./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label37.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label37.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN --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 8bd98135d8ae582748799a59c9940e3e8b9dde2a3b5c340030fcdb71a0e998f7 --- 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-6b4ec56 [2022-11-20 12:11:14,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:11:14,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:11:14,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:11:14,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:11:14,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:11:14,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:11:14,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:11:14,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:11:14,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:11:14,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:11:14,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:11:14,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:11:14,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:11:14,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:11:14,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:11:14,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:11:14,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:11:14,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:11:14,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:11:14,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:11:14,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:11:14,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:11:14,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:11:14,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:11:14,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:11:14,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:11:14,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:11:14,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:11:14,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:11:14,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:11:14,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:11:14,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:11:14,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:11:14,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:11:14,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:11:14,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:11:14,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:11:14,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:11:14,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:11:14,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:11:14,214 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:11:14,237 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:11:14,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:11:14,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:11:14,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:11:14,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:11:14,238 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:11:14,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:11:14,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:11:14,239 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:11:14,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:11:14,240 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:11:14,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:11:14,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:11:14,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:11:14,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:11:14,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:11:14,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:11:14,241 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:11:14,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:11:14,242 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:11:14,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:11:14,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:11:14,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:11:14,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:11:14,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:11:14,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:11:14,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:11:14,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:11:14,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:11:14,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:11:14,244 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:11:14,244 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:11:14,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:11:14,245 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_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bd98135d8ae582748799a59c9940e3e8b9dde2a3b5c340030fcdb71a0e998f7 [2022-11-20 12:11:14,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:11:14,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:11:14,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:11:14,616 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:11:14,617 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:11:14,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/eca-rers2012/Problem17_label37.c [2022-11-20 12:11:17,666 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:11:18,191 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:11:18,192 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/sv-benchmarks/c/eca-rers2012/Problem17_label37.c [2022-11-20 12:11:18,218 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/data/4ff5d4bed/516d81acc01544bf9fe5a22162223e16/FLAGc642f98e6 [2022-11-20 12:11:18,241 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/data/4ff5d4bed/516d81acc01544bf9fe5a22162223e16 [2022-11-20 12:11:18,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:11:18,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:11:18,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:11:18,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:11:18,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:11:18,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:11:18" (1/1) ... [2022-11-20 12:11:18,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e4d74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:18, skipping insertion in model container [2022-11-20 12:11:18,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:11:18" (1/1) ... [2022-11-20 12:11:18,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:11:18,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:11:18,634 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/sv-benchmarks/c/eca-rers2012/Problem17_label37.c[2848,2861] [2022-11-20 12:11:19,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:11:19,586 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:11:19,617 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/sv-benchmarks/c/eca-rers2012/Problem17_label37.c[2848,2861] [2022-11-20 12:11:20,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:11:20,079 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:11:20,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:20 WrapperNode [2022-11-20 12:11:20,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:11:20,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:11:20,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:11:20,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:11:20,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:20" (1/1) ... [2022-11-20 12:11:20,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:20" (1/1) ... [2022-11-20 12:11:20,419 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-11-20 12:11:20,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:11:20,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:11:20,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:11:20,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:11:20,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:20" (1/1) ... [2022-11-20 12:11:20,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:20" (1/1) ... [2022-11-20 12:11:20,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:20" (1/1) ... [2022-11-20 12:11:20,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:20" (1/1) ... [2022-11-20 12:11:20,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:20" (1/1) ... [2022-11-20 12:11:20,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:20" (1/1) ... [2022-11-20 12:11:20,760 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:20" (1/1) ... [2022-11-20 12:11:20,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:20" (1/1) ... [2022-11-20 12:11:20,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:11:20,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:11:20,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:11:20,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:11:20,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:20" (1/1) ... [2022-11-20 12:11:20,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:11:20,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:11:20,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:11:20,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:11:20,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:11:20,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:11:20,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:11:20,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:11:21,091 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:11:21,093 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:11:25,449 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:11:25,464 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:11:25,464 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:11:25,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:11:25 BoogieIcfgContainer [2022-11-20 12:11:25,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:11:25,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:11:25,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:11:25,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:11:25,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:11:18" (1/3) ... [2022-11-20 12:11:25,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc7742f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:11:25, skipping insertion in model container [2022-11-20 12:11:25,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:20" (2/3) ... [2022-11-20 12:11:25,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc7742f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:11:25, skipping insertion in model container [2022-11-20 12:11:25,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:11:25" (3/3) ... [2022-11-20 12:11:25,479 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label37.c [2022-11-20 12:11:25,503 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:11:25,504 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:11:25,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:11:25,592 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;@12936c06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:11:25,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:11:25,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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) [2022-11-20 12:11:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 12:11:25,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:25,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:25,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:25,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash 567305786, now seen corresponding path program 1 times [2022-11-20 12:11:25,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:25,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946616838] [2022-11-20 12:11:25,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:25,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:25,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:25,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:25,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946616838] [2022-11-20 12:11:25,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946616838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:25,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:25,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:11:25,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444987176] [2022-11-20 12:11:25,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:25,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:25,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:25,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:25,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:25,977 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2022-11-20 12:11:30,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:30,494 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2022-11-20 12:11:30,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:30,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2022-11-20 12:11:30,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:30,515 INFO L225 Difference]: With dead ends: 1667 [2022-11-20 12:11:30,515 INFO L226 Difference]: Without dead ends: 998 [2022-11-20 12:11:30,521 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 [2022-11-20 12:11:30,524 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 527 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:30,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-20 12:11:30,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-11-20 12:11:30,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2022-11-20 12:11:30,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 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) [2022-11-20 12:11:30,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2022-11-20 12:11:30,618 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 18 [2022-11-20 12:11:30,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:30,618 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2022-11-20 12:11:30,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2022-11-20 12:11:30,619 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2022-11-20 12:11:30,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 12:11:30,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:30,621 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:11:30,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:11:30,622 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:30,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:30,623 INFO L85 PathProgramCache]: Analyzing trace with hash 581142199, now seen corresponding path program 1 times [2022-11-20 12:11:30,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:30,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740610256] [2022-11-20 12:11:30,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:30,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:30,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:30,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740610256] [2022-11-20 12:11:30,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740610256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:30,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:30,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:11:30,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720772893] [2022-11-20 12:11:30,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:30,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:30,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:30,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:30,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:30,924 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2022-11-20 12:11:34,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:34,158 INFO L93 Difference]: Finished difference Result 2841 states and 4881 transitions. [2022-11-20 12:11:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:34,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 83 [2022-11-20 12:11:34,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:34,166 INFO L225 Difference]: With dead ends: 2841 [2022-11-20 12:11:34,166 INFO L226 Difference]: Without dead ends: 1861 [2022-11-20 12:11:34,169 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 [2022-11-20 12:11:34,170 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:34,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 496 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 12:11:34,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2022-11-20 12:11:34,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1857. [2022-11-20 12:11:34,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4547413793103448) internal successors, (2700), 1856 states have internal predecessors, (2700), 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) [2022-11-20 12:11:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2700 transitions. [2022-11-20 12:11:34,225 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2700 transitions. Word has length 83 [2022-11-20 12:11:34,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:34,226 INFO L495 AbstractCegarLoop]: Abstraction has 1857 states and 2700 transitions. [2022-11-20 12:11:34,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2022-11-20 12:11:34,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2700 transitions. [2022-11-20 12:11:34,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 12:11:34,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:34,230 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:11:34,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:11:34,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:34,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:34,232 INFO L85 PathProgramCache]: Analyzing trace with hash -252550036, now seen corresponding path program 1 times [2022-11-20 12:11:34,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:34,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594331061] [2022-11-20 12:11:34,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:34,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:34,666 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:34,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:34,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594331061] [2022-11-20 12:11:34,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594331061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:34,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:34,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:11:34,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139076633] [2022-11-20 12:11:34,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:34,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:34,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:34,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:34,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:34,669 INFO L87 Difference]: Start difference. First operand 1857 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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) [2022-11-20 12:11:38,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:38,298 INFO L93 Difference]: Finished difference Result 4591 states and 6640 transitions. [2022-11-20 12:11:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:38,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 123 [2022-11-20 12:11:38,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:38,309 INFO L225 Difference]: With dead ends: 4591 [2022-11-20 12:11:38,309 INFO L226 Difference]: Without dead ends: 2736 [2022-11-20 12:11:38,312 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 [2022-11-20 12:11:38,313 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:38,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 12:11:38,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2022-11-20 12:11:38,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2716. [2022-11-20 12:11:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.390791896869245) internal successors, (3776), 2715 states have internal predecessors, (3776), 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) [2022-11-20 12:11:38,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3776 transitions. [2022-11-20 12:11:38,372 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3776 transitions. Word has length 123 [2022-11-20 12:11:38,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:38,373 INFO L495 AbstractCegarLoop]: Abstraction has 2716 states and 3776 transitions. [2022-11-20 12:11:38,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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) [2022-11-20 12:11:38,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3776 transitions. [2022-11-20 12:11:38,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 12:11:38,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:38,375 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:11:38,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:11:38,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:38,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:38,377 INFO L85 PathProgramCache]: Analyzing trace with hash -800106755, now seen corresponding path program 1 times [2022-11-20 12:11:38,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:38,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446725558] [2022-11-20 12:11:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:38,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:38,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:38,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446725558] [2022-11-20 12:11:38,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446725558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:38,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:38,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:11:38,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057785116] [2022-11-20 12:11:38,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:38,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:38,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:38,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:38,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:38,615 INFO L87 Difference]: Start difference. First operand 2716 states and 3776 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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) [2022-11-20 12:11:41,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:41,256 INFO L93 Difference]: Finished difference Result 6709 states and 9429 transitions. [2022-11-20 12:11:41,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:41,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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 129 [2022-11-20 12:11:41,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:41,272 INFO L225 Difference]: With dead ends: 6709 [2022-11-20 12:11:41,272 INFO L226 Difference]: Without dead ends: 3995 [2022-11-20 12:11:41,276 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 [2022-11-20 12:11:41,277 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:41,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 12:11:41,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2022-11-20 12:11:41,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3142. [2022-11-20 12:11:41,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.274434893346068) internal successors, (4003), 3141 states have internal predecessors, (4003), 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) [2022-11-20 12:11:41,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4003 transitions. [2022-11-20 12:11:41,355 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4003 transitions. Word has length 129 [2022-11-20 12:11:41,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:41,356 INFO L495 AbstractCegarLoop]: Abstraction has 3142 states and 4003 transitions. [2022-11-20 12:11:41,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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) [2022-11-20 12:11:41,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4003 transitions. [2022-11-20 12:11:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-20 12:11:41,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:41,363 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:41,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:11:41,364 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:41,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:41,365 INFO L85 PathProgramCache]: Analyzing trace with hash -345110489, now seen corresponding path program 1 times [2022-11-20 12:11:41,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:41,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850896425] [2022-11-20 12:11:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:41,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:41,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:41,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850896425] [2022-11-20 12:11:41,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850896425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:41,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:41,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:11:41,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463252986] [2022-11-20 12:11:41,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:41,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:11:41,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:41,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:11:41,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:41,952 INFO L87 Difference]: Start difference. First operand 3142 states and 4003 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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) [2022-11-20 12:11:45,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:45,691 INFO L93 Difference]: Finished difference Result 8019 states and 10522 transitions. [2022-11-20 12:11:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:11:45,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 166 [2022-11-20 12:11:45,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:45,719 INFO L225 Difference]: With dead ends: 8019 [2022-11-20 12:11:45,719 INFO L226 Difference]: Without dead ends: 4879 [2022-11-20 12:11:45,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:11:45,731 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 1096 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:45,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 881 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-20 12:11:45,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2022-11-20 12:11:45,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 4852. [2022-11-20 12:11:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4851 states have (on average 1.2665429808286952) internal successors, (6144), 4851 states have internal predecessors, (6144), 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) [2022-11-20 12:11:45,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6144 transitions. [2022-11-20 12:11:45,871 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6144 transitions. Word has length 166 [2022-11-20 12:11:45,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:45,873 INFO L495 AbstractCegarLoop]: Abstraction has 4852 states and 6144 transitions. [2022-11-20 12:11:45,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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) [2022-11-20 12:11:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6144 transitions. [2022-11-20 12:11:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-20 12:11:45,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:45,882 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:45,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:11:45,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:45,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:45,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1150942888, now seen corresponding path program 1 times [2022-11-20 12:11:45,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:45,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298070744] [2022-11-20 12:11:45,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:45,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 12:11:46,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:46,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298070744] [2022-11-20 12:11:46,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298070744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:46,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:46,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:46,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341366213] [2022-11-20 12:11:46,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:46,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:46,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:46,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:46,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:46,099 INFO L87 Difference]: Start difference. First operand 4852 states and 6144 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-11-20 12:11:49,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:49,176 INFO L93 Difference]: Finished difference Result 12249 states and 15825 transitions. [2022-11-20 12:11:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:49,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 172 [2022-11-20 12:11:49,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:49,202 INFO L225 Difference]: With dead ends: 12249 [2022-11-20 12:11:49,202 INFO L226 Difference]: Without dead ends: 7399 [2022-11-20 12:11:49,208 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 [2022-11-20 12:11:49,209 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 430 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:49,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 545 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 12:11:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2022-11-20 12:11:49,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 4826. [2022-11-20 12:11:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4825 states have (on average 1.2652849740932643) internal successors, (6105), 4825 states have internal predecessors, (6105), 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) [2022-11-20 12:11:49,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 6105 transitions. [2022-11-20 12:11:49,390 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 6105 transitions. Word has length 172 [2022-11-20 12:11:49,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:49,391 INFO L495 AbstractCegarLoop]: Abstraction has 4826 states and 6105 transitions. [2022-11-20 12:11:49,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-11-20 12:11:49,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 6105 transitions. [2022-11-20 12:11:49,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-20 12:11:49,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:49,394 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:49,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:11:49,394 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:49,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:49,394 INFO L85 PathProgramCache]: Analyzing trace with hash 592869292, now seen corresponding path program 1 times [2022-11-20 12:11:49,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:49,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128466612] [2022-11-20 12:11:49,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:49,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 12:11:49,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:49,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128466612] [2022-11-20 12:11:49,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128466612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:49,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:49,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:49,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241139501] [2022-11-20 12:11:49,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:49,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:49,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:49,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:49,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:49,551 INFO L87 Difference]: Start difference. First operand 4826 states and 6105 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2022-11-20 12:11:52,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:52,934 INFO L93 Difference]: Finished difference Result 13481 states and 17131 transitions. [2022-11-20 12:11:52,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:52,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 185 [2022-11-20 12:11:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:52,967 INFO L225 Difference]: With dead ends: 13481 [2022-11-20 12:11:52,967 INFO L226 Difference]: Without dead ends: 8657 [2022-11-20 12:11:52,975 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 [2022-11-20 12:11:52,976 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 466 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:52,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 483 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 12:11:52,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8657 states. [2022-11-20 12:11:53,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8657 to 7378. [2022-11-20 12:11:53,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7378 states, 7377 states have (on average 1.2479327639962043) internal successors, (9206), 7377 states have internal predecessors, (9206), 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) [2022-11-20 12:11:53,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7378 states to 7378 states and 9206 transitions. [2022-11-20 12:11:53,161 INFO L78 Accepts]: Start accepts. Automaton has 7378 states and 9206 transitions. Word has length 185 [2022-11-20 12:11:53,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:53,162 INFO L495 AbstractCegarLoop]: Abstraction has 7378 states and 9206 transitions. [2022-11-20 12:11:53,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2022-11-20 12:11:53,163 INFO L276 IsEmpty]: Start isEmpty. Operand 7378 states and 9206 transitions. [2022-11-20 12:11:53,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-20 12:11:53,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:53,167 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-20 12:11:53,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:11:53,167 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:53,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:53,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1562276696, now seen corresponding path program 1 times [2022-11-20 12:11:53,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:53,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821219540] [2022-11-20 12:11:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:53,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 12:11:53,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:53,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821219540] [2022-11-20 12:11:53,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821219540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:53,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:53,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:11:53,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147193664] [2022-11-20 12:11:53,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:53,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:11:53,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:53,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:11:53,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:11:53,558 INFO L87 Difference]: Start difference. First operand 7378 states and 9206 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2022-11-20 12:11:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:56,917 INFO L93 Difference]: Finished difference Result 18607 states and 23435 transitions. [2022-11-20 12:11:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:11:56,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 [2022-11-20 12:11:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:56,938 INFO L225 Difference]: With dead ends: 18607 [2022-11-20 12:11:56,938 INFO L226 Difference]: Without dead ends: 10379 [2022-11-20 12:11:56,947 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 [2022-11-20 12:11:56,948 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 482 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:56,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 1020 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 12:11:56,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10379 states. [2022-11-20 12:11:57,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10379 to 10371. [2022-11-20 12:11:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10371 states, 10370 states have (on average 1.2060752169720348) internal successors, (12507), 10370 states have internal predecessors, (12507), 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) [2022-11-20 12:11:57,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10371 states to 10371 states and 12507 transitions. [2022-11-20 12:11:57,174 INFO L78 Accepts]: Start accepts. Automaton has 10371 states and 12507 transitions. Word has length 234 [2022-11-20 12:11:57,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:57,175 INFO L495 AbstractCegarLoop]: Abstraction has 10371 states and 12507 transitions. [2022-11-20 12:11:57,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2022-11-20 12:11:57,176 INFO L276 IsEmpty]: Start isEmpty. Operand 10371 states and 12507 transitions. [2022-11-20 12:11:57,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-20 12:11:57,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:57,180 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:57,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:11:57,182 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:57,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:57,183 INFO L85 PathProgramCache]: Analyzing trace with hash -408685212, now seen corresponding path program 1 times [2022-11-20 12:11:57,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:57,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633091959] [2022-11-20 12:11:57,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:57,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 170 proven. 70 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:11:57,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:57,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633091959] [2022-11-20 12:11:57,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633091959] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:11:57,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277215415] [2022-11-20 12:11:57,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:57,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:11:57,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:11:57,652 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:11:57,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:11:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:57,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:11:57,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 170 proven. 70 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:11:58,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:11:58,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277215415] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:11:58,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:11:58,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-11-20 12:11:58,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79683871] [2022-11-20 12:11:58,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:58,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:11:58,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:58,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:11:58,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:11:58,848 INFO L87 Difference]: Start difference. First operand 10371 states and 12507 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 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) [2022-11-20 12:12:04,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:04,293 INFO L93 Difference]: Finished difference Result 32691 states and 39751 transitions. [2022-11-20 12:12:04,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:12:04,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 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 242 [2022-11-20 12:12:04,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:04,330 INFO L225 Difference]: With dead ends: 32691 [2022-11-20 12:12:04,330 INFO L226 Difference]: Without dead ends: 21461 [2022-11-20 12:12:04,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 479 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:12:04,343 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 904 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 853 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:04,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 158 Invalid, 3172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [853 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 12:12:04,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21461 states. [2022-11-20 12:12:04,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21461 to 21459. [2022-11-20 12:12:04,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21459 states, 21458 states have (on average 1.1587752819461272) internal successors, (24865), 21458 states have internal predecessors, (24865), 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) [2022-11-20 12:12:04,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21459 states to 21459 states and 24865 transitions. [2022-11-20 12:12:04,767 INFO L78 Accepts]: Start accepts. Automaton has 21459 states and 24865 transitions. Word has length 242 [2022-11-20 12:12:04,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:04,768 INFO L495 AbstractCegarLoop]: Abstraction has 21459 states and 24865 transitions. [2022-11-20 12:12:04,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 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) [2022-11-20 12:12:04,768 INFO L276 IsEmpty]: Start isEmpty. Operand 21459 states and 24865 transitions. [2022-11-20 12:12:04,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-20 12:12:04,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:04,778 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:04,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:04,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:04,984 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:04,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:04,984 INFO L85 PathProgramCache]: Analyzing trace with hash 302196312, now seen corresponding path program 1 times [2022-11-20 12:12:04,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:04,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626045791] [2022-11-20 12:12:04,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:04,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 12:12:05,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:05,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626045791] [2022-11-20 12:12:05,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626045791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:05,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:05,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:12:05,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57532367] [2022-11-20 12:12:05,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:05,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:12:05,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:05,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:12:05,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:12:05,244 INFO L87 Difference]: Start difference. First operand 21459 states and 24865 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2022-11-20 12:12:08,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:08,004 INFO L93 Difference]: Finished difference Result 47592 states and 55279 transitions. [2022-11-20 12:12:08,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:12:08,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 255 [2022-11-20 12:12:08,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:08,058 INFO L225 Difference]: With dead ends: 47592 [2022-11-20 12:12:08,059 INFO L226 Difference]: Without dead ends: 25708 [2022-11-20 12:12:08,080 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 [2022-11-20 12:12:08,081 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 371 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:08,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 860 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 12:12:08,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25708 states. [2022-11-20 12:12:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25708 to 25708. [2022-11-20 12:12:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25708 states, 25707 states have (on average 1.1349048897187537) internal successors, (29175), 25707 states have internal predecessors, (29175), 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) [2022-11-20 12:12:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25708 states to 25708 states and 29175 transitions. [2022-11-20 12:12:08,550 INFO L78 Accepts]: Start accepts. Automaton has 25708 states and 29175 transitions. Word has length 255 [2022-11-20 12:12:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:08,551 INFO L495 AbstractCegarLoop]: Abstraction has 25708 states and 29175 transitions. [2022-11-20 12:12:08,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2022-11-20 12:12:08,552 INFO L276 IsEmpty]: Start isEmpty. Operand 25708 states and 29175 transitions. [2022-11-20 12:12:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-20 12:12:08,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:08,561 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:08,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:12:08,561 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:08,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:08,562 INFO L85 PathProgramCache]: Analyzing trace with hash 81778786, now seen corresponding path program 1 times [2022-11-20 12:12:08,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:08,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008024416] [2022-11-20 12:12:08,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:08,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 311 proven. 73 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 12:12:09,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:09,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008024416] [2022-11-20 12:12:09,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008024416] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:12:09,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299499005] [2022-11-20 12:12:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:09,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:09,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:12:09,071 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:12:09,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:12:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:09,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:12:09,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 311 proven. 73 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 12:12:09,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 12:12:10,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299499005] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:12:10,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:12:10,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-11-20 12:12:10,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120158900] [2022-11-20 12:12:10,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:10,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:12:10,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:10,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:12:10,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:12:10,152 INFO L87 Difference]: Start difference. First operand 25708 states and 29175 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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) [2022-11-20 12:12:15,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:15,037 INFO L93 Difference]: Finished difference Result 62499 states and 71199 transitions. [2022-11-20 12:12:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:12:15,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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 316 [2022-11-20 12:12:15,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:15,089 INFO L225 Difference]: With dead ends: 62499 [2022-11-20 12:12:15,089 INFO L226 Difference]: Without dead ends: 36366 [2022-11-20 12:12:15,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 627 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:12:15,107 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 843 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2345 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 2839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 2345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:15,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 195 Invalid, 2839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 2345 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-20 12:12:15,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36366 states. [2022-11-20 12:12:15,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36366 to 34238. [2022-11-20 12:12:15,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34238 states, 34237 states have (on average 1.1454566696848438) internal successors, (39217), 34237 states have internal predecessors, (39217), 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) [2022-11-20 12:12:15,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34238 states to 34238 states and 39217 transitions. [2022-11-20 12:12:15,854 INFO L78 Accepts]: Start accepts. Automaton has 34238 states and 39217 transitions. Word has length 316 [2022-11-20 12:12:15,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:15,855 INFO L495 AbstractCegarLoop]: Abstraction has 34238 states and 39217 transitions. [2022-11-20 12:12:15,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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) [2022-11-20 12:12:15,856 INFO L276 IsEmpty]: Start isEmpty. Operand 34238 states and 39217 transitions. [2022-11-20 12:12:15,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2022-11-20 12:12:15,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:15,869 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2022-11-20 12:12:15,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:16,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:12:16,075 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:16,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:16,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2138614133, now seen corresponding path program 1 times [2022-11-20 12:12:16,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:16,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791942308] [2022-11-20 12:12:16,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:16,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2022-11-20 12:12:16,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:16,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791942308] [2022-11-20 12:12:16,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791942308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:16,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:16,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:12:16,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9699477] [2022-11-20 12:12:16,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:16,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:12:16,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:16,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:12:16,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:12:16,443 INFO L87 Difference]: Start difference. First operand 34238 states and 39217 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2022-11-20 12:12:19,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:19,721 INFO L93 Difference]: Finished difference Result 80388 states and 92354 transitions. [2022-11-20 12:12:19,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:12:19,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 439 [2022-11-20 12:12:19,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:19,796 INFO L225 Difference]: With dead ends: 80388 [2022-11-20 12:12:19,797 INFO L226 Difference]: Without dead ends: 45725 [2022-11-20 12:12:19,822 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 [2022-11-20 12:12:19,824 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 486 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:19,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 255 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 12:12:19,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45725 states. [2022-11-20 12:12:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45725 to 33771. [2022-11-20 12:12:20,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33771 states, 33770 states have (on average 1.1432928634883033) internal successors, (38609), 33770 states have internal predecessors, (38609), 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) [2022-11-20 12:12:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33771 states to 33771 states and 38609 transitions. [2022-11-20 12:12:20,415 INFO L78 Accepts]: Start accepts. Automaton has 33771 states and 38609 transitions. Word has length 439 [2022-11-20 12:12:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:20,416 INFO L495 AbstractCegarLoop]: Abstraction has 33771 states and 38609 transitions. [2022-11-20 12:12:20,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2022-11-20 12:12:20,416 INFO L276 IsEmpty]: Start isEmpty. Operand 33771 states and 38609 transitions. [2022-11-20 12:12:20,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-11-20 12:12:20,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:20,428 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:20,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:12:20,429 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:20,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:20,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1984090076, now seen corresponding path program 1 times [2022-11-20 12:12:20,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:20,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85621748] [2022-11-20 12:12:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:20,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:12:21,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:21,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85621748] [2022-11-20 12:12:21,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85621748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:21,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:21,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:12:21,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106048991] [2022-11-20 12:12:21,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:21,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:12:21,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:21,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:12:21,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:12:21,183 INFO L87 Difference]: Start difference. First operand 33771 states and 38609 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2022-11-20 12:12:24,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:24,526 INFO L93 Difference]: Finished difference Result 80766 states and 92383 transitions. [2022-11-20 12:12:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:12:24,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 451 [2022-11-20 12:12:24,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:24,570 INFO L225 Difference]: With dead ends: 80766 [2022-11-20 12:12:24,570 INFO L226 Difference]: Without dead ends: 43595 [2022-11-20 12:12:24,584 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 [2022-11-20 12:12:24,585 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 372 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:24,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 846 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 12:12:24,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43595 states. [2022-11-20 12:12:25,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43595 to 38898. [2022-11-20 12:12:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38898 states, 38897 states have (on average 1.1182610484099031) internal successors, (43497), 38897 states have internal predecessors, (43497), 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) [2022-11-20 12:12:25,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38898 states to 38898 states and 43497 transitions. [2022-11-20 12:12:25,151 INFO L78 Accepts]: Start accepts. Automaton has 38898 states and 43497 transitions. Word has length 451 [2022-11-20 12:12:25,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:25,152 INFO L495 AbstractCegarLoop]: Abstraction has 38898 states and 43497 transitions. [2022-11-20 12:12:25,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2022-11-20 12:12:25,152 INFO L276 IsEmpty]: Start isEmpty. Operand 38898 states and 43497 transitions. [2022-11-20 12:12:25,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2022-11-20 12:12:25,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:25,164 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:25,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:12:25,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:25,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:25,166 INFO L85 PathProgramCache]: Analyzing trace with hash -115130207, now seen corresponding path program 1 times [2022-11-20 12:12:25,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:25,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955473271] [2022-11-20 12:12:25,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:25,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 300 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:12:26,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:26,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955473271] [2022-11-20 12:12:26,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955473271] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:12:26,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12726407] [2022-11-20 12:12:26,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:26,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:26,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:12:26,622 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:12:26,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:12:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:26,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:12:26,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 218 proven. 82 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:12:27,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 218 proven. 82 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:12:28,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12726407] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:12:28,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:12:28,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2022-11-20 12:12:28,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174963061] [2022-11-20 12:12:28,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:12:28,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:12:28,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:28,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:12:28,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:12:28,922 INFO L87 Difference]: Start difference. First operand 38898 states and 43497 transitions. Second operand has 9 states, 9 states have (on average 119.88888888888889) internal successors, (1079), 9 states have internal predecessors, (1079), 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) [2022-11-20 12:12:48,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:48,055 INFO L93 Difference]: Finished difference Result 126790 states and 142783 transitions. [2022-11-20 12:12:48,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:12:48,056 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 119.88888888888889) internal successors, (1079), 9 states have internal predecessors, (1079), 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 453 [2022-11-20 12:12:48,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:48,168 INFO L225 Difference]: With dead ends: 126790 [2022-11-20 12:12:48,169 INFO L226 Difference]: Without dead ends: 85767 [2022-11-20 12:12:48,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 931 GetRequests, 913 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:12:48,192 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 7625 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 11487 mSolverCounterSat, 2826 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7625 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 14313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2826 IncrementalHoareTripleChecker+Valid, 11487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:48,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7625 Valid, 428 Invalid, 14313 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2826 Valid, 11487 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2022-11-20 12:12:48,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85767 states. [2022-11-20 12:12:49,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85767 to 76353. [2022-11-20 12:12:49,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76353 states, 76352 states have (on average 1.120088537300922) internal successors, (85521), 76352 states have internal predecessors, (85521), 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) [2022-11-20 12:12:49,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76353 states to 76353 states and 85521 transitions. [2022-11-20 12:12:49,366 INFO L78 Accepts]: Start accepts. Automaton has 76353 states and 85521 transitions. Word has length 453 [2022-11-20 12:12:49,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:49,366 INFO L495 AbstractCegarLoop]: Abstraction has 76353 states and 85521 transitions. [2022-11-20 12:12:49,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.88888888888889) internal successors, (1079), 9 states have internal predecessors, (1079), 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) [2022-11-20 12:12:49,367 INFO L276 IsEmpty]: Start isEmpty. Operand 76353 states and 85521 transitions. [2022-11-20 12:12:49,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-11-20 12:12:49,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:49,378 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:49,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:49,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 12:12:49,586 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:49,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:49,587 INFO L85 PathProgramCache]: Analyzing trace with hash -25758450, now seen corresponding path program 1 times [2022-11-20 12:12:49,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:49,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744579609] [2022-11-20 12:12:49,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:49,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:50,395 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-20 12:12:50,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:50,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744579609] [2022-11-20 12:12:50,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744579609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:12:50,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:12:50,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:12:50,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856615697] [2022-11-20 12:12:50,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:12:50,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:12:50,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:12:50,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:12:50,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:12:50,399 INFO L87 Difference]: Start difference. First operand 76353 states and 85521 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2022-11-20 12:12:53,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:12:53,908 INFO L93 Difference]: Finished difference Result 168447 states and 188435 transitions. [2022-11-20 12:12:53,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:12:53,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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 462 [2022-11-20 12:12:53,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:12:54,007 INFO L225 Difference]: With dead ends: 168447 [2022-11-20 12:12:54,007 INFO L226 Difference]: Without dead ends: 88269 [2022-11-20 12:12:54,040 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 [2022-11-20 12:12:54,041 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 447 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:12:54,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 792 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 12:12:54,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88269 states. [2022-11-20 12:12:55,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88269 to 76327. [2022-11-20 12:12:55,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76327 states, 76326 states have (on average 1.1068574273510992) internal successors, (84482), 76326 states have internal predecessors, (84482), 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) [2022-11-20 12:12:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76327 states to 76327 states and 84482 transitions. [2022-11-20 12:12:55,937 INFO L78 Accepts]: Start accepts. Automaton has 76327 states and 84482 transitions. Word has length 462 [2022-11-20 12:12:55,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:12:55,938 INFO L495 AbstractCegarLoop]: Abstraction has 76327 states and 84482 transitions. [2022-11-20 12:12:55,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2022-11-20 12:12:55,939 INFO L276 IsEmpty]: Start isEmpty. Operand 76327 states and 84482 transitions. [2022-11-20 12:12:55,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2022-11-20 12:12:55,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:12:55,966 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:12:55,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:12:55,967 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:12:55,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:55,968 INFO L85 PathProgramCache]: Analyzing trace with hash 964590683, now seen corresponding path program 1 times [2022-11-20 12:12:55,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:55,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208510862] [2022-11-20 12:12:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:55,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:57,509 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 261 proven. 82 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:12:57,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:57,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208510862] [2022-11-20 12:12:57,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208510862] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:12:57,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612418041] [2022-11-20 12:12:57,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:57,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:57,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:12:57,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:12:57,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:12:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:57,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:12:57,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:06,542 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 358 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:13:06,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:10,830 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 12:13:10,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612418041] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:13:10,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:13:10,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 5] total 9 [2022-11-20 12:13:10,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075150642] [2022-11-20 12:13:10,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:10,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:13:10,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:13:10,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:13:10,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:13:10,834 INFO L87 Difference]: Start difference. First operand 76327 states and 84482 transitions. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 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) [2022-11-20 12:13:15,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:15,393 INFO L93 Difference]: Finished difference Result 158956 states and 175626 transitions. [2022-11-20 12:13:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:13:15,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 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 496 [2022-11-20 12:13:15,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:15,489 INFO L225 Difference]: With dead ends: 158956 [2022-11-20 12:13:15,489 INFO L226 Difference]: Without dead ends: 83056 [2022-11-20 12:13:15,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 986 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:13:15,516 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 477 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 2097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:15,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 308 Invalid, 2097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 1744 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 12:13:15,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83056 states. [2022-11-20 12:13:17,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83056 to 81426. [2022-11-20 12:13:17,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81426 states, 81425 states have (on average 1.0953392692661958) internal successors, (89188), 81425 states have internal predecessors, (89188), 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) [2022-11-20 12:13:17,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81426 states to 81426 states and 89188 transitions. [2022-11-20 12:13:17,177 INFO L78 Accepts]: Start accepts. Automaton has 81426 states and 89188 transitions. Word has length 496 [2022-11-20 12:13:17,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:17,178 INFO L495 AbstractCegarLoop]: Abstraction has 81426 states and 89188 transitions. [2022-11-20 12:13:17,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 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) [2022-11-20 12:13:17,178 INFO L276 IsEmpty]: Start isEmpty. Operand 81426 states and 89188 transitions. [2022-11-20 12:13:17,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2022-11-20 12:13:17,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:17,199 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:13:17,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:17,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:13:17,401 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:17,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:17,401 INFO L85 PathProgramCache]: Analyzing trace with hash 159594589, now seen corresponding path program 1 times [2022-11-20 12:13:17,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:13:17,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633828366] [2022-11-20 12:13:17,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:17,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:13:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-20 12:13:18,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:13:18,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633828366] [2022-11-20 12:13:18,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633828366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:18,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:18,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:13:18,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7771210] [2022-11-20 12:13:18,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:18,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:13:18,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:13:18,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:13:18,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:18,951 INFO L87 Difference]: Start difference. First operand 81426 states and 89188 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2022-11-20 12:13:21,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:21,497 INFO L93 Difference]: Finished difference Result 162420 states and 177942 transitions. [2022-11-20 12:13:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:13:21,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 585 [2022-11-20 12:13:21,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:21,576 INFO L225 Difference]: With dead ends: 162420 [2022-11-20 12:13:21,576 INFO L226 Difference]: Without dead ends: 81421 [2022-11-20 12:13:21,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:21,758 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 609 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:21,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 562 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 12:13:21,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81421 states. [2022-11-20 12:13:22,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81421 to 81420. [2022-11-20 12:13:22,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81420 states, 81419 states have (on average 1.0948181628366842) internal successors, (89139), 81419 states have internal predecessors, (89139), 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) [2022-11-20 12:13:23,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81420 states to 81420 states and 89139 transitions. [2022-11-20 12:13:23,038 INFO L78 Accepts]: Start accepts. Automaton has 81420 states and 89139 transitions. Word has length 585 [2022-11-20 12:13:23,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:23,040 INFO L495 AbstractCegarLoop]: Abstraction has 81420 states and 89139 transitions. [2022-11-20 12:13:23,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2022-11-20 12:13:23,040 INFO L276 IsEmpty]: Start isEmpty. Operand 81420 states and 89139 transitions. [2022-11-20 12:13:23,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2022-11-20 12:13:23,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:23,061 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:13:23,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:13:23,061 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:23,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:23,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1715675557, now seen corresponding path program 1 times [2022-11-20 12:13:23,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:13:23,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409631225] [2022-11-20 12:13:23,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:23,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:13:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-11-20 12:13:23,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:13:23,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409631225] [2022-11-20 12:13:23,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409631225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:23,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:23,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:13:23,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430680849] [2022-11-20 12:13:23,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:23,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:13:23,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:13:23,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:13:23,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:23,506 INFO L87 Difference]: Start difference. First operand 81420 states and 89139 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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) [2022-11-20 12:13:27,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:27,014 INFO L93 Difference]: Finished difference Result 168792 states and 184597 transitions. [2022-11-20 12:13:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:13:27,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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 604 [2022-11-20 12:13:27,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:27,093 INFO L225 Difference]: With dead ends: 168792 [2022-11-20 12:13:27,093 INFO L226 Difference]: Without dead ends: 85673 [2022-11-20 12:13:27,111 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 [2022-11-20 12:13:27,111 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 495 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:27,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 694 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 12:13:27,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85673 states. [2022-11-20 12:13:28,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85673 to 83541. [2022-11-20 12:13:28,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83541 states, 83540 states have (on average 1.0804524778549198) internal successors, (90261), 83540 states have internal predecessors, (90261), 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) [2022-11-20 12:13:28,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83541 states to 83541 states and 90261 transitions. [2022-11-20 12:13:28,404 INFO L78 Accepts]: Start accepts. Automaton has 83541 states and 90261 transitions. Word has length 604 [2022-11-20 12:13:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:28,404 INFO L495 AbstractCegarLoop]: Abstraction has 83541 states and 90261 transitions. [2022-11-20 12:13:28,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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) [2022-11-20 12:13:28,405 INFO L276 IsEmpty]: Start isEmpty. Operand 83541 states and 90261 transitions. [2022-11-20 12:13:28,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2022-11-20 12:13:28,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:28,422 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:13:28,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:13:28,423 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:28,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:28,423 INFO L85 PathProgramCache]: Analyzing trace with hash -839833757, now seen corresponding path program 1 times [2022-11-20 12:13:28,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:13:28,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201722110] [2022-11-20 12:13:28,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:28,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:13:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 360 proven. 82 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:13:30,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:13:30,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201722110] [2022-11-20 12:13:30,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201722110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:13:30,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933694561] [2022-11-20 12:13:30,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:30,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:13:30,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:13:30,453 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:13:30,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:13:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:30,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:13:30,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:13:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 360 proven. 82 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:13:32,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:13:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 360 proven. 82 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:13:36,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933694561] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:13:36,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:13:36,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-11-20 12:13:36,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748955830] [2022-11-20 12:13:36,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:13:36,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:13:36,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:13:36,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:13:36,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:13:36,995 INFO L87 Difference]: Start difference. First operand 83541 states and 90261 transitions. Second operand has 8 states, 8 states have (on average 180.125) internal successors, (1441), 7 states have internal predecessors, (1441), 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) [2022-11-20 12:13:47,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:47,197 INFO L93 Difference]: Finished difference Result 184531 states and 199197 transitions. [2022-11-20 12:13:47,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:13:47,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 180.125) internal successors, (1441), 7 states have internal predecessors, (1441), 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 662 [2022-11-20 12:13:47,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:47,304 INFO L225 Difference]: With dead ends: 184531 [2022-11-20 12:13:47,304 INFO L226 Difference]: Without dead ends: 101417 [2022-11-20 12:13:47,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1326 GetRequests, 1319 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:13:47,332 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 2098 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 5149 mSolverCounterSat, 1155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 6304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1155 IncrementalHoareTripleChecker+Valid, 5149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:47,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2098 Valid, 288 Invalid, 6304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1155 Valid, 5149 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-20 12:13:47,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101417 states. [2022-11-20 12:13:48,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101417 to 89487. [2022-11-20 12:13:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89487 states, 89486 states have (on average 1.0776210803924635) internal successors, (96432), 89486 states have internal predecessors, (96432), 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) [2022-11-20 12:13:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89487 states to 89487 states and 96432 transitions. [2022-11-20 12:13:48,983 INFO L78 Accepts]: Start accepts. Automaton has 89487 states and 96432 transitions. Word has length 662 [2022-11-20 12:13:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:48,984 INFO L495 AbstractCegarLoop]: Abstraction has 89487 states and 96432 transitions. [2022-11-20 12:13:48,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 180.125) internal successors, (1441), 7 states have internal predecessors, (1441), 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) [2022-11-20 12:13:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand 89487 states and 96432 transitions. [2022-11-20 12:13:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2022-11-20 12:13:49,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:49,004 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:13:49,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:13:49,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:13:49,204 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:49,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:49,205 INFO L85 PathProgramCache]: Analyzing trace with hash 964339266, now seen corresponding path program 1 times [2022-11-20 12:13:49,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:13:49,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929758126] [2022-11-20 12:13:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:49,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:13:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-20 12:13:50,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:13:50,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929758126] [2022-11-20 12:13:50,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929758126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:50,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:50,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:13:50,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127533287] [2022-11-20 12:13:50,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:50,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:13:50,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:13:50,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:13:50,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:13:50,409 INFO L87 Difference]: Start difference. First operand 89487 states and 96432 transitions. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 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) [2022-11-20 12:13:53,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:13:53,289 INFO L93 Difference]: Finished difference Result 185780 states and 200044 transitions. [2022-11-20 12:13:53,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:13:53,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 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 671 [2022-11-20 12:13:53,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:13:53,382 INFO L225 Difference]: With dead ends: 185780 [2022-11-20 12:13:53,382 INFO L226 Difference]: Without dead ends: 96720 [2022-11-20 12:13:53,418 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 [2022-11-20 12:13:53,419 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 223 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:13:53,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 343 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 12:13:53,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96720 states. [2022-11-20 12:13:54,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96720 to 93737. [2022-11-20 12:13:54,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93737 states, 93736 states have (on average 1.073813689510967) internal successors, (100655), 93736 states have internal predecessors, (100655), 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) [2022-11-20 12:13:54,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93737 states to 93737 states and 100655 transitions. [2022-11-20 12:13:54,933 INFO L78 Accepts]: Start accepts. Automaton has 93737 states and 100655 transitions. Word has length 671 [2022-11-20 12:13:54,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:13:54,933 INFO L495 AbstractCegarLoop]: Abstraction has 93737 states and 100655 transitions. [2022-11-20 12:13:54,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 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) [2022-11-20 12:13:54,934 INFO L276 IsEmpty]: Start isEmpty. Operand 93737 states and 100655 transitions. [2022-11-20 12:13:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2022-11-20 12:13:54,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:13:54,954 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:13:54,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:13:54,954 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:13:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:13:54,955 INFO L85 PathProgramCache]: Analyzing trace with hash 379762830, now seen corresponding path program 1 times [2022-11-20 12:13:54,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:13:54,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706177468] [2022-11-20 12:13:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:13:54,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:13:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:13:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-20 12:13:55,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:13:55,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706177468] [2022-11-20 12:13:55,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706177468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:13:55,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:13:55,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:13:55,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425497570] [2022-11-20 12:13:55,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:13:55,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:13:55,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:13:55,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:13:55,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:13:55,825 INFO L87 Difference]: Start difference. First operand 93737 states and 100655 transitions. Second operand has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 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) [2022-11-20 12:14:00,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:00,764 INFO L93 Difference]: Finished difference Result 207503 states and 222539 transitions. [2022-11-20 12:14:00,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:14:00,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 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 679 [2022-11-20 12:14:00,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:00,896 INFO L225 Difference]: With dead ends: 207503 [2022-11-20 12:14:00,896 INFO L226 Difference]: Without dead ends: 110789 [2022-11-20 12:14:00,937 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 [2022-11-20 12:14:00,938 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 686 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:00,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 247 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 12:14:01,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110789 states. [2022-11-20 12:14:02,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110789 to 103951. [2022-11-20 12:14:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103951 states, 103950 states have (on average 1.074170274170274) internal successors, (111660), 103950 states have internal predecessors, (111660), 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) [2022-11-20 12:14:02,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103951 states to 103951 states and 111660 transitions. [2022-11-20 12:14:02,932 INFO L78 Accepts]: Start accepts. Automaton has 103951 states and 111660 transitions. Word has length 679 [2022-11-20 12:14:02,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:02,933 INFO L495 AbstractCegarLoop]: Abstraction has 103951 states and 111660 transitions. [2022-11-20 12:14:02,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 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) [2022-11-20 12:14:02,933 INFO L276 IsEmpty]: Start isEmpty. Operand 103951 states and 111660 transitions. [2022-11-20 12:14:02,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2022-11-20 12:14:02,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:02,957 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:14:02,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 12:14:02,958 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:02,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:02,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1546932795, now seen corresponding path program 1 times [2022-11-20 12:14:02,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:02,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639580871] [2022-11-20 12:14:02,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:02,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:03,873 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-20 12:14:03,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:03,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639580871] [2022-11-20 12:14:03,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639580871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:03,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:14:03,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:14:03,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483722821] [2022-11-20 12:14:03,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:03,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:14:03,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:03,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:14:03,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:14:03,876 INFO L87 Difference]: Start difference. First operand 103951 states and 111660 transitions. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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) [2022-11-20 12:14:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:07,129 INFO L93 Difference]: Finished difference Result 215130 states and 230957 transitions. [2022-11-20 12:14:07,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:14:07,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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 681 [2022-11-20 12:14:07,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:07,255 INFO L225 Difference]: With dead ends: 215130 [2022-11-20 12:14:07,255 INFO L226 Difference]: Without dead ends: 111181 [2022-11-20 12:14:07,300 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 [2022-11-20 12:14:07,301 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 194 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:07,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 384 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 12:14:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111181 states. [2022-11-20 12:14:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111181 to 100117. [2022-11-20 12:14:09,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100117 states, 100116 states have (on average 1.0743137959966438) internal successors, (107556), 100116 states have internal predecessors, (107556), 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) [2022-11-20 12:14:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100117 states to 100117 states and 107556 transitions. [2022-11-20 12:14:09,534 INFO L78 Accepts]: Start accepts. Automaton has 100117 states and 107556 transitions. Word has length 681 [2022-11-20 12:14:09,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:09,534 INFO L495 AbstractCegarLoop]: Abstraction has 100117 states and 107556 transitions. [2022-11-20 12:14:09,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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) [2022-11-20 12:14:09,535 INFO L276 IsEmpty]: Start isEmpty. Operand 100117 states and 107556 transitions. [2022-11-20 12:14:09,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2022-11-20 12:14:09,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:09,558 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:09,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 12:14:09,558 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:09,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:09,559 INFO L85 PathProgramCache]: Analyzing trace with hash 538910173, now seen corresponding path program 1 times [2022-11-20 12:14:09,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:09,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645055124] [2022-11-20 12:14:09,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:09,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 750 proven. 80 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-20 12:14:11,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:11,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645055124] [2022-11-20 12:14:11,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645055124] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:11,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184229431] [2022-11-20 12:14:11,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:11,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:11,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:11,309 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:11,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbdaac9-ec5d-4064-9ac1-55ba6097e992/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:14:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:11,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:14:11,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 830 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-20 12:14:12,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:12,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184229431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:12,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:14:12,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-20 12:14:12,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737798370] [2022-11-20 12:14:12,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:12,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:14:12,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:12,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:14:12,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:14:12,042 INFO L87 Difference]: Start difference. First operand 100117 states and 107556 transitions. Second operand has 4 states, 4 states have (on average 130.25) internal successors, (521), 4 states have internal predecessors, (521), 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) [2022-11-20 12:14:15,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:15,630 INFO L93 Difference]: Finished difference Result 203207 states and 218185 transitions. [2022-11-20 12:14:15,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:14:15,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.25) internal successors, (521), 4 states have internal predecessors, (521), 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 684 [2022-11-20 12:14:15,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:15,748 INFO L225 Difference]: With dead ends: 203207 [2022-11-20 12:14:15,749 INFO L226 Difference]: Without dead ends: 103092 [2022-11-20 12:14:15,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:14:15,790 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 842 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:15,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 300 Invalid, 2298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 12:14:15,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103092 states.