676156) internal successors, (806), 564 states have internal predecessors, (806), 97 states have call successors, (97), 21 states have call predecessors, (97), 21 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-26 11:53:53,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1000 transitions. [2023-11-26 11:53:53,561 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1000 transitions. Word has length 203 [2023-11-26 11:53:53,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:53:53,562 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 1000 transitions. [2023-11-26 11:53:53,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.074074074074074) internal successors, (110), 25 states have internal predecessors, (110), 7 states have call successors, (57), 5 states have call predecessors, (57), 9 states have return successors, (58), 7 states have call predecessors, (58), 7 states have call successors, (58) [2023-11-26 11:53:53,563 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1000 transitions. [2023-11-26 11:53:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-26 11:53:53,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:53:53,567 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:53,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:53,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 11:53:53,775 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:53:53,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2095602300, now seen corresponding path program 1 times [2023-11-26 11:53:53,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:53,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044512099] [2023-11-26 11:53:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:53,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:53,820 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:53:53,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109301950] [2023-11-26 11:53:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:53,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:53,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:53,822 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:53,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:53:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:54,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:53:54,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:54,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-26 11:53:54,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:53:54,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:54,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044512099] [2023-11-26 11:53:54,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:53:54,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109301950] [2023-11-26 11:53:54,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109301950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:54,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:54,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:53:54,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099890803] [2023-11-26 11:53:54,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:54,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:53:54,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:54,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:53:54,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:53:54,331 INFO L87 Difference]: Start difference. First operand 681 states and 1000 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 11:53:54,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:53:54,851 INFO L93 Difference]: Finished difference Result 1701 states and 2546 transitions. [2023-11-26 11:53:54,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:53:54,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2023-11-26 11:53:54,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:53:54,861 INFO L225 Difference]: With dead ends: 1701 [2023-11-26 11:53:54,862 INFO L226 Difference]: Without dead ends: 1266 [2023-11-26 11:53:54,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:53:54,864 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 271 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:53:54,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 633 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:53:54,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2023-11-26 11:53:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 905. [2023-11-26 11:53:54,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 786 states have (on average 1.4567430025445292) internal successors, (1145), 788 states have internal predecessors, (1145), 97 states have call successors, (97), 21 states have call predecessors, (97), 21 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-26 11:53:54,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1339 transitions. [2023-11-26 11:53:54,959 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1339 transitions. Word has length 203 [2023-11-26 11:53:54,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:53:54,959 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 1339 transitions. [2023-11-26 11:53:54,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 11:53:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1339 transitions. [2023-11-26 11:53:54,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-26 11:53:54,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:53:54,963 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:54,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:55,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:55,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:53:55,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:55,171 INFO L85 PathProgramCache]: Analyzing trace with hash 510421254, now seen corresponding path program 1 times [2023-11-26 11:53:55,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:55,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410028709] [2023-11-26 11:53:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:55,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:55,212 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:53:55,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000556311] [2023-11-26 11:53:55,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:55,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:55,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:55,214 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:55,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:53:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:55,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:53:55,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:55,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-11-26 11:53:55,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:53:55,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:55,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410028709] [2023-11-26 11:53:55,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:53:55,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000556311] [2023-11-26 11:53:55,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000556311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:55,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:55,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:53:55,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241207344] [2023-11-26 11:53:55,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:55,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:55,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:55,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:55,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:55,436 INFO L87 Difference]: Start difference. First operand 905 states and 1339 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 11:53:55,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:53:55,811 INFO L93 Difference]: Finished difference Result 2135 states and 3112 transitions. [2023-11-26 11:53:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:53:55,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2023-11-26 11:53:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:53:55,820 INFO L225 Difference]: With dead ends: 2135 [2023-11-26 11:53:55,820 INFO L226 Difference]: Without dead ends: 1231 [2023-11-26 11:53:55,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:55,824 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 180 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:53:55,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 378 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:53:55,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2023-11-26 11:53:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 865. [2023-11-26 11:53:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 746 states have (on average 1.4410187667560321) internal successors, (1075), 748 states have internal predecessors, (1075), 97 states have call successors, (97), 21 states have call predecessors, (97), 21 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-26 11:53:55,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1269 transitions. [2023-11-26 11:53:55,927 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1269 transitions. Word has length 203 [2023-11-26 11:53:55,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:53:55,927 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1269 transitions. [2023-11-26 11:53:55,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-26 11:53:55,927 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1269 transitions. [2023-11-26 11:53:55,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-26 11:53:55,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:53:55,930 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:55,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:56,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:56,137 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:53:56,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:56,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1642809792, now seen corresponding path program 1 times [2023-11-26 11:53:56,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:56,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805138890] [2023-11-26 11:53:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:56,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:56,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:53:56,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277077911] [2023-11-26 11:53:56,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:56,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:56,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:56,174 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:56,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:53:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:56,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-26 11:53:56,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 670 proven. 321 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2023-11-26 11:53:58,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:54:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 48 proven. 129 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2023-11-26 11:54:03,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:03,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805138890] [2023-11-26 11:54:03,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:54:03,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277077911] [2023-11-26 11:54:03,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277077911] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:54:03,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:54:03,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12] total 31 [2023-11-26 11:54:03,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306279673] [2023-11-26 11:54:03,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:54:03,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-26 11:54:03,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:03,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-26 11:54:03,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2023-11-26 11:54:03,731 INFO L87 Difference]: Start difference. First operand 865 states and 1269 transitions. Second operand has 31 states, 30 states have (on average 3.8333333333333335) internal successors, (115), 28 states have internal predecessors, (115), 8 states have call successors, (57), 6 states have call predecessors, (57), 10 states have return successors, (58), 8 states have call predecessors, (58), 8 states have call successors, (58) [2023-11-26 11:54:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:14,815 INFO L93 Difference]: Finished difference Result 2507 states and 3620 transitions. [2023-11-26 11:54:14,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-26 11:54:14,816 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.8333333333333335) internal successors, (115), 28 states have internal predecessors, (115), 8 states have call successors, (57), 6 states have call predecessors, (57), 10 states have return successors, (58), 8 states have call predecessors, (58), 8 states have call successors, (58) Word has length 203 [2023-11-26 11:54:14,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:14,828 INFO L225 Difference]: With dead ends: 2507 [2023-11-26 11:54:14,828 INFO L226 Difference]: Without dead ends: 1948 [2023-11-26 11:54:14,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2508 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1732, Invalid=6824, Unknown=0, NotChecked=0, Total=8556 [2023-11-26 11:54:14,834 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 841 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:14,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 1650 Invalid, 2586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-26 11:54:14,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2023-11-26 11:54:14,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 933. [2023-11-26 11:54:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 814 states have (on average 1.4398034398034398) internal successors, (1172), 816 states have internal predecessors, (1172), 97 states have call successors, (97), 21 states have call predecessors, (97), 21 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-26 11:54:14,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1366 transitions. [2023-11-26 11:54:14,964 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1366 transitions. Word has length 203 [2023-11-26 11:54:14,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:14,965 INFO L495 AbstractCegarLoop]: Abstraction has 933 states and 1366 transitions. [2023-11-26 11:54:14,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.8333333333333335) internal successors, (115), 28 states have internal predecessors, (115), 8 states have call successors, (57), 6 states have call predecessors, (57), 10 states have return successors, (58), 8 states have call predecessors, (58), 8 states have call successors, (58) [2023-11-26 11:54:14,966 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1366 transitions. [2023-11-26 11:54:14,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-26 11:54:14,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:14,968 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:14,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:15,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adab8d4a-c47c-4f97-868b-d4bfbfeddeb2/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:15,175 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:54:15,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:15,176 INFO L85 PathProgramCache]: Analyzing trace with hash 376407748, now seen corresponding path program 1 times [2023-11-26 11:54:15,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:15,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420780870] [2023-11-26 11:54:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:15,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms