./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58fd69d2f74506159a7a57598b08a18ff098ebf1233f7e6688a335d4e30dd566 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 15:50:13,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:50:13,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:50:13,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:50:13,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:50:13,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:50:13,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:50:13,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:50:13,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:50:13,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:50:13,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:50:13,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:50:13,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:50:13,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:50:13,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:50:13,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:50:13,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:50:13,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:50:13,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:50:13,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:50:13,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:50:13,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:50:13,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:50:13,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:50:13,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:50:13,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:50:13,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:50:13,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:50:13,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:50:13,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:50:13,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:50:13,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:50:13,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:50:13,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:50:13,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:50:13,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:50:13,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:50:13,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:50:13,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:50:13,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:50:13,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:50:13,690 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:50:13,733 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:50:13,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:50:13,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:50:13,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:50:13,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:50:13,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:50:13,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:50:13,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:50:13,737 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:50:13,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:50:13,739 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:50:13,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:50:13,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:50:13,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:50:13,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:50:13,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:50:13,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:50:13,740 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:50:13,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:50:13,741 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:50:13,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:50:13,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:50:13,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:50:13,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:50:13,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:50:13,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:50:13,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:50:13,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:50:13,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:50:13,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:50:13,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:50:13,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:50:13,745 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:50:13,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:50:13,746 INFO L138 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_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58fd69d2f74506159a7a57598b08a18ff098ebf1233f7e6688a335d4e30dd566 [2022-11-25 15:50:14,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:50:14,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:50:14,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:50:14,125 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:50:14,126 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:50:14,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/product-lines/email_spec11_product18.cil.c [2022-11-25 15:50:17,322 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:50:17,727 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:50:17,728 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/sv-benchmarks/c/product-lines/email_spec11_product18.cil.c [2022-11-25 15:50:17,751 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/data/539120350/4596367b815647fea165883f0d1b3e05/FLAG765e57ccc [2022-11-25 15:50:17,775 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/data/539120350/4596367b815647fea165883f0d1b3e05 [2022-11-25 15:50:17,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:50:17,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:50:17,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:50:17,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:50:17,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:50:17,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:50:17" (1/1) ... [2022-11-25 15:50:17,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1431c724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:50:17, skipping insertion in model container [2022-11-25 15:50:17,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:50:17" (1/1) ... [2022-11-25 15:50:17,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:50:17,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:50:18,431 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:50:18,435 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:50:18,474 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:50:18,490 WARN L237 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_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/sv-benchmarks/c/product-lines/email_spec11_product18.cil.c[57905,57918] [2022-11-25 15:50:18,498 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:50:18,530 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:50:18,533 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:50:18,543 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:50:18,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:50:18,594 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:50:18,764 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:50:18,767 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:50:18,779 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:50:18,782 WARN L237 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_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/sv-benchmarks/c/product-lines/email_spec11_product18.cil.c[57905,57918] [2022-11-25 15:50:18,782 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:50:18,785 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:50:18,786 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:50:18,789 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:50:18,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:50:18,838 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:50:18,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:50:18 WrapperNode [2022-11-25 15:50:18,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:50:18,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:50:18,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:50:18,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:50:18,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:50:18" (1/1) ... [2022-11-25 15:50:18,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:50:18" (1/1) ... [2022-11-25 15:50:18,944 INFO L138 Inliner]: procedures = 127, calls = 198, calls flagged for inlining = 59, calls inlined = 50, statements flattened = 907 [2022-11-25 15:50:18,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:50:18,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:50:18,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:50:18,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:50:18,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:50:18" (1/1) ... [2022-11-25 15:50:18,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:50:18" (1/1) ... [2022-11-25 15:50:18,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:50:18" (1/1) ... [2022-11-25 15:50:18,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:50:18" (1/1) ... [2022-11-25 15:50:18,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:50:18" (1/1) ... [2022-11-25 15:50:18,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:50:18" (1/1) ... [2022-11-25 15:50:19,000 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:50:18" (1/1) ... [2022-11-25 15:50:19,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:50:18" (1/1) ... [2022-11-25 15:50:19,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:50:19,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:50:19,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:50:19,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:50:19,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:50:18" (1/1) ... [2022-11-25 15:50:19,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:50:19,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:50:19,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:50:19,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:50:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-25 15:50:19,127 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-25 15:50:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-25 15:50:19,127 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-25 15:50:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-25 15:50:19,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-25 15:50:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-25 15:50:19,128 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-25 15:50:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-25 15:50:19,128 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-25 15:50:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-25 15:50:19,129 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-25 15:50:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-25 15:50:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-25 15:50:19,129 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-25 15:50:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-25 15:50:19,130 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-25 15:50:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:50:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-25 15:50:19,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-25 15:50:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-25 15:50:19,130 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-25 15:50:19,131 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-25 15:50:19,131 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-25 15:50:19,131 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-25 15:50:19,131 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-25 15:50:19,131 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-25 15:50:19,132 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-25 15:50:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-25 15:50:19,132 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-25 15:50:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-25 15:50:19,132 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-25 15:50:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:50:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-25 15:50:19,133 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-25 15:50:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:50:19,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:50:19,376 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:50:19,380 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:50:20,491 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:50:20,503 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:50:20,510 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 15:50:20,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:50:20 BoogieIcfgContainer [2022-11-25 15:50:20,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:50:20,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:50:20,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:50:20,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:50:20,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:50:17" (1/3) ... [2022-11-25 15:50:20,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@deb450c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:50:20, skipping insertion in model container [2022-11-25 15:50:20,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:50:18" (2/3) ... [2022-11-25 15:50:20,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@deb450c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:50:20, skipping insertion in model container [2022-11-25 15:50:20,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:50:20" (3/3) ... [2022-11-25 15:50:20,531 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product18.cil.c [2022-11-25 15:50:20,553 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:50:20,553 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 15:50:20,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:50:20,648 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@18ac8eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:50:20,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 15:50:20,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 284 states, 228 states have (on average 1.5482456140350878) internal successors, (353), 230 states have internal predecessors, (353), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-25 15:50:20,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 15:50:20,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:20,691 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:20,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:20,698 INFO L85 PathProgramCache]: Analyzing trace with hash -420694025, now seen corresponding path program 1 times [2022-11-25 15:50:20,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:20,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528815690] [2022-11-25 15:50:20,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:20,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:21,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:21,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:21,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:21,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 15:50:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:21,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:50:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:21,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 15:50:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:21,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:50:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:21,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:50:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:21,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 15:50:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:21,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:50:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:21,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 15:50:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:21,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 15:50:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-25 15:50:21,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:21,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528815690] [2022-11-25 15:50:21,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528815690] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:50:21,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421669210] [2022-11-25 15:50:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:21,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:50:21,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:50:21,719 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:50:21,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:50:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:22,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 15:50:22,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:50:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-25 15:50:22,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:50:22,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421669210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:22,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:50:22,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-11-25 15:50:22,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394697713] [2022-11-25 15:50:22,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:22,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:50:22,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:22,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:50:22,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:50:22,222 INFO L87 Difference]: Start difference. First operand has 284 states, 228 states have (on average 1.5482456140350878) internal successors, (353), 230 states have internal predecessors, (353), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:22,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:22,280 INFO L93 Difference]: Finished difference Result 414 states and 612 transitions. [2022-11-25 15:50:22,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:50:22,283 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2022-11-25 15:50:22,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:22,296 INFO L225 Difference]: With dead ends: 414 [2022-11-25 15:50:22,296 INFO L226 Difference]: Without dead ends: 277 [2022-11-25 15:50:22,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:50:22,304 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:22,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:50:22,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-25 15:50:22,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2022-11-25 15:50:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 222 states have (on average 1.5405405405405406) internal successors, (342), 223 states have internal predecessors, (342), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-25 15:50:22,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 417 transitions. [2022-11-25 15:50:22,419 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 417 transitions. Word has length 98 [2022-11-25 15:50:22,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:22,427 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 417 transitions. [2022-11-25 15:50:22,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:22,451 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 417 transitions. [2022-11-25 15:50:22,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-25 15:50:22,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:22,455 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:22,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:50:22,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 15:50:22,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:22,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:22,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2127493050, now seen corresponding path program 1 times [2022-11-25 15:50:22,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:22,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337029358] [2022-11-25 15:50:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:22,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:23,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:23,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:23,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:23,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 15:50:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:23,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:50:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:23,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 15:50:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:23,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 15:50:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:23,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:50:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:23,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:50:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:23,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 15:50:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:23,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 15:50:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:23,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 15:50:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-25 15:50:23,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:23,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337029358] [2022-11-25 15:50:23,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337029358] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:50:23,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140450922] [2022-11-25 15:50:23,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:23,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:50:23,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:50:23,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:50:23,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:50:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:23,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:50:23,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:50:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-25 15:50:23,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:50:23,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140450922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:23,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:50:23,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-25 15:50:23,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815376652] [2022-11-25 15:50:23,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:23,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:50:23,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:23,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:50:23,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:50:23,554 INFO L87 Difference]: Start difference. First operand 277 states and 417 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:23,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:23,602 INFO L93 Difference]: Finished difference Result 404 states and 593 transitions. [2022-11-25 15:50:23,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:50:23,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2022-11-25 15:50:23,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:23,607 INFO L225 Difference]: With dead ends: 404 [2022-11-25 15:50:23,607 INFO L226 Difference]: Without dead ends: 280 [2022-11-25 15:50:23,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:50:23,611 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:23,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 828 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:50:23,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-25 15:50:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 279. [2022-11-25 15:50:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 224 states have (on average 1.5357142857142858) internal successors, (344), 225 states have internal predecessors, (344), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-25 15:50:23,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 419 transitions. [2022-11-25 15:50:23,645 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 419 transitions. Word has length 99 [2022-11-25 15:50:23,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:23,646 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 419 transitions. [2022-11-25 15:50:23,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:23,646 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 419 transitions. [2022-11-25 15:50:23,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-25 15:50:23,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:23,650 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:23,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:50:23,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:50:23,857 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:23,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:23,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1018330324, now seen corresponding path program 1 times [2022-11-25 15:50:23,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:23,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430222980] [2022-11-25 15:50:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:23,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:24,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:24,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:24,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:24,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 15:50:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:24,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:50:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:24,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 15:50:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:24,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 15:50:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 15:50:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:24,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 15:50:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 15:50:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 15:50:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 15:50:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 15:50:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:24,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430222980] [2022-11-25 15:50:24,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430222980] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:50:24,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033609963] [2022-11-25 15:50:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:24,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:50:24,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:50:24,182 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:50:24,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:50:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:24,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:50:24,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:50:24,535 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-25 15:50:24,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:50:24,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033609963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:24,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:50:24,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-25 15:50:24,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987788391] [2022-11-25 15:50:24,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:24,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:50:24,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:24,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:50:24,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:50:24,538 INFO L87 Difference]: Start difference. First operand 279 states and 419 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:24,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:24,581 INFO L93 Difference]: Finished difference Result 588 states and 897 transitions. [2022-11-25 15:50:24,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:50:24,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-11-25 15:50:24,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:24,586 INFO L225 Difference]: With dead ends: 588 [2022-11-25 15:50:24,586 INFO L226 Difference]: Without dead ends: 336 [2022-11-25 15:50:24,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:50:24,590 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 107 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:24,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 800 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:50:24,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-25 15:50:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 328. [2022-11-25 15:50:24,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 262 states have (on average 1.549618320610687) internal successors, (406), 263 states have internal predecessors, (406), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-25 15:50:24,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 503 transitions. [2022-11-25 15:50:24,616 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 503 transitions. Word has length 108 [2022-11-25 15:50:24,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:24,617 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 503 transitions. [2022-11-25 15:50:24,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:24,617 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 503 transitions. [2022-11-25 15:50:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-25 15:50:24,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:24,621 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:24,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:50:24,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:50:24,829 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:24,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:24,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1552258535, now seen corresponding path program 1 times [2022-11-25 15:50:24,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:24,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841627267] [2022-11-25 15:50:24,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:24,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:25,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:25,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 15:50:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:25,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:50:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:25,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 15:50:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:25,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 15:50:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:25,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 15:50:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:25,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 15:50:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:25,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:50:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:25,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 15:50:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:25,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 15:50:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:25,129 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 15:50:25,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:25,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841627267] [2022-11-25 15:50:25,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841627267] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:50:25,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280565137] [2022-11-25 15:50:25,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:25,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:50:25,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:50:25,135 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:50:25,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 15:50:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:25,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 15:50:25,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:50:25,568 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 15:50:25,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:50:25,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280565137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:25,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:50:25,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-25 15:50:25,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130948024] [2022-11-25 15:50:25,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:25,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:50:25,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:25,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:50:25,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:50:25,572 INFO L87 Difference]: Start difference. First operand 328 states and 503 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 15:50:25,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:25,692 INFO L93 Difference]: Finished difference Result 647 states and 996 transitions. [2022-11-25 15:50:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:50:25,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2022-11-25 15:50:25,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:25,703 INFO L225 Difference]: With dead ends: 647 [2022-11-25 15:50:25,703 INFO L226 Difference]: Without dead ends: 330 [2022-11-25 15:50:25,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:50:25,711 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 125 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:25,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1487 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:50:25,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-25 15:50:25,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2022-11-25 15:50:25,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 263 states have (on average 1.5475285171102662) internal successors, (407), 265 states have internal predecessors, (407), 49 states have call successors, (49), 16 states have call predecessors, (49), 17 states have return successors, (50), 48 states have call predecessors, (50), 48 states have call successors, (50) [2022-11-25 15:50:25,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 506 transitions. [2022-11-25 15:50:25,758 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 506 transitions. Word has length 109 [2022-11-25 15:50:25,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:25,760 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 506 transitions. [2022-11-25 15:50:25,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 15:50:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 506 transitions. [2022-11-25 15:50:25,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-25 15:50:25,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:25,765 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:25,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 15:50:25,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:50:25,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash 618315860, now seen corresponding path program 1 times [2022-11-25 15:50:25,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:25,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149029180] [2022-11-25 15:50:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:25,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:26,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:26,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:26,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:26,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:50:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:26,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 15:50:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:26,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:50:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:26,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 15:50:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:26,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 15:50:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:26,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 15:50:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:26,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 15:50:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 15:50:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:26,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 15:50:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 15:50:26,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:26,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149029180] [2022-11-25 15:50:26,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149029180] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:50:26,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089275916] [2022-11-25 15:50:26,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:26,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:50:26,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:50:26,307 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:50:26,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 15:50:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:26,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:50:26,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:50:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 15:50:26,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:50:26,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089275916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:26,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:50:26,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-25 15:50:26,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906868694] [2022-11-25 15:50:26,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:26,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:50:26,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:26,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:50:26,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:50:26,745 INFO L87 Difference]: Start difference. First operand 330 states and 506 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 15:50:26,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:26,841 INFO L93 Difference]: Finished difference Result 649 states and 1001 transitions. [2022-11-25 15:50:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:50:26,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2022-11-25 15:50:26,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:26,846 INFO L225 Difference]: With dead ends: 649 [2022-11-25 15:50:26,846 INFO L226 Difference]: Without dead ends: 332 [2022-11-25 15:50:26,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:50:26,850 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 124 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:26,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1476 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:50:26,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-25 15:50:26,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2022-11-25 15:50:26,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 264 states have (on average 1.5454545454545454) internal successors, (408), 267 states have internal predecessors, (408), 49 states have call successors, (49), 16 states have call predecessors, (49), 18 states have return successors, (55), 48 states have call predecessors, (55), 48 states have call successors, (55) [2022-11-25 15:50:26,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 512 transitions. [2022-11-25 15:50:26,882 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 512 transitions. Word has length 110 [2022-11-25 15:50:26,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:26,883 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 512 transitions. [2022-11-25 15:50:26,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 15:50:26,883 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 512 transitions. [2022-11-25 15:50:26,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-25 15:50:26,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:26,886 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:26,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:50:27,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:50:27,094 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:27,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:27,095 INFO L85 PathProgramCache]: Analyzing trace with hash 231538481, now seen corresponding path program 1 times [2022-11-25 15:50:27,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:27,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166607835] [2022-11-25 15:50:27,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:27,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:27,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:27,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:27,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:50:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:27,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:50:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:27,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-25 15:50:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:27,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 15:50:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:27,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 15:50:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:27,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 15:50:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:27,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 15:50:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:27,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 15:50:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:27,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-25 15:50:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 15:50:27,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:27,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166607835] [2022-11-25 15:50:27,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166607835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:27,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:50:27,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:50:27,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798201555] [2022-11-25 15:50:27,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:27,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:50:27,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:27,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:50:27,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:50:27,375 INFO L87 Difference]: Start difference. First operand 332 states and 512 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 15:50:29,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:29,566 INFO L93 Difference]: Finished difference Result 742 states and 1149 transitions. [2022-11-25 15:50:29,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:50:29,571 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2022-11-25 15:50:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:29,575 INFO L225 Difference]: With dead ends: 742 [2022-11-25 15:50:29,575 INFO L226 Difference]: Without dead ends: 433 [2022-11-25 15:50:29,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-25 15:50:29,577 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 999 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 2106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:29,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 988 Invalid, 2106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 15:50:29,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-25 15:50:29,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 332. [2022-11-25 15:50:29,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 264 states have (on average 1.5454545454545454) internal successors, (408), 267 states have internal predecessors, (408), 49 states have call successors, (49), 16 states have call predecessors, (49), 18 states have return successors, (54), 48 states have call predecessors, (54), 48 states have call successors, (54) [2022-11-25 15:50:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 511 transitions. [2022-11-25 15:50:29,645 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 511 transitions. Word has length 111 [2022-11-25 15:50:29,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:29,646 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 511 transitions. [2022-11-25 15:50:29,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 15:50:29,646 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 511 transitions. [2022-11-25 15:50:29,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-25 15:50:29,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:29,650 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:29,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:50:29,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:29,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:29,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1338357194, now seen corresponding path program 2 times [2022-11-25 15:50:29,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:29,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518673647] [2022-11-25 15:50:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:29,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:29,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:29,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:29,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:50:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:29,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:50:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:29,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 15:50:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 15:50:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:29,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 15:50:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:29,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-25 15:50:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:29,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 15:50:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:29,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 15:50:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:29,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-25 15:50:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:29,948 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 15:50:29,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:29,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518673647] [2022-11-25 15:50:29,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518673647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:29,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:50:29,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:50:29,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325996276] [2022-11-25 15:50:29,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:29,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:50:29,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:29,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:50:29,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:50:29,952 INFO L87 Difference]: Start difference. First operand 332 states and 511 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 15:50:31,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:31,933 INFO L93 Difference]: Finished difference Result 744 states and 1152 transitions. [2022-11-25 15:50:31,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:50:31,934 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2022-11-25 15:50:31,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:31,937 INFO L225 Difference]: With dead ends: 744 [2022-11-25 15:50:31,938 INFO L226 Difference]: Without dead ends: 435 [2022-11-25 15:50:31,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-25 15:50:31,940 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 994 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 2118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:31,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 988 Invalid, 2118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-25 15:50:31,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-25 15:50:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 334. [2022-11-25 15:50:31,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 265 states have (on average 1.5433962264150944) internal successors, (409), 269 states have internal predecessors, (409), 49 states have call successors, (49), 16 states have call predecessors, (49), 19 states have return successors, (56), 48 states have call predecessors, (56), 48 states have call successors, (56) [2022-11-25 15:50:31,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 514 transitions. [2022-11-25 15:50:31,987 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 514 transitions. Word has length 112 [2022-11-25 15:50:31,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:31,987 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 514 transitions. [2022-11-25 15:50:31,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 15:50:31,988 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 514 transitions. [2022-11-25 15:50:31,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-25 15:50:31,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:31,991 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:31,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:50:31,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:31,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:31,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1357662934, now seen corresponding path program 1 times [2022-11-25 15:50:31,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:31,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971381513] [2022-11-25 15:50:31,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:31,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:32,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:32,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:32,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:32,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:50:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:50:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:32,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:50:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:32,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 15:50:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:32,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 15:50:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:32,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 15:50:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:32,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 15:50:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:32,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 15:50:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:32,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 15:50:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 15:50:32,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:32,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971381513] [2022-11-25 15:50:32,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971381513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:32,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:50:32,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 15:50:32,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756802655] [2022-11-25 15:50:32,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:32,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 15:50:32,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:32,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:50:32,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:50:32,304 INFO L87 Difference]: Start difference. First operand 334 states and 514 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 15:50:35,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:35,108 INFO L93 Difference]: Finished difference Result 742 states and 1147 transitions. [2022-11-25 15:50:35,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:50:35,108 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 113 [2022-11-25 15:50:35,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:35,111 INFO L225 Difference]: With dead ends: 742 [2022-11-25 15:50:35,111 INFO L226 Difference]: Without dead ends: 435 [2022-11-25 15:50:35,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-25 15:50:35,114 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1118 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3077 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 3378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 3077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:35,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 1290 Invalid, 3378 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [301 Valid, 3077 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-25 15:50:35,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-25 15:50:35,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 334. [2022-11-25 15:50:35,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 265 states have (on average 1.5433962264150944) internal successors, (409), 269 states have internal predecessors, (409), 49 states have call successors, (49), 16 states have call predecessors, (49), 19 states have return successors, (55), 48 states have call predecessors, (55), 48 states have call successors, (55) [2022-11-25 15:50:35,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 513 transitions. [2022-11-25 15:50:35,166 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 513 transitions. Word has length 113 [2022-11-25 15:50:35,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:35,166 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 513 transitions. [2022-11-25 15:50:35,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 15:50:35,167 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 513 transitions. [2022-11-25 15:50:35,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-25 15:50:35,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:35,170 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:35,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:50:35,170 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:35,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:35,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1580989753, now seen corresponding path program 2 times [2022-11-25 15:50:35,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:35,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616265158] [2022-11-25 15:50:35,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:35,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:35,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:35,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:35,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:35,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:50:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:50:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:35,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:50:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:35,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 15:50:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:35,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:50:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:35,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 15:50:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:35,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 15:50:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:35,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 15:50:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:35,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 15:50:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 15:50:35,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:35,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616265158] [2022-11-25 15:50:35,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616265158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:35,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:50:35,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 15:50:35,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358410690] [2022-11-25 15:50:35,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:35,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 15:50:35,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:35,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:50:35,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:50:35,469 INFO L87 Difference]: Start difference. First operand 334 states and 513 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 15:50:38,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:38,056 INFO L93 Difference]: Finished difference Result 744 states and 1153 transitions. [2022-11-25 15:50:38,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:50:38,057 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2022-11-25 15:50:38,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:38,063 INFO L225 Difference]: With dead ends: 744 [2022-11-25 15:50:38,064 INFO L226 Difference]: Without dead ends: 437 [2022-11-25 15:50:38,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-25 15:50:38,068 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1113 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3102 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 3400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 3102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:38,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1290 Invalid, 3400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 3102 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 15:50:38,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-11-25 15:50:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 336. [2022-11-25 15:50:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 266 states have (on average 1.5413533834586466) internal successors, (410), 271 states have internal predecessors, (410), 49 states have call successors, (49), 16 states have call predecessors, (49), 20 states have return successors, (60), 48 states have call predecessors, (60), 48 states have call successors, (60) [2022-11-25 15:50:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 519 transitions. [2022-11-25 15:50:38,117 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 519 transitions. Word has length 114 [2022-11-25 15:50:38,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:38,118 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 519 transitions. [2022-11-25 15:50:38,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 15:50:38,119 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 519 transitions. [2022-11-25 15:50:38,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 15:50:38,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:38,122 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:38,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:50:38,123 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:38,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:38,124 INFO L85 PathProgramCache]: Analyzing trace with hash 823426557, now seen corresponding path program 1 times [2022-11-25 15:50:38,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:38,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796670773] [2022-11-25 15:50:38,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:38,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:38,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:38,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:38,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:38,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:50:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:38,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:50:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:38,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:50:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:38,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 15:50:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:38,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 15:50:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:38,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:50:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:38,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 15:50:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:38,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 15:50:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-25 15:50:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-25 15:50:38,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:38,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796670773] [2022-11-25 15:50:38,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796670773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:38,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:50:38,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 15:50:38,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309992598] [2022-11-25 15:50:38,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:38,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:50:38,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:38,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:50:38,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:50:38,372 INFO L87 Difference]: Start difference. First operand 336 states and 519 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 15:50:40,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:40,375 INFO L93 Difference]: Finished difference Result 746 states and 1156 transitions. [2022-11-25 15:50:40,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 15:50:40,376 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2022-11-25 15:50:40,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:40,380 INFO L225 Difference]: With dead ends: 746 [2022-11-25 15:50:40,380 INFO L226 Difference]: Without dead ends: 437 [2022-11-25 15:50:40,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-25 15:50:40,382 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 996 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 2104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:40,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 984 Invalid, 2104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1830 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-25 15:50:40,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-11-25 15:50:40,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 336. [2022-11-25 15:50:40,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 266 states have (on average 1.5413533834586466) internal successors, (410), 271 states have internal predecessors, (410), 49 states have call successors, (49), 16 states have call predecessors, (49), 20 states have return successors, (60), 48 states have call predecessors, (60), 48 states have call successors, (60) [2022-11-25 15:50:40,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 519 transitions. [2022-11-25 15:50:40,424 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 519 transitions. Word has length 115 [2022-11-25 15:50:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:40,424 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 519 transitions. [2022-11-25 15:50:40,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 15:50:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 519 transitions. [2022-11-25 15:50:40,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 15:50:40,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:40,427 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:40,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:50:40,428 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:40,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:40,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1790777211, now seen corresponding path program 1 times [2022-11-25 15:50:40,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:40,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993145646] [2022-11-25 15:50:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:40,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:40,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:40,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:40,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:40,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:50:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:40,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:50:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:40,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:50:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:40,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 15:50:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:40,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 15:50:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:40,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:50:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:40,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 15:50:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:40,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 15:50:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:40,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-25 15:50:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 15:50:40,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:40,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993145646] [2022-11-25 15:50:40,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993145646] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:50:40,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335175871] [2022-11-25 15:50:40,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:40,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:50:40,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:50:40,863 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:50:40,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 15:50:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:41,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:50:41,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:50:41,259 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 15:50:41,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:50:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 15:50:41,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335175871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:50:41,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:50:41,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-11-25 15:50:41,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275361429] [2022-11-25 15:50:41,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:50:41,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 15:50:41,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:41,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 15:50:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:50:41,378 INFO L87 Difference]: Start difference. First operand 336 states and 519 transitions. Second operand has 15 states, 14 states have (on average 8.857142857142858) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-25 15:50:45,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:45,394 INFO L93 Difference]: Finished difference Result 1423 states and 2380 transitions. [2022-11-25 15:50:45,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 15:50:45,395 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.857142857142858) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 115 [2022-11-25 15:50:45,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:45,403 INFO L225 Difference]: With dead ends: 1423 [2022-11-25 15:50:45,403 INFO L226 Difference]: Without dead ends: 1118 [2022-11-25 15:50:45,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-11-25 15:50:45,407 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 2800 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 4425 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2802 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 5383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 4425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:45,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2802 Valid, 3137 Invalid, 5383 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [958 Valid, 4425 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-25 15:50:45,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2022-11-25 15:50:45,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 664. [2022-11-25 15:50:45,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 530 states have (on average 1.5867924528301887) internal successors, (841), 535 states have internal predecessors, (841), 113 states have call successors, (113), 16 states have call predecessors, (113), 20 states have return successors, (134), 112 states have call predecessors, (134), 112 states have call successors, (134) [2022-11-25 15:50:45,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1088 transitions. [2022-11-25 15:50:45,510 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1088 transitions. Word has length 115 [2022-11-25 15:50:45,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:45,511 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 1088 transitions. [2022-11-25 15:50:45,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.857142857142858) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-25 15:50:45,511 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1088 transitions. [2022-11-25 15:50:45,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-25 15:50:45,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:45,515 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:45,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:50:45,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34c7fdd2-cd6b-4997-a97d-c691f0a9feaf/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:50:45,727 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:45,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:45,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1228091855, now seen corresponding path program 1 times [2022-11-25 15:50:45,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:45,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680515199] [2022-11-25 15:50:45,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:45,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:45,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:45,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:45,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:45,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:50:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:45,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:50:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:45,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:50:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:45,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 15:50:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:45,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:50:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:45,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 15:50:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:45,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 15:50:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:45,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:50:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:45,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 15:50:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 15:50:45,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:45,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680515199] [2022-11-25 15:50:45,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680515199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:45,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:50:45,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:50:45,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263291782] [2022-11-25 15:50:45,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:45,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:50:45,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:45,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:50:45,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:50:45,906 INFO L87 Difference]: Start difference. First operand 664 states and 1088 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:47,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:47,633 INFO L93 Difference]: Finished difference Result 1659 states and 2783 transitions. [2022-11-25 15:50:47,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:50:47,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2022-11-25 15:50:47,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:47,647 INFO L225 Difference]: With dead ends: 1659 [2022-11-25 15:50:47,647 INFO L226 Difference]: Without dead ends: 1073 [2022-11-25 15:50:47,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:50:47,655 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 978 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:47,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 847 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 15:50:47,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-11-25 15:50:47,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 964. [2022-11-25 15:50:47,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 766 states have (on average 1.6005221932114881) internal successors, (1226), 771 states have internal predecessors, (1226), 177 states have call successors, (177), 16 states have call predecessors, (177), 20 states have return successors, (208), 176 states have call predecessors, (208), 176 states have call successors, (208) [2022-11-25 15:50:47,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1611 transitions. [2022-11-25 15:50:47,817 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1611 transitions. Word has length 118 [2022-11-25 15:50:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:47,818 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1611 transitions. [2022-11-25 15:50:47,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1611 transitions. [2022-11-25 15:50:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-25 15:50:47,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:47,831 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:47,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:50:47,832 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:47,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:47,833 INFO L85 PathProgramCache]: Analyzing trace with hash -340585153, now seen corresponding path program 1 times [2022-11-25 15:50:47,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:47,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737685521] [2022-11-25 15:50:47,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:47,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:47,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:47,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:47,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:47,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:50:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:47,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:50:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:50:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:47,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:50:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:47,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:50:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:47,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 15:50:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:47,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 15:50:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:47,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 15:50:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:47,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 15:50:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 15:50:47,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:47,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737685521] [2022-11-25 15:50:47,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737685521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:47,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:50:47,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:50:48,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683297588] [2022-11-25 15:50:48,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:48,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:50:48,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:48,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:50:48,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:50:48,002 INFO L87 Difference]: Start difference. First operand 964 states and 1611 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:49,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:49,730 INFO L93 Difference]: Finished difference Result 2399 states and 4063 transitions. [2022-11-25 15:50:49,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:50:49,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-11-25 15:50:49,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:49,743 INFO L225 Difference]: With dead ends: 2399 [2022-11-25 15:50:49,743 INFO L226 Difference]: Without dead ends: 1566 [2022-11-25 15:50:49,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:50:49,749 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 975 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:49,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 822 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 15:50:49,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2022-11-25 15:50:49,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1457. [2022-11-25 15:50:49,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1164 states have (on average 1.604810996563574) internal successors, (1868), 1169 states have internal predecessors, (1868), 272 states have call successors, (272), 16 states have call predecessors, (272), 20 states have return successors, (303), 271 states have call predecessors, (303), 271 states have call successors, (303) [2022-11-25 15:50:49,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2443 transitions. [2022-11-25 15:50:49,978 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2443 transitions. Word has length 119 [2022-11-25 15:50:49,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:49,978 INFO L495 AbstractCegarLoop]: Abstraction has 1457 states and 2443 transitions. [2022-11-25 15:50:49,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:49,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2443 transitions. [2022-11-25 15:50:49,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-25 15:50:49,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:49,987 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:49,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 15:50:49,988 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:49,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:49,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1853840995, now seen corresponding path program 1 times [2022-11-25 15:50:49,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:49,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119799775] [2022-11-25 15:50:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:49,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:50,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:50,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:50,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:50,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:50:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:50,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:50:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:50,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:50:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:50,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 15:50:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:50,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 15:50:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:50,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-25 15:50:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 15:50:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:50,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 15:50:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:50,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-25 15:50:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 15:50:50,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:50,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119799775] [2022-11-25 15:50:50,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119799775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:50,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:50:50,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:50:50,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735561170] [2022-11-25 15:50:50,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:50,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:50:50,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:50,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:50:50,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:50:50,135 INFO L87 Difference]: Start difference. First operand 1457 states and 2443 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:51,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:51,947 INFO L93 Difference]: Finished difference Result 3501 states and 5981 transitions. [2022-11-25 15:50:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:50:51,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-11-25 15:50:51,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:51,963 INFO L225 Difference]: With dead ends: 3501 [2022-11-25 15:50:51,963 INFO L226 Difference]: Without dead ends: 2310 [2022-11-25 15:50:51,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:50:51,969 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 973 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:51,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 822 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 15:50:51,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2022-11-25 15:50:52,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2201. [2022-11-25 15:50:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 1785 states have (on average 1.6084033613445379) internal successors, (2871), 1790 states have internal predecessors, (2871), 395 states have call successors, (395), 16 states have call predecessors, (395), 20 states have return successors, (442), 394 states have call predecessors, (442), 394 states have call successors, (442) [2022-11-25 15:50:52,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3708 transitions. [2022-11-25 15:50:52,278 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3708 transitions. Word has length 120 [2022-11-25 15:50:52,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:52,278 INFO L495 AbstractCegarLoop]: Abstraction has 2201 states and 3708 transitions. [2022-11-25 15:50:52,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3708 transitions. [2022-11-25 15:50:52,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-25 15:50:52,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:52,289 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:52,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 15:50:52,290 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:52,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:52,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1617382594, now seen corresponding path program 1 times [2022-11-25 15:50:52,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:52,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415375978] [2022-11-25 15:50:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:52,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:52,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:52,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:52,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:52,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:50:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:52,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:50:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:52,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:50:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:52,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 15:50:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:52,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:50:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:52,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 15:50:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:52,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 15:50:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:52,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 15:50:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:52,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 15:50:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 15:50:52,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:52,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415375978] [2022-11-25 15:50:52,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415375978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:52,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:50:52,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:50:52,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52707817] [2022-11-25 15:50:52,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:52,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:50:52,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:52,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:50:52,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:50:52,437 INFO L87 Difference]: Start difference. First operand 2201 states and 3708 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:54,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:54,390 INFO L93 Difference]: Finished difference Result 5210 states and 8961 transitions. [2022-11-25 15:50:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:50:54,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-11-25 15:50:54,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:54,411 INFO L225 Difference]: With dead ends: 5210 [2022-11-25 15:50:54,411 INFO L226 Difference]: Without dead ends: 3494 [2022-11-25 15:50:54,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:50:54,419 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 971 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:54,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 822 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 15:50:54,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2022-11-25 15:50:54,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 3385. [2022-11-25 15:50:54,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3385 states, 2790 states have (on average 1.610394265232975) internal successors, (4493), 2795 states have internal predecessors, (4493), 574 states have call successors, (574), 16 states have call predecessors, (574), 20 states have return successors, (647), 573 states have call predecessors, (647), 573 states have call successors, (647) [2022-11-25 15:50:54,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3385 states to 3385 states and 5714 transitions. [2022-11-25 15:50:54,868 INFO L78 Accepts]: Start accepts. Automaton has 3385 states and 5714 transitions. Word has length 121 [2022-11-25 15:50:54,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:54,868 INFO L495 AbstractCegarLoop]: Abstraction has 3385 states and 5714 transitions. [2022-11-25 15:50:54,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:54,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3385 states and 5714 transitions. [2022-11-25 15:50:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-25 15:50:54,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:54,880 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:54,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 15:50:54,881 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:54,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:54,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1042849497, now seen corresponding path program 1 times [2022-11-25 15:50:54,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:54,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420041299] [2022-11-25 15:50:54,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:54,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:54,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:54,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:54,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:54,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:50:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:54,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:50:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:54,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:50:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:54,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 15:50:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:54,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 15:50:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:54,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 15:50:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:55,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-25 15:50:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:55,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 15:50:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:55,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-25 15:50:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 15:50:55,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:55,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420041299] [2022-11-25 15:50:55,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420041299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:55,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:50:55,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:50:55,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994883529] [2022-11-25 15:50:55,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:55,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:50:55,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:55,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:50:55,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:50:55,010 INFO L87 Difference]: Start difference. First operand 3385 states and 5714 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:56,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:56,968 INFO L93 Difference]: Finished difference Result 8283 states and 14277 transitions. [2022-11-25 15:50:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:50:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2022-11-25 15:50:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:57,001 INFO L225 Difference]: With dead ends: 8283 [2022-11-25 15:50:57,001 INFO L226 Difference]: Without dead ends: 5635 [2022-11-25 15:50:57,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:50:57,011 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 970 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:57,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 847 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 15:50:57,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5635 states. [2022-11-25 15:50:57,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5635 to 5526. [2022-11-25 15:50:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5526 states, 4555 states have (on average 1.6024149286498353) internal successors, (7299), 4560 states have internal predecessors, (7299), 950 states have call successors, (950), 16 states have call predecessors, (950), 20 states have return successors, (1067), 949 states have call predecessors, (1067), 949 states have call successors, (1067) [2022-11-25 15:50:57,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5526 states to 5526 states and 9316 transitions. [2022-11-25 15:50:57,939 INFO L78 Accepts]: Start accepts. Automaton has 5526 states and 9316 transitions. Word has length 122 [2022-11-25 15:50:57,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:57,940 INFO L495 AbstractCegarLoop]: Abstraction has 5526 states and 9316 transitions. [2022-11-25 15:50:57,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:50:57,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5526 states and 9316 transitions. [2022-11-25 15:50:57,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-25 15:50:57,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:57,960 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:57,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 15:50:57,961 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:50:57,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:57,961 INFO L85 PathProgramCache]: Analyzing trace with hash 168070266, now seen corresponding path program 1 times [2022-11-25 15:50:57,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:57,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182490468] [2022-11-25 15:50:57,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:57,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:58,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:50:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:58,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:50:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:58,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:50:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:58,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:50:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:58,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:50:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:58,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:50:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:58,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:50:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:58,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 15:50:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:58,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 15:50:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:58,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 15:50:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:58,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-25 15:50:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:58,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 15:50:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:58,102 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 15:50:58,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:58,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182490468] [2022-11-25 15:50:58,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182490468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:58,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:50:58,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:50:58,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6798856] [2022-11-25 15:50:58,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:58,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:50:58,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:58,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:50:58,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:50:58,107 INFO L87 Difference]: Start difference. First operand 5526 states and 9316 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:51:00,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:00,778 INFO L93 Difference]: Finished difference Result 13705 states and 23578 transitions. [2022-11-25 15:51:00,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:51:00,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2022-11-25 15:51:00,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:51:00,832 INFO L225 Difference]: With dead ends: 13705 [2022-11-25 15:51:00,832 INFO L226 Difference]: Without dead ends: 9318 [2022-11-25 15:51:00,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:51:00,852 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 968 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:51:00,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 826 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 15:51:00,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9318 states. [2022-11-25 15:51:02,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9318 to 9209. [2022-11-25 15:51:02,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9209 states, 7632 states have (on average 1.5993186582809225) internal successors, (12206), 7637 states have internal predecessors, (12206), 1556 states have call successors, (1556), 16 states have call predecessors, (1556), 20 states have return successors, (1751), 1555 states have call predecessors, (1751), 1555 states have call successors, (1751) [2022-11-25 15:51:02,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9209 states to 9209 states and 15513 transitions. [2022-11-25 15:51:02,089 INFO L78 Accepts]: Start accepts. Automaton has 9209 states and 15513 transitions. Word has length 123 [2022-11-25 15:51:02,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:51:02,089 INFO L495 AbstractCegarLoop]: Abstraction has 9209 states and 15513 transitions. [2022-11-25 15:51:02,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:51:02,090 INFO L276 IsEmpty]: Start isEmpty. Operand 9209 states and 15513 transitions. [2022-11-25 15:51:02,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-25 15:51:02,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:02,115 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:02,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 15:51:02,115 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:51:02,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:02,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1826424603, now seen corresponding path program 1 times [2022-11-25 15:51:02,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:02,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425792359] [2022-11-25 15:51:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:02,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:02,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:02,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:51:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:02,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:51:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:02,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:51:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:02,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:51:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:02,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:51:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:02,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:51:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:02,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-25 15:51:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:02,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 15:51:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:02,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:51:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:02,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-25 15:51:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:02,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-25 15:51:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:02,252 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 15:51:02,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:02,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425792359] [2022-11-25 15:51:02,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425792359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:02,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:02,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:51:02,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576895521] [2022-11-25 15:51:02,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:02,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:51:02,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:02,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:51:02,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:51:02,256 INFO L87 Difference]: Start difference. First operand 9209 states and 15513 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:51:05,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:05,481 INFO L93 Difference]: Finished difference Result 23889 states and 41019 transitions. [2022-11-25 15:51:05,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:51:05,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2022-11-25 15:51:05,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:51:05,559 INFO L225 Difference]: With dead ends: 23889 [2022-11-25 15:51:05,559 INFO L226 Difference]: Without dead ends: 16271 [2022-11-25 15:51:05,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:51:05,589 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 966 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:51:05,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 845 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 15:51:05,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16271 states. [2022-11-25 15:51:07,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16271 to 16162. [2022-11-25 15:51:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16162 states, 13382 states have (on average 1.5898968764011359) internal successors, (21276), 13387 states have internal predecessors, (21276), 2759 states have call successors, (2759), 16 states have call predecessors, (2759), 20 states have return successors, (3098), 2758 states have call predecessors, (3098), 2758 states have call successors, (3098) [2022-11-25 15:51:07,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16162 states to 16162 states and 27133 transitions. [2022-11-25 15:51:07,340 INFO L78 Accepts]: Start accepts. Automaton has 16162 states and 27133 transitions. Word has length 124 [2022-11-25 15:51:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:51:07,340 INFO L495 AbstractCegarLoop]: Abstraction has 16162 states and 27133 transitions. [2022-11-25 15:51:07,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:51:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 16162 states and 27133 transitions. [2022-11-25 15:51:07,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-25 15:51:07,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:07,365 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:07,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 15:51:07,366 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:51:07,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:07,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1043147481, now seen corresponding path program 1 times [2022-11-25 15:51:07,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:07,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039803837] [2022-11-25 15:51:07,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:07,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:07,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:07,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:51:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:51:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:51:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:51:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:07,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:51:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:07,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 15:51:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:07,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 15:51:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:07,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-25 15:51:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:07,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 15:51:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:07,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 15:51:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:07,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 15:51:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 15:51:07,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:07,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039803837] [2022-11-25 15:51:07,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039803837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:07,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:07,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:51:07,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833514606] [2022-11-25 15:51:07,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:07,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:51:07,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:51:07,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:51:07,499 INFO L87 Difference]: Start difference. First operand 16162 states and 27133 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:51:12,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:12,249 INFO L93 Difference]: Finished difference Result 42855 states and 73416 transitions. [2022-11-25 15:51:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:51:12,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2022-11-25 15:51:12,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:51:12,392 INFO L225 Difference]: With dead ends: 42855 [2022-11-25 15:51:12,393 INFO L226 Difference]: Without dead ends: 28926 [2022-11-25 15:51:12,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:51:12,436 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 964 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:51:12,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 823 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 15:51:12,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28926 states. [2022-11-25 15:51:15,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28926 to 28817. [2022-11-25 15:51:15,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28817 states, 23998 states have (on average 1.5852571047587298) internal successors, (38043), 24003 states have internal predecessors, (38043), 4798 states have call successors, (4798), 16 states have call predecessors, (4798), 20 states have return successors, (5411), 4797 states have call predecessors, (5411), 4797 states have call successors, (5411) [2022-11-25 15:51:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28817 states to 28817 states and 48252 transitions. [2022-11-25 15:51:16,053 INFO L78 Accepts]: Start accepts. Automaton has 28817 states and 48252 transitions. Word has length 125 [2022-11-25 15:51:16,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:51:16,053 INFO L495 AbstractCegarLoop]: Abstraction has 28817 states and 48252 transitions. [2022-11-25 15:51:16,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:51:16,054 INFO L276 IsEmpty]: Start isEmpty. Operand 28817 states and 48252 transitions. [2022-11-25 15:51:16,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-25 15:51:16,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:16,096 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:16,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 15:51:16,097 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:51:16,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:16,097 INFO L85 PathProgramCache]: Analyzing trace with hash -472439741, now seen corresponding path program 1 times [2022-11-25 15:51:16,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:16,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223120524] [2022-11-25 15:51:16,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:16,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:16,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:51:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:16,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:51:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:16,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:51:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:16,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:51:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:16,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:51:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:16,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:51:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:16,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 15:51:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:16,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 15:51:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:16,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 15:51:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:16,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 15:51:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:16,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-25 15:51:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 15:51:16,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:16,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223120524] [2022-11-25 15:51:16,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223120524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:16,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:16,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:51:16,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565565451] [2022-11-25 15:51:16,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:16,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:51:16,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:16,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:51:16,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:51:16,282 INFO L87 Difference]: Start difference. First operand 28817 states and 48252 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:51:23,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:23,632 INFO L93 Difference]: Finished difference Result 78617 states and 133780 transitions. [2022-11-25 15:51:23,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:51:23,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 126 [2022-11-25 15:51:23,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:51:23,889 INFO L225 Difference]: With dead ends: 78617 [2022-11-25 15:51:23,889 INFO L226 Difference]: Without dead ends: 52805 [2022-11-25 15:51:23,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:51:23,960 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 961 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:51:23,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 838 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 15:51:24,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52805 states. [2022-11-25 15:51:30,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52805 to 52696. [2022-11-25 15:51:30,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52696 states, 44162 states have (on average 1.579321588696164) internal successors, (69746), 44167 states have internal predecessors, (69746), 8513 states have call successors, (8513), 16 states have call predecessors, (8513), 20 states have return successors, (9658), 8512 states have call predecessors, (9658), 8512 states have call successors, (9658) [2022-11-25 15:51:30,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52696 states to 52696 states and 87917 transitions. [2022-11-25 15:51:30,784 INFO L78 Accepts]: Start accepts. Automaton has 52696 states and 87917 transitions. Word has length 126 [2022-11-25 15:51:30,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:51:30,784 INFO L495 AbstractCegarLoop]: Abstraction has 52696 states and 87917 transitions. [2022-11-25 15:51:30,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 15:51:30,785 INFO L276 IsEmpty]: Start isEmpty. Operand 52696 states and 87917 transitions. [2022-11-25 15:51:30,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-25 15:51:30,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:30,822 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:30,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 15:51:30,823 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:51:30,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:30,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2014873017, now seen corresponding path program 1 times [2022-11-25 15:51:30,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:30,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522622185] [2022-11-25 15:51:30,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:30,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 15:51:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:51:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 15:51:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:51:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:51:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-25 15:51:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 15:51:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-25 15:51:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 15:51:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-25 15:51:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-25 15:51:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 15:51:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 15:51:30,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:30,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522622185] [2022-11-25 15:51:30,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522622185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:30,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:30,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:51:30,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494640357] [2022-11-25 15:51:30,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:30,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:51:30,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:30,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:51:30,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:51:30,964 INFO L87 Difference]: Start difference. First operand 52696 states and 87917 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)