./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7d97141912edf4d560524a4fad707a432ae86320ba1bcf5df7fccfaf2185109 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:30:18,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:30:18,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:30:18,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:30:18,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:30:18,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:30:18,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:30:18,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:30:18,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:30:18,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:30:18,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:30:18,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:30:18,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:30:18,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:30:18,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:30:18,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:30:18,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:30:18,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:30:18,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:30:18,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:30:18,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:30:18,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:30:18,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:30:18,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:30:18,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:30:18,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:30:18,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:30:18,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:30:18,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:30:18,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:30:18,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:30:18,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:30:18,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:30:18,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:30:18,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:30:18,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:30:18,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:30:18,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:30:18,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:30:18,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:30:18,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:30:18,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:30:18,738 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:30:18,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:30:18,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:30:18,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:30:18,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:30:18,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:30:18,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:30:18,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:30:18,745 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:30:18,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:30:18,746 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:30:18,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:30:18,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:30:18,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:30:18,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:30:18,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:30:18,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:30:18,748 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:30:18,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:30:18,748 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:30:18,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:30:18,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:30:18,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:30:18,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:30:18,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:30:18,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:30:18,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:30:18,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:30:18,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:30:18,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:30:18,751 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:30:18,751 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:30:18,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:30:18,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7d97141912edf4d560524a4fad707a432ae86320ba1bcf5df7fccfaf2185109 [2022-11-18 20:30:19,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:30:19,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:30:19,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:30:19,049 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:30:19,050 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:30:19,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/eca-rers2012/Problem12_label51.c [2022-11-18 20:30:19,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/data/dc95593ca/60fd70b903614d7e84ba27859a1c78d6/FLAG9e4a26650 [2022-11-18 20:30:19,903 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:30:19,903 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/sv-benchmarks/c/eca-rers2012/Problem12_label51.c [2022-11-18 20:30:19,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/data/dc95593ca/60fd70b903614d7e84ba27859a1c78d6/FLAG9e4a26650 [2022-11-18 20:30:19,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/data/dc95593ca/60fd70b903614d7e84ba27859a1c78d6 [2022-11-18 20:30:19,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:30:19,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:30:19,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:30:19,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:30:19,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:30:19,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:30:19" (1/1) ... [2022-11-18 20:30:19,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53832cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:19, skipping insertion in model container [2022-11-18 20:30:19,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:30:19" (1/1) ... [2022-11-18 20:30:20,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:30:20,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:30:20,383 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/sv-benchmarks/c/eca-rers2012/Problem12_label51.c[1794,1807] [2022-11-18 20:30:21,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:30:21,408 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:30:21,440 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/sv-benchmarks/c/eca-rers2012/Problem12_label51.c[1794,1807] [2022-11-18 20:30:22,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:30:22,093 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:30:22,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:22 WrapperNode [2022-11-18 20:30:22,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:30:22,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:30:22,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:30:22,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:30:22,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:22" (1/1) ... [2022-11-18 20:30:22,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:22" (1/1) ... [2022-11-18 20:30:22,545 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-11-18 20:30:22,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:30:22,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:30:22,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:30:22,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:30:22,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:22" (1/1) ... [2022-11-18 20:30:22,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:22" (1/1) ... [2022-11-18 20:30:22,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:22" (1/1) ... [2022-11-18 20:30:22,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:22" (1/1) ... [2022-11-18 20:30:22,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:22" (1/1) ... [2022-11-18 20:30:22,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:22" (1/1) ... [2022-11-18 20:30:22,906 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:22" (1/1) ... [2022-11-18 20:30:22,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:22" (1/1) ... [2022-11-18 20:30:22,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:30:22,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:30:22,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:30:22,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:30:22,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:22" (1/1) ... [2022-11-18 20:30:23,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:30:23,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:23,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:30:23,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:30:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:30:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:30:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:30:23,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:30:23,237 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:30:23,240 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:30:28,617 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:30:28,639 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:30:28,639 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:30:28,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:30:28 BoogieIcfgContainer [2022-11-18 20:30:28,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:30:28,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:30:28,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:30:28,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:30:28,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:30:19" (1/3) ... [2022-11-18 20:30:28,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6bd8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:30:28, skipping insertion in model container [2022-11-18 20:30:28,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:22" (2/3) ... [2022-11-18 20:30:28,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6bd8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:30:28, skipping insertion in model container [2022-11-18 20:30:28,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:30:28" (3/3) ... [2022-11-18 20:30:28,656 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label51.c [2022-11-18 20:30:28,677 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:30:28,677 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:30:28,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:30:28,809 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;@47c2e35a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:30:28,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:30:28,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 20:30:28,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:28,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:28,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:30:28,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:28,834 INFO L85 PathProgramCache]: Analyzing trace with hash -988188511, now seen corresponding path program 1 times [2022-11-18 20:30:28,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:28,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590320181] [2022-11-18 20:30:28,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:28,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:29,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:29,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:29,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590320181] [2022-11-18 20:30:29,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590320181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:29,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:29,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:30:29,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611260179] [2022-11-18 20:30:29,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:29,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:30:29,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:29,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:30:29,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:30:29,349 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:37,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:37,277 INFO L93 Difference]: Finished difference Result 3155 states and 6150 transitions. [2022-11-18 20:30:37,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:30:37,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 20:30:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:37,305 INFO L225 Difference]: With dead ends: 3155 [2022-11-18 20:30:37,306 INFO L226 Difference]: Without dead ends: 2265 [2022-11-18 20:30:37,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:30:37,317 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 2474 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 1719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 5453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1719 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:37,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 234 Invalid, 5453 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1719 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-18 20:30:37,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2022-11-18 20:30:37,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2257. [2022-11-18 20:30:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.5350177304964538) internal successors, (3463), 2256 states have internal predecessors, (3463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3463 transitions. [2022-11-18 20:30:37,441 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3463 transitions. Word has length 11 [2022-11-18 20:30:37,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:37,442 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3463 transitions. [2022-11-18 20:30:37,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:37,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3463 transitions. [2022-11-18 20:30:37,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-18 20:30:37,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:37,447 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:37,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:30:37,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:30:37,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:37,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1639014020, now seen corresponding path program 1 times [2022-11-18 20:30:37,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:37,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571936306] [2022-11-18 20:30:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:37,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:38,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:38,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571936306] [2022-11-18 20:30:38,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571936306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:38,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:38,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:30:38,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448367601] [2022-11-18 20:30:38,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:38,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:30:38,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:38,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:30:38,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:30:38,049 INFO L87 Difference]: Start difference. First operand 2257 states and 3463 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:43,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:43,613 INFO L93 Difference]: Finished difference Result 6051 states and 9664 transitions. [2022-11-18 20:30:43,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:30:43,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-11-18 20:30:43,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:43,631 INFO L225 Difference]: With dead ends: 6051 [2022-11-18 20:30:43,631 INFO L226 Difference]: Without dead ends: 3759 [2022-11-18 20:30:43,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:30:43,637 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 704 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 3836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:43,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 708 Invalid, 3836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-18 20:30:43,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2022-11-18 20:30:43,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3759. [2022-11-18 20:30:43,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.3408728046833422) internal successors, (5039), 3758 states have internal predecessors, (5039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5039 transitions. [2022-11-18 20:30:43,711 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5039 transitions. Word has length 151 [2022-11-18 20:30:43,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:43,715 INFO L495 AbstractCegarLoop]: Abstraction has 3759 states and 5039 transitions. [2022-11-18 20:30:43,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:43,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5039 transitions. [2022-11-18 20:30:43,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-18 20:30:43,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:43,731 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:30:43,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:30:43,733 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:30:43,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:43,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1288793869, now seen corresponding path program 1 times [2022-11-18 20:30:43,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:43,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296986831] [2022-11-18 20:30:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:43,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-18 20:30:44,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:44,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296986831] [2022-11-18 20:30:44,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296986831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:44,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:44,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:30:44,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086489735] [2022-11-18 20:30:44,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:44,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:30:44,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:44,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:30:44,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:44,143 INFO L87 Difference]: Start difference. First operand 3759 states and 5039 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:48,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:48,192 INFO L93 Difference]: Finished difference Result 10520 states and 14356 transitions. [2022-11-18 20:30:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:30:48,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2022-11-18 20:30:48,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:48,217 INFO L225 Difference]: With dead ends: 10520 [2022-11-18 20:30:48,217 INFO L226 Difference]: Without dead ends: 6763 [2022-11-18 20:30:48,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:48,224 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 669 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 845 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:48,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 486 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [845 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-18 20:30:48,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-11-18 20:30:48,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6012. [2022-11-18 20:30:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 1.2814839460988188) internal successors, (7703), 6011 states have internal predecessors, (7703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:48,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 7703 transitions. [2022-11-18 20:30:48,338 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 7703 transitions. Word has length 221 [2022-11-18 20:30:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:48,340 INFO L495 AbstractCegarLoop]: Abstraction has 6012 states and 7703 transitions. [2022-11-18 20:30:48,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:48,341 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 7703 transitions. [2022-11-18 20:30:48,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-18 20:30:48,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:48,346 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:30:48,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:30:48,347 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:30:48,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:48,348 INFO L85 PathProgramCache]: Analyzing trace with hash 204077554, now seen corresponding path program 1 times [2022-11-18 20:30:48,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:48,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576050161] [2022-11-18 20:30:48,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:48,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 17 proven. 54 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 20:30:48,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:48,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576050161] [2022-11-18 20:30:48,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576050161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:48,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360669947] [2022-11-18 20:30:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:48,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:48,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:48,995 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:49,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:30:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:49,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:30:49,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:49,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:30:49,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360669947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:49,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:30:49,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-18 20:30:49,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364158982] [2022-11-18 20:30:49,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:49,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:30:49,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:49,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:30:49,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:30:49,376 INFO L87 Difference]: Start difference. First operand 6012 states and 7703 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:53,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:53,473 INFO L93 Difference]: Finished difference Result 15026 states and 19934 transitions. [2022-11-18 20:30:53,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:30:53,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2022-11-18 20:30:53,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:53,502 INFO L225 Difference]: With dead ends: 15026 [2022-11-18 20:30:53,502 INFO L226 Difference]: Without dead ends: 9016 [2022-11-18 20:30:53,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:30:53,510 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 908 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:53,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 309 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2072 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-18 20:30:53,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9016 states. [2022-11-18 20:30:53,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9016 to 9016. [2022-11-18 20:30:53,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9016 states, 9015 states have (on average 1.2657792567942319) internal successors, (11411), 9015 states have internal predecessors, (11411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9016 states to 9016 states and 11411 transitions. [2022-11-18 20:30:53,677 INFO L78 Accepts]: Start accepts. Automaton has 9016 states and 11411 transitions. Word has length 234 [2022-11-18 20:30:53,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:53,678 INFO L495 AbstractCegarLoop]: Abstraction has 9016 states and 11411 transitions. [2022-11-18 20:30:53,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:53,678 INFO L276 IsEmpty]: Start isEmpty. Operand 9016 states and 11411 transitions. [2022-11-18 20:30:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-18 20:30:53,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:53,682 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:30:53,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:30:53,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:53,888 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:30:53,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:53,889 INFO L85 PathProgramCache]: Analyzing trace with hash 740515512, now seen corresponding path program 1 times [2022-11-18 20:30:53,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:53,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764715118] [2022-11-18 20:30:53,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:53,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-18 20:30:54,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:54,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764715118] [2022-11-18 20:30:54,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764715118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:54,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:54,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:30:54,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573518118] [2022-11-18 20:30:54,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:54,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:30:54,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:54,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:30:54,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:54,209 INFO L87 Difference]: Start difference. First operand 9016 states and 11411 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:58,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:58,030 INFO L93 Difference]: Finished difference Result 21785 states and 27827 transitions. [2022-11-18 20:30:58,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:30:58,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 251 [2022-11-18 20:30:58,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:58,068 INFO L225 Difference]: With dead ends: 21785 [2022-11-18 20:30:58,069 INFO L226 Difference]: Without dead ends: 12771 [2022-11-18 20:30:58,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:58,078 INFO L413 NwaCegarLoop]: 1208 mSDtfsCounter, 764 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:58,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1216 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-18 20:30:58,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12771 states. [2022-11-18 20:30:58,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12771 to 12771. [2022-11-18 20:30:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12771 states, 12770 states have (on average 1.183868441660141) internal successors, (15118), 12770 states have internal predecessors, (15118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:58,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12771 states to 12771 states and 15118 transitions. [2022-11-18 20:30:58,302 INFO L78 Accepts]: Start accepts. Automaton has 12771 states and 15118 transitions. Word has length 251 [2022-11-18 20:30:58,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:58,303 INFO L495 AbstractCegarLoop]: Abstraction has 12771 states and 15118 transitions. [2022-11-18 20:30:58,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 12771 states and 15118 transitions. [2022-11-18 20:30:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-18 20:30:58,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:58,310 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:30:58,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:30:58,310 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:30:58,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:58,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1278477418, now seen corresponding path program 1 times [2022-11-18 20:30:58,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:58,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957519669] [2022-11-18 20:30:58,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:58,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:30:58,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:58,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957519669] [2022-11-18 20:30:58,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957519669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:58,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:58,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:30:58,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098186651] [2022-11-18 20:30:58,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:58,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:30:58,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:58,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:30:58,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:58,745 INFO L87 Difference]: Start difference. First operand 12771 states and 15118 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:03,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:03,103 INFO L93 Difference]: Finished difference Result 36054 states and 43062 transitions. [2022-11-18 20:31:03,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:03,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2022-11-18 20:31:03,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:03,151 INFO L225 Difference]: With dead ends: 36054 [2022-11-18 20:31:03,151 INFO L226 Difference]: Without dead ends: 23285 [2022-11-18 20:31:03,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:03,165 INFO L413 NwaCegarLoop]: 1215 mSDtfsCounter, 639 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:03,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1223 Invalid, 3004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-18 20:31:03,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23285 states. [2022-11-18 20:31:03,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23285 to 22534. [2022-11-18 20:31:03,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22534 states, 22533 states have (on average 1.1720143789109307) internal successors, (26409), 22533 states have internal predecessors, (26409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22534 states to 22534 states and 26409 transitions. [2022-11-18 20:31:03,706 INFO L78 Accepts]: Start accepts. Automaton has 22534 states and 26409 transitions. Word has length 338 [2022-11-18 20:31:03,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:03,709 INFO L495 AbstractCegarLoop]: Abstraction has 22534 states and 26409 transitions. [2022-11-18 20:31:03,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:03,709 INFO L276 IsEmpty]: Start isEmpty. Operand 22534 states and 26409 transitions. [2022-11-18 20:31:03,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-18 20:31:03,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:03,719 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:31:03,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:31:03,719 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:03,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:03,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1344940876, now seen corresponding path program 1 times [2022-11-18 20:31:03,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:03,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994016989] [2022-11-18 20:31:03,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:03,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-18 20:31:04,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:04,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994016989] [2022-11-18 20:31:04,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994016989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:04,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:04,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:04,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940303887] [2022-11-18 20:31:04,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:04,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:04,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:04,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:04,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:04,423 INFO L87 Difference]: Start difference. First operand 22534 states and 26409 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:07,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:07,954 INFO L93 Difference]: Finished difference Result 51074 states and 59608 transitions. [2022-11-18 20:31:07,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:07,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 342 [2022-11-18 20:31:07,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:08,008 INFO L225 Difference]: With dead ends: 51074 [2022-11-18 20:31:08,009 INFO L226 Difference]: Without dead ends: 28542 [2022-11-18 20:31:08,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:08,026 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 829 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:08,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 969 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-18 20:31:08,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28542 states. [2022-11-18 20:31:08,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28542 to 27040. [2022-11-18 20:31:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27040 states, 27039 states have (on average 1.144716890417545) internal successors, (30952), 27039 states have internal predecessors, (30952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:08,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27040 states to 27040 states and 30952 transitions. [2022-11-18 20:31:08,435 INFO L78 Accepts]: Start accepts. Automaton has 27040 states and 30952 transitions. Word has length 342 [2022-11-18 20:31:08,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:08,436 INFO L495 AbstractCegarLoop]: Abstraction has 27040 states and 30952 transitions. [2022-11-18 20:31:08,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 27040 states and 30952 transitions. [2022-11-18 20:31:08,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-18 20:31:08,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:08,444 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:08,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:31:08,445 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:08,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:08,445 INFO L85 PathProgramCache]: Analyzing trace with hash -357694838, now seen corresponding path program 1 times [2022-11-18 20:31:08,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:08,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118947834] [2022-11-18 20:31:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:08,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-18 20:31:08,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:08,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118947834] [2022-11-18 20:31:08,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118947834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:08,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:08,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:08,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798263995] [2022-11-18 20:31:08,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:08,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:08,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:08,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:08,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:08,811 INFO L87 Difference]: Start difference. First operand 27040 states and 30952 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:12,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:12,628 INFO L93 Difference]: Finished difference Result 54829 states and 62659 transitions. [2022-11-18 20:31:12,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:12,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 444 [2022-11-18 20:31:12,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:12,673 INFO L225 Difference]: With dead ends: 54829 [2022-11-18 20:31:12,674 INFO L226 Difference]: Without dead ends: 27791 [2022-11-18 20:31:12,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:12,693 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 663 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:12,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 269 Invalid, 2905 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [620 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-18 20:31:12,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27791 states. [2022-11-18 20:31:12,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27791 to 27040. [2022-11-18 20:31:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27040 states, 27039 states have (on average 1.1338437072376937) internal successors, (30658), 27039 states have internal predecessors, (30658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:13,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27040 states to 27040 states and 30658 transitions. [2022-11-18 20:31:13,054 INFO L78 Accepts]: Start accepts. Automaton has 27040 states and 30658 transitions. Word has length 444 [2022-11-18 20:31:13,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:13,055 INFO L495 AbstractCegarLoop]: Abstraction has 27040 states and 30658 transitions. [2022-11-18 20:31:13,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:13,055 INFO L276 IsEmpty]: Start isEmpty. Operand 27040 states and 30658 transitions. [2022-11-18 20:31:13,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-11-18 20:31:13,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:13,063 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:13,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:31:13,063 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:13,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1671865206, now seen corresponding path program 1 times [2022-11-18 20:31:13,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:13,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002916471] [2022-11-18 20:31:13,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:13,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 261 proven. 230 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-18 20:31:13,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:13,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002916471] [2022-11-18 20:31:13,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002916471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:13,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647501763] [2022-11-18 20:31:13,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:13,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:13,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:13,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:13,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:31:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:14,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:31:14,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-18 20:31:14,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:31:14,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647501763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:14,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:31:14,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-18 20:31:14,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775965349] [2022-11-18 20:31:14,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:14,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:14,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:14,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:14,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:31:14,322 INFO L87 Difference]: Start difference. First operand 27040 states and 30658 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:18,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:18,675 INFO L93 Difference]: Finished difference Result 72102 states and 82464 transitions. [2022-11-18 20:31:18,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:18,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 455 [2022-11-18 20:31:18,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:18,733 INFO L225 Difference]: With dead ends: 72102 [2022-11-18 20:31:18,734 INFO L226 Difference]: Without dead ends: 45064 [2022-11-18 20:31:18,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 454 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:31:18,753 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 665 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 3054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:18,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1053 Invalid, 3054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-18 20:31:18,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45064 states. [2022-11-18 20:31:19,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45064 to 45064. [2022-11-18 20:31:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45064 states, 45063 states have (on average 1.141291081374964) internal successors, (51430), 45063 states have internal predecessors, (51430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45064 states to 45064 states and 51430 transitions. [2022-11-18 20:31:19,415 INFO L78 Accepts]: Start accepts. Automaton has 45064 states and 51430 transitions. Word has length 455 [2022-11-18 20:31:19,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:19,416 INFO L495 AbstractCegarLoop]: Abstraction has 45064 states and 51430 transitions. [2022-11-18 20:31:19,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:19,417 INFO L276 IsEmpty]: Start isEmpty. Operand 45064 states and 51430 transitions. [2022-11-18 20:31:19,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2022-11-18 20:31:19,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:19,425 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:19,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:19,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:19,631 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:19,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:19,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1008289624, now seen corresponding path program 1 times [2022-11-18 20:31:19,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:19,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194982825] [2022-11-18 20:31:19,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:19,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:20,039 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 459 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-18 20:31:20,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:20,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194982825] [2022-11-18 20:31:20,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194982825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:20,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:20,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:20,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675461529] [2022-11-18 20:31:20,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:20,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:20,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:20,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:20,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:20,043 INFO L87 Difference]: Start difference. First operand 45064 states and 51430 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:23,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:23,987 INFO L93 Difference]: Finished difference Result 107399 states and 121876 transitions. [2022-11-18 20:31:23,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:23,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 464 [2022-11-18 20:31:23,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:24,043 INFO L225 Difference]: With dead ends: 107399 [2022-11-18 20:31:24,043 INFO L226 Difference]: Without dead ends: 61586 [2022-11-18 20:31:24,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:24,069 INFO L413 NwaCegarLoop]: 1067 mSDtfsCounter, 732 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:24,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 1074 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-18 20:31:24,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61586 states. [2022-11-18 20:31:24,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61586 to 55578. [2022-11-18 20:31:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55578 states, 55577 states have (on average 1.1048275365708837) internal successors, (61403), 55577 states have internal predecessors, (61403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:25,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55578 states to 55578 states and 61403 transitions. [2022-11-18 20:31:25,055 INFO L78 Accepts]: Start accepts. Automaton has 55578 states and 61403 transitions. Word has length 464 [2022-11-18 20:31:25,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:25,055 INFO L495 AbstractCegarLoop]: Abstraction has 55578 states and 61403 transitions. [2022-11-18 20:31:25,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:25,056 INFO L276 IsEmpty]: Start isEmpty. Operand 55578 states and 61403 transitions. [2022-11-18 20:31:25,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-11-18 20:31:25,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:25,077 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:31:25,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:31:25,078 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:25,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:25,079 INFO L85 PathProgramCache]: Analyzing trace with hash 689872906, now seen corresponding path program 1 times [2022-11-18 20:31:25,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:25,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126129849] [2022-11-18 20:31:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:25,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 437 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-18 20:31:25,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:25,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126129849] [2022-11-18 20:31:25,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126129849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:25,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:25,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:25,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077874453] [2022-11-18 20:31:25,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:25,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:25,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:25,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:25,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:25,740 INFO L87 Difference]: Start difference. First operand 55578 states and 61403 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:30,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:30,614 INFO L93 Difference]: Finished difference Result 144198 states and 159788 transitions. [2022-11-18 20:31:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:30,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 515 [2022-11-18 20:31:30,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:30,712 INFO L225 Difference]: With dead ends: 144198 [2022-11-18 20:31:30,712 INFO L226 Difference]: Without dead ends: 89373 [2022-11-18 20:31:30,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:30,750 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 618 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:30,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 460 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-18 20:31:30,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89373 states. [2022-11-18 20:31:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89373 to 87871. [2022-11-18 20:31:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87871 states, 87870 states have (on average 1.0897575964493) internal successors, (95757), 87870 states have internal predecessors, (95757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87871 states to 87871 states and 95757 transitions. [2022-11-18 20:31:31,821 INFO L78 Accepts]: Start accepts. Automaton has 87871 states and 95757 transitions. Word has length 515 [2022-11-18 20:31:31,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:31,822 INFO L495 AbstractCegarLoop]: Abstraction has 87871 states and 95757 transitions. [2022-11-18 20:31:31,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:31,822 INFO L276 IsEmpty]: Start isEmpty. Operand 87871 states and 95757 transitions. [2022-11-18 20:31:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2022-11-18 20:31:31,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:31,839 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:31:31,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:31:31,839 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:31,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1940279612, now seen corresponding path program 1 times [2022-11-18 20:31:31,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:31,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536267806] [2022-11-18 20:31:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:31,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-18 20:31:33,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:33,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536267806] [2022-11-18 20:31:33,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536267806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:33,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:33,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:33,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575098958] [2022-11-18 20:31:33,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:33,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:33,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:33,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:33,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:33,045 INFO L87 Difference]: Start difference. First operand 87871 states and 95757 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:37,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:37,684 INFO L93 Difference]: Finished difference Result 195266 states and 213075 transitions. [2022-11-18 20:31:37,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:37,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 527 [2022-11-18 20:31:37,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:37,998 INFO L225 Difference]: With dead ends: 195266 [2022-11-18 20:31:37,998 INFO L226 Difference]: Without dead ends: 108148 [2022-11-18 20:31:38,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:38,029 INFO L413 NwaCegarLoop]: 1282 mSDtfsCounter, 581 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:38,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1290 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-18 20:31:38,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108148 states. [2022-11-18 20:31:39,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108148 to 105144. [2022-11-18 20:31:39,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105144 states, 105143 states have (on average 1.0826683659397203) internal successors, (113835), 105143 states have internal predecessors, (113835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:39,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105144 states to 105144 states and 113835 transitions. [2022-11-18 20:31:39,821 INFO L78 Accepts]: Start accepts. Automaton has 105144 states and 113835 transitions. Word has length 527 [2022-11-18 20:31:39,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:39,822 INFO L495 AbstractCegarLoop]: Abstraction has 105144 states and 113835 transitions. [2022-11-18 20:31:39,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:39,822 INFO L276 IsEmpty]: Start isEmpty. Operand 105144 states and 113835 transitions. [2022-11-18 20:31:39,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2022-11-18 20:31:39,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:39,841 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:31:39,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:31:39,842 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:39,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:39,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2553455, now seen corresponding path program 1 times [2022-11-18 20:31:39,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:39,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508378407] [2022-11-18 20:31:39,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:39,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2022-11-18 20:31:40,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:40,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508378407] [2022-11-18 20:31:40,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508378407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:40,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:40,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:40,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227198604] [2022-11-18 20:31:40,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:40,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:40,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:40,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:40,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:40,419 INFO L87 Difference]: Start difference. First operand 105144 states and 113835 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:45,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:45,134 INFO L93 Difference]: Finished difference Result 210286 states and 227772 transitions. [2022-11-18 20:31:45,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:45,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 573 [2022-11-18 20:31:45,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:45,261 INFO L225 Difference]: With dead ends: 210286 [2022-11-18 20:31:45,261 INFO L226 Difference]: Without dead ends: 105895 [2022-11-18 20:31:45,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:45,294 INFO L413 NwaCegarLoop]: 1108 mSDtfsCounter, 806 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:45,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1116 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-18 20:31:45,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105895 states. [2022-11-18 20:31:46,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105895 to 105895. [2022-11-18 20:31:46,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105895 states, 105894 states have (on average 1.070391145862844) internal successors, (113348), 105894 states have internal predecessors, (113348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:46,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105895 states to 105895 states and 113348 transitions. [2022-11-18 20:31:46,698 INFO L78 Accepts]: Start accepts. Automaton has 105895 states and 113348 transitions. Word has length 573 [2022-11-18 20:31:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:46,699 INFO L495 AbstractCegarLoop]: Abstraction has 105895 states and 113348 transitions. [2022-11-18 20:31:46,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:46,699 INFO L276 IsEmpty]: Start isEmpty. Operand 105895 states and 113348 transitions. [2022-11-18 20:31:46,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-11-18 20:31:46,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:46,715 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:31:46,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:31:46,716 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:46,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:46,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1602236886, now seen corresponding path program 1 times [2022-11-18 20:31:46,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:46,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045312017] [2022-11-18 20:31:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:46,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 667 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-18 20:31:48,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:48,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045312017] [2022-11-18 20:31:48,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045312017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:48,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:48,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:48,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433092056] [2022-11-18 20:31:48,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:48,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:48,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:48,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:48,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:48,164 INFO L87 Difference]: Start difference. First operand 105895 states and 113348 transitions. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:52,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:52,945 INFO L93 Difference]: Finished difference Result 214792 states and 229744 transitions. [2022-11-18 20:31:52,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:52,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 600 [2022-11-18 20:31:52,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:53,064 INFO L225 Difference]: With dead ends: 214792 [2022-11-18 20:31:53,064 INFO L226 Difference]: Without dead ends: 109650 [2022-11-18 20:31:53,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:53,091 INFO L413 NwaCegarLoop]: 1265 mSDtfsCounter, 591 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:53,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1273 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-18 20:31:53,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109650 states. [2022-11-18 20:31:54,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109650 to 106646. [2022-11-18 20:31:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106646 states, 106645 states have (on average 1.060518542829012) internal successors, (113099), 106645 states have internal predecessors, (113099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106646 states to 106646 states and 113099 transitions. [2022-11-18 20:31:54,826 INFO L78 Accepts]: Start accepts. Automaton has 106646 states and 113099 transitions. Word has length 600 [2022-11-18 20:31:54,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:54,827 INFO L495 AbstractCegarLoop]: Abstraction has 106646 states and 113099 transitions. [2022-11-18 20:31:54,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:54,827 INFO L276 IsEmpty]: Start isEmpty. Operand 106646 states and 113099 transitions. [2022-11-18 20:31:54,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2022-11-18 20:31:54,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:54,849 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:31:54,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:31:54,849 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:54,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:54,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1697512307, now seen corresponding path program 1 times [2022-11-18 20:31:54,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:54,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041995569] [2022-11-18 20:31:54,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:54,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 711 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-18 20:31:55,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:55,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041995569] [2022-11-18 20:31:55,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041995569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:55,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:55,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:31:55,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037605680] [2022-11-18 20:31:55,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:55,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:31:55,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:55,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:31:55,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:55,390 INFO L87 Difference]: Start difference. First operand 106646 states and 113099 transitions. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:59,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:59,802 INFO L93 Difference]: Finished difference Result 227559 states and 242182 transitions. [2022-11-18 20:31:59,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:31:59,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 622 [2022-11-18 20:31:59,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:59,922 INFO L225 Difference]: With dead ends: 227559 [2022-11-18 20:31:59,922 INFO L226 Difference]: Without dead ends: 121666 [2022-11-18 20:31:59,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:31:59,963 INFO L413 NwaCegarLoop]: 1286 mSDtfsCounter, 602 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:59,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 1294 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-18 20:32:00,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121666 states. [2022-11-18 20:32:01,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121666 to 115658. [2022-11-18 20:32:01,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115658 states, 115657 states have (on average 1.0552063428932101) internal successors, (122042), 115657 states have internal predecessors, (122042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115658 states to 115658 states and 122042 transitions. [2022-11-18 20:32:01,592 INFO L78 Accepts]: Start accepts. Automaton has 115658 states and 122042 transitions. Word has length 622 [2022-11-18 20:32:01,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:01,592 INFO L495 AbstractCegarLoop]: Abstraction has 115658 states and 122042 transitions. [2022-11-18 20:32:01,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:01,593 INFO L276 IsEmpty]: Start isEmpty. Operand 115658 states and 122042 transitions. [2022-11-18 20:32:01,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2022-11-18 20:32:01,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:01,604 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:32:01,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:32:01,604 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:32:01,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:01,605 INFO L85 PathProgramCache]: Analyzing trace with hash 328629557, now seen corresponding path program 1 times [2022-11-18 20:32:01,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:01,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205084961] [2022-11-18 20:32:01,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:01,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 741 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-18 20:32:02,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:02,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205084961] [2022-11-18 20:32:02,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205084961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:02,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:02,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:32:02,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045336718] [2022-11-18 20:32:02,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:02,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:32:02,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:02,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:32:02,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:32:02,781 INFO L87 Difference]: Start difference. First operand 115658 states and 122042 transitions. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:07,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:07,250 INFO L93 Difference]: Finished difference Result 234318 states and 247183 transitions. [2022-11-18 20:32:07,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:32:07,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 637 [2022-11-18 20:32:07,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:07,370 INFO L225 Difference]: With dead ends: 234318 [2022-11-18 20:32:07,370 INFO L226 Difference]: Without dead ends: 119413 [2022-11-18 20:32:07,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:32:07,413 INFO L413 NwaCegarLoop]: 1335 mSDtfsCounter, 595 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 2463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:07,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 1343 Invalid, 2463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-18 20:32:07,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119413 states. [2022-11-18 20:32:08,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119413 to 117160. [2022-11-18 20:32:08,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117160 states, 117159 states have (on average 1.0535596923838544) internal successors, (123434), 117159 states have internal predecessors, (123434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:09,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117160 states to 117160 states and 123434 transitions. [2022-11-18 20:32:09,268 INFO L78 Accepts]: Start accepts. Automaton has 117160 states and 123434 transitions. Word has length 637 [2022-11-18 20:32:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:09,269 INFO L495 AbstractCegarLoop]: Abstraction has 117160 states and 123434 transitions. [2022-11-18 20:32:09,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand 117160 states and 123434 transitions. [2022-11-18 20:32:09,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-11-18 20:32:09,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:09,284 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:32:09,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:32:09,284 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:32:09,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:09,285 INFO L85 PathProgramCache]: Analyzing trace with hash -984613049, now seen corresponding path program 1 times [2022-11-18 20:32:09,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:09,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555627020] [2022-11-18 20:32:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:09,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 953 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-18 20:32:09,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:09,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555627020] [2022-11-18 20:32:09,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555627020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:09,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:09,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:32:09,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730438357] [2022-11-18 20:32:09,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:09,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:32:09,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:09,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:32:09,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:32:09,912 INFO L87 Difference]: Start difference. First operand 117160 states and 123434 transitions. Second operand has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:16,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:16,427 INFO L93 Difference]: Finished difference Result 243330 states and 256346 transitions. [2022-11-18 20:32:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:32:16,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 656 [2022-11-18 20:32:16,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:16,594 INFO L225 Difference]: With dead ends: 243330 [2022-11-18 20:32:16,594 INFO L226 Difference]: Without dead ends: 126172 [2022-11-18 20:32:16,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:32:16,646 INFO L413 NwaCegarLoop]: 1286 mSDtfsCounter, 1328 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3954 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 4221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 3954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:16,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1328 Valid, 1300 Invalid, 4221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 3954 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-18 20:32:16,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126172 states. [2022-11-18 20:32:18,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126172 to 126172. [2022-11-18 20:32:18,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126172 states, 126171 states have (on average 1.0508753992597348) internal successors, (132590), 126171 states have internal predecessors, (132590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:18,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126172 states to 126172 states and 132590 transitions. [2022-11-18 20:32:18,246 INFO L78 Accepts]: Start accepts. Automaton has 126172 states and 132590 transitions. Word has length 656 [2022-11-18 20:32:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:18,247 INFO L495 AbstractCegarLoop]: Abstraction has 126172 states and 132590 transitions. [2022-11-18 20:32:18,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:18,247 INFO L276 IsEmpty]: Start isEmpty. Operand 126172 states and 132590 transitions. [2022-11-18 20:32:18,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2022-11-18 20:32:18,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:18,269 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:18,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:32:18,270 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:32:18,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:18,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1541879315, now seen corresponding path program 1 times [2022-11-18 20:32:18,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:18,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684275823] [2022-11-18 20:32:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:18,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 453 proven. 108 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-18 20:32:19,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:19,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684275823] [2022-11-18 20:32:19,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684275823] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:19,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351908018] [2022-11-18 20:32:19,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:19,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:19,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:19,851 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:19,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:32:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:20,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:32:20,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:20,808 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-18 20:32:20,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:32:20,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351908018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:20,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:32:20,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-18 20:32:20,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708557134] [2022-11-18 20:32:20,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:20,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:32:20,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:32:20,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:32:20,812 INFO L87 Difference]: Start difference. First operand 126172 states and 132590 transitions. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:25,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:25,246 INFO L93 Difference]: Finished difference Result 251591 states and 264422 transitions. [2022-11-18 20:32:25,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:32:25,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 744 [2022-11-18 20:32:25,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:25,624 INFO L225 Difference]: With dead ends: 251591 [2022-11-18 20:32:25,625 INFO L226 Difference]: Without dead ends: 126172 [2022-11-18 20:32:25,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:32:25,669 INFO L413 NwaCegarLoop]: 1310 mSDtfsCounter, 603 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 2409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:25,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 1318 Invalid, 2409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-18 20:32:25,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126172 states. [2022-11-18 20:32:26,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126172 to 120164. [2022-11-18 20:32:26,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120164 states, 120163 states have (on average 1.03839784293002) internal successors, (124777), 120163 states have internal predecessors, (124777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:27,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120164 states to 120164 states and 124777 transitions. [2022-11-18 20:32:27,081 INFO L78 Accepts]: Start accepts. Automaton has 120164 states and 124777 transitions. Word has length 744 [2022-11-18 20:32:27,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:27,082 INFO L495 AbstractCegarLoop]: Abstraction has 120164 states and 124777 transitions. [2022-11-18 20:32:27,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:27,082 INFO L276 IsEmpty]: Start isEmpty. Operand 120164 states and 124777 transitions. [2022-11-18 20:32:27,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2022-11-18 20:32:27,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:27,129 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:27,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:32:27,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0cbb639-6dc2-442f-8a92-ae50bb124fd8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:32:27,335 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:32:27,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:27,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1003159082, now seen corresponding path program 1 times [2022-11-18 20:32:27,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:27,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534888540] [2022-11-18 20:32:27,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:27,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat