./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU --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 b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:46:06,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:46:06,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:46:06,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:46:06,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:46:06,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:46:06,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:46:06,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:46:06,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:46:06,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:46:06,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:46:06,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:46:06,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:46:06,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:46:06,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:46:06,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:46:06,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:46:06,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:46:06,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:46:06,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:46:06,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:46:06,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:46:06,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:46:06,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:46:06,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:46:06,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:46:06,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:46:06,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:46:06,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:46:06,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:46:06,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:46:06,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:46:06,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:46:06,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:46:06,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:46:06,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:46:06,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:46:06,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:46:06,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:46:06,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:46:06,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:46:06,388 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:46:06,421 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:46:06,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:46:06,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:46:06,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:46:06,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:46:06,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:46:06,434 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:46:06,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:46:06,435 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:46:06,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:46:06,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:46:06,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:46:06,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:46:06,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:46:06,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:46:06,439 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:46:06,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:46:06,440 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:46:06,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:46:06,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:46:06,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:46:06,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:46:06,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:46:06,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:46:06,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:46:06,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:46:06,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:46:06,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:46:06,444 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:46:06,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:46:06,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:46:06,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:46:06,447 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_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 [2021-11-02 22:46:06,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:46:06,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:46:06,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:46:06,871 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:46:06,872 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:46:06,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2021-11-02 22:46:06,950 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/data/90a2d927e/f9968aefad3d4d82b89d81369158ff8c/FLAGb811d28c7 [2021-11-02 22:46:07,695 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:46:07,696 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2021-11-02 22:46:07,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/data/90a2d927e/f9968aefad3d4d82b89d81369158ff8c/FLAGb811d28c7 [2021-11-02 22:46:07,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/data/90a2d927e/f9968aefad3d4d82b89d81369158ff8c [2021-11-02 22:46:07,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:46:07,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:46:07,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:46:07,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:46:07,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:46:07,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:46:07" (1/1) ... [2021-11-02 22:46:07,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c728586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:07, skipping insertion in model container [2021-11-02 22:46:07,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:46:07" (1/1) ... [2021-11-02 22:46:07,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:46:08,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:46:08,377 WARN L228 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_8d49c542-4a0e-4082-ba73-072f3757f713/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2021-11-02 22:46:08,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:46:08,400 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:46:08,498 WARN L228 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_8d49c542-4a0e-4082-ba73-072f3757f713/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2021-11-02 22:46:08,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:46:08,532 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:46:08,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:08 WrapperNode [2021-11-02 22:46:08,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:46:08,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:46:08,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:46:08,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:46:08,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:08" (1/1) ... [2021-11-02 22:46:08,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:08" (1/1) ... [2021-11-02 22:46:08,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:46:08,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:46:08,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:46:08,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:46:08,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:08" (1/1) ... [2021-11-02 22:46:08,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:08" (1/1) ... [2021-11-02 22:46:08,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:08" (1/1) ... [2021-11-02 22:46:08,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:08" (1/1) ... [2021-11-02 22:46:08,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:08" (1/1) ... [2021-11-02 22:46:08,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:08" (1/1) ... [2021-11-02 22:46:08,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:08" (1/1) ... [2021-11-02 22:46:08,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:46:08,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:46:08,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:46:08,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:46:08,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:08" (1/1) ... [2021-11-02 22:46:08,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:46:08,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:46:08,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:46:08,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:46:08,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:46:08,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:46:08,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:46:08,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:46:10,224 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:46:10,225 INFO L299 CfgBuilder]: Removed 121 assume(true) statements. [2021-11-02 22:46:10,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:46:10 BoogieIcfgContainer [2021-11-02 22:46:10,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:46:10,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:46:10,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:46:10,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:46:10,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:46:07" (1/3) ... [2021-11-02 22:46:10,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b548bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:46:10, skipping insertion in model container [2021-11-02 22:46:10,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:08" (2/3) ... [2021-11-02 22:46:10,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b548bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:46:10, skipping insertion in model container [2021-11-02 22:46:10,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:46:10" (3/3) ... [2021-11-02 22:46:10,241 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2021-11-02 22:46:10,248 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:46:10,249 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-11-02 22:46:10,310 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:46:10,318 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:46:10,319 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-11-02 22:46:10,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 293 states, 269 states have (on average 1.7063197026022305) internal successors, (459), 292 states have internal predecessors, (459), 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) [2021-11-02 22:46:10,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 22:46:10,357 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:10,358 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:10,358 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:10,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:10,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1350186974, now seen corresponding path program 1 times [2021-11-02 22:46:10,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:10,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204777655] [2021-11-02 22:46:10,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:10,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:10,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:10,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204777655] [2021-11-02 22:46:10,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204777655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:10,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:10,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:46:10,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560084810] [2021-11-02 22:46:10,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:46:10,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:46:10,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:46:10,645 INFO L87 Difference]: Start difference. First operand has 293 states, 269 states have (on average 1.7063197026022305) internal successors, (459), 292 states have internal predecessors, (459), 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 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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) [2021-11-02 22:46:10,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:10,709 INFO L93 Difference]: Finished difference Result 570 states and 889 transitions. [2021-11-02 22:46:10,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:46:10,711 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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 33 [2021-11-02 22:46:10,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:10,729 INFO L225 Difference]: With dead ends: 570 [2021-11-02 22:46:10,729 INFO L226 Difference]: Without dead ends: 289 [2021-11-02 22:46:10,734 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:46:10,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-02 22:46:10,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-11-02 22:46:10,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 266 states have (on average 1.5902255639097744) internal successors, (423), 288 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) [2021-11-02 22:46:10,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 423 transitions. [2021-11-02 22:46:10,851 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 423 transitions. Word has length 33 [2021-11-02 22:46:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:10,851 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 423 transitions. [2021-11-02 22:46:10,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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) [2021-11-02 22:46:10,852 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 423 transitions. [2021-11-02 22:46:10,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 22:46:10,854 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:10,854 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:10,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:46:10,855 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:10,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:10,856 INFO L85 PathProgramCache]: Analyzing trace with hash 346492376, now seen corresponding path program 1 times [2021-11-02 22:46:10,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:10,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527880247] [2021-11-02 22:46:10,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:10,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:11,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:11,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527880247] [2021-11-02 22:46:11,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527880247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:11,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:11,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:46:11,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114025983] [2021-11-02 22:46:11,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:46:11,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:11,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:46:11,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:46:11,050 INFO L87 Difference]: Start difference. First operand 289 states and 423 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-11-02 22:46:11,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:11,117 INFO L93 Difference]: Finished difference Result 564 states and 820 transitions. [2021-11-02 22:46:11,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:46:11,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2021-11-02 22:46:11,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:11,122 INFO L225 Difference]: With dead ends: 564 [2021-11-02 22:46:11,122 INFO L226 Difference]: Without dead ends: 289 [2021-11-02 22:46:11,125 INFO L786 BasicCegarLoop]: 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 [2021-11-02 22:46:11,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-02 22:46:11,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-11-02 22:46:11,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 266 states have (on average 1.5451127819548873) internal successors, (411), 288 states have internal predecessors, (411), 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) [2021-11-02 22:46:11,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 411 transitions. [2021-11-02 22:46:11,148 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 411 transitions. Word has length 33 [2021-11-02 22:46:11,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:11,153 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 411 transitions. [2021-11-02 22:46:11,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-11-02 22:46:11,154 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 411 transitions. [2021-11-02 22:46:11,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-02 22:46:11,158 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:11,158 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:11,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:46:11,159 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:11,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:11,161 INFO L85 PathProgramCache]: Analyzing trace with hash 792768919, now seen corresponding path program 1 times [2021-11-02 22:46:11,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:11,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163165185] [2021-11-02 22:46:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:11,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:11,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:11,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163165185] [2021-11-02 22:46:11,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163165185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:11,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:11,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:46:11,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774655323] [2021-11-02 22:46:11,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:46:11,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:11,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:46:11,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:11,418 INFO L87 Difference]: Start difference. First operand 289 states and 411 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-02 22:46:11,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:11,502 INFO L93 Difference]: Finished difference Result 591 states and 849 transitions. [2021-11-02 22:46:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:46:11,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-11-02 22:46:11,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:11,510 INFO L225 Difference]: With dead ends: 591 [2021-11-02 22:46:11,510 INFO L226 Difference]: Without dead ends: 319 [2021-11-02 22:46:11,514 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-11-02 22:46:11,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 265. [2021-11-02 22:46:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 246 states have (on average 1.524390243902439) internal successors, (375), 264 states have internal predecessors, (375), 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) [2021-11-02 22:46:11,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 375 transitions. [2021-11-02 22:46:11,547 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 375 transitions. Word has length 44 [2021-11-02 22:46:11,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:11,548 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 375 transitions. [2021-11-02 22:46:11,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-02 22:46:11,548 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 375 transitions. [2021-11-02 22:46:11,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 22:46:11,556 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:11,556 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:11,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:46:11,557 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:11,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:11,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1551516849, now seen corresponding path program 1 times [2021-11-02 22:46:11,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:11,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324276275] [2021-11-02 22:46:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:11,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:11,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:11,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:11,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324276275] [2021-11-02 22:46:11,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324276275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:11,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:11,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:46:11,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094491779] [2021-11-02 22:46:11,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:46:11,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:11,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:46:11,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:11,741 INFO L87 Difference]: Start difference. First operand 265 states and 375 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2021-11-02 22:46:11,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:11,786 INFO L93 Difference]: Finished difference Result 742 states and 1062 transitions. [2021-11-02 22:46:11,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:46:11,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2021-11-02 22:46:11,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:11,792 INFO L225 Difference]: With dead ends: 742 [2021-11-02 22:46:11,793 INFO L226 Difference]: Without dead ends: 494 [2021-11-02 22:46:11,795 INFO L786 BasicCegarLoop]: 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 [2021-11-02 22:46:11,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-11-02 22:46:11,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 300. [2021-11-02 22:46:11,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 281 states have (on average 1.519572953736655) internal successors, (427), 299 states have internal predecessors, (427), 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) [2021-11-02 22:46:11,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 427 transitions. [2021-11-02 22:46:11,823 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 427 transitions. Word has length 53 [2021-11-02 22:46:11,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:11,826 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 427 transitions. [2021-11-02 22:46:11,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2021-11-02 22:46:11,826 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 427 transitions. [2021-11-02 22:46:11,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 22:46:11,830 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:11,830 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:11,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:46:11,831 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:11,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:11,833 INFO L85 PathProgramCache]: Analyzing trace with hash -357597848, now seen corresponding path program 1 times [2021-11-02 22:46:11,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:11,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695749447] [2021-11-02 22:46:11,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:11,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:11,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:11,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695749447] [2021-11-02 22:46:11,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695749447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:11,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:11,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:46:11,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239938576] [2021-11-02 22:46:11,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:46:11,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:11,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:46:11,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:11,957 INFO L87 Difference]: Start difference. First operand 300 states and 427 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2021-11-02 22:46:12,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:12,016 INFO L93 Difference]: Finished difference Result 822 states and 1181 transitions. [2021-11-02 22:46:12,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:46:12,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2021-11-02 22:46:12,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:12,023 INFO L225 Difference]: With dead ends: 822 [2021-11-02 22:46:12,023 INFO L226 Difference]: Without dead ends: 539 [2021-11-02 22:46:12,024 INFO L786 BasicCegarLoop]: 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 [2021-11-02 22:46:12,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-11-02 22:46:12,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 325. [2021-11-02 22:46:12,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 306 states have (on average 1.5196078431372548) internal successors, (465), 324 states have internal predecessors, (465), 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) [2021-11-02 22:46:12,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 465 transitions. [2021-11-02 22:46:12,057 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 465 transitions. Word has length 54 [2021-11-02 22:46:12,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:12,058 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 465 transitions. [2021-11-02 22:46:12,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2021-11-02 22:46:12,060 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 465 transitions. [2021-11-02 22:46:12,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 22:46:12,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:12,063 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:12,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:46:12,063 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:12,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:12,064 INFO L85 PathProgramCache]: Analyzing trace with hash 322460522, now seen corresponding path program 1 times [2021-11-02 22:46:12,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:12,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34502498] [2021-11-02 22:46:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:12,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:12,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:12,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34502498] [2021-11-02 22:46:12,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34502498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:12,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:12,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:46:12,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868793973] [2021-11-02 22:46:12,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:46:12,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:12,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:46:12,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:46:12,215 INFO L87 Difference]: Start difference. First operand 325 states and 465 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-02 22:46:12,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:12,485 INFO L93 Difference]: Finished difference Result 1007 states and 1452 transitions. [2021-11-02 22:46:12,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:46:12,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2021-11-02 22:46:12,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:12,500 INFO L225 Difference]: With dead ends: 1007 [2021-11-02 22:46:12,501 INFO L226 Difference]: Without dead ends: 699 [2021-11-02 22:46:12,502 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:46:12,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-11-02 22:46:12,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 419. [2021-11-02 22:46:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 400 states have (on average 1.49) internal successors, (596), 418 states have internal predecessors, (596), 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) [2021-11-02 22:46:12,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 596 transitions. [2021-11-02 22:46:12,536 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 596 transitions. Word has length 54 [2021-11-02 22:46:12,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:12,536 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 596 transitions. [2021-11-02 22:46:12,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-02 22:46:12,537 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 596 transitions. [2021-11-02 22:46:12,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-02 22:46:12,538 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:12,538 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:12,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:46:12,538 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:12,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:12,539 INFO L85 PathProgramCache]: Analyzing trace with hash -2009785193, now seen corresponding path program 1 times [2021-11-02 22:46:12,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:12,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102449173] [2021-11-02 22:46:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:12,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:12,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:12,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102449173] [2021-11-02 22:46:12,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102449173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:12,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:12,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:46:12,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858564181] [2021-11-02 22:46:12,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:46:12,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:12,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:46:12,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:46:12,633 INFO L87 Difference]: Start difference. First operand 419 states and 596 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-11-02 22:46:12,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:12,907 INFO L93 Difference]: Finished difference Result 1011 states and 1452 transitions. [2021-11-02 22:46:12,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:46:12,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2021-11-02 22:46:12,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:12,913 INFO L225 Difference]: With dead ends: 1011 [2021-11-02 22:46:12,913 INFO L226 Difference]: Without dead ends: 703 [2021-11-02 22:46:12,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:46:12,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-11-02 22:46:12,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 427. [2021-11-02 22:46:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 408 states have (on average 1.4803921568627452) internal successors, (604), 426 states have internal predecessors, (604), 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) [2021-11-02 22:46:12,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 604 transitions. [2021-11-02 22:46:12,946 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 604 transitions. Word has length 55 [2021-11-02 22:46:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:12,947 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 604 transitions. [2021-11-02 22:46:12,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-11-02 22:46:12,947 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 604 transitions. [2021-11-02 22:46:12,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 22:46:12,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:12,949 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:12,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:46:12,949 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:12,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:12,950 INFO L85 PathProgramCache]: Analyzing trace with hash -621480091, now seen corresponding path program 1 times [2021-11-02 22:46:12,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:12,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448992227] [2021-11-02 22:46:12,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:12,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:13,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:13,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448992227] [2021-11-02 22:46:13,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448992227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:13,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:13,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:46:13,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029077059] [2021-11-02 22:46:13,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:46:13,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:13,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:46:13,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:46:13,108 INFO L87 Difference]: Start difference. First operand 427 states and 604 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-02 22:46:13,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:13,399 INFO L93 Difference]: Finished difference Result 1011 states and 1444 transitions. [2021-11-02 22:46:13,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:46:13,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2021-11-02 22:46:13,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:13,411 INFO L225 Difference]: With dead ends: 1011 [2021-11-02 22:46:13,411 INFO L226 Difference]: Without dead ends: 703 [2021-11-02 22:46:13,412 INFO L786 BasicCegarLoop]: 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 [2021-11-02 22:46:13,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-11-02 22:46:13,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 427. [2021-11-02 22:46:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 408 states have (on average 1.4705882352941178) internal successors, (600), 426 states have internal predecessors, (600), 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) [2021-11-02 22:46:13,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 600 transitions. [2021-11-02 22:46:13,448 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 600 transitions. Word has length 57 [2021-11-02 22:46:13,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:13,449 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 600 transitions. [2021-11-02 22:46:13,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-02 22:46:13,449 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 600 transitions. [2021-11-02 22:46:13,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 22:46:13,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:13,450 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:13,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:46:13,451 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:13,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:13,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1688514268, now seen corresponding path program 1 times [2021-11-02 22:46:13,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:13,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437368039] [2021-11-02 22:46:13,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:13,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:13,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:13,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437368039] [2021-11-02 22:46:13,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437368039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:13,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:13,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:46:13,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659555566] [2021-11-02 22:46:13,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:46:13,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:13,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:46:13,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:13,572 INFO L87 Difference]: Start difference. First operand 427 states and 600 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-02 22:46:13,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:13,630 INFO L93 Difference]: Finished difference Result 859 states and 1231 transitions. [2021-11-02 22:46:13,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:46:13,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2021-11-02 22:46:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:13,636 INFO L225 Difference]: With dead ends: 859 [2021-11-02 22:46:13,636 INFO L226 Difference]: Without dead ends: 551 [2021-11-02 22:46:13,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:13,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-11-02 22:46:13,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 422. [2021-11-02 22:46:13,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 404 states have (on average 1.4653465346534653) internal successors, (592), 421 states have internal predecessors, (592), 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) [2021-11-02 22:46:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 592 transitions. [2021-11-02 22:46:13,666 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 592 transitions. Word has length 58 [2021-11-02 22:46:13,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:13,667 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 592 transitions. [2021-11-02 22:46:13,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-02 22:46:13,667 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 592 transitions. [2021-11-02 22:46:13,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:46:13,668 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:13,668 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:13,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:46:13,668 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:13,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:13,669 INFO L85 PathProgramCache]: Analyzing trace with hash -741802892, now seen corresponding path program 1 times [2021-11-02 22:46:13,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:13,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938979007] [2021-11-02 22:46:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:13,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:13,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:13,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938979007] [2021-11-02 22:46:13,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938979007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:13,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:13,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:46:13,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161566513] [2021-11-02 22:46:13,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:46:13,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:13,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:46:13,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:13,753 INFO L87 Difference]: Start difference. First operand 422 states and 592 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-02 22:46:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:13,833 INFO L93 Difference]: Finished difference Result 858 states and 1230 transitions. [2021-11-02 22:46:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:46:13,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2021-11-02 22:46:13,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:13,838 INFO L225 Difference]: With dead ends: 858 [2021-11-02 22:46:13,838 INFO L226 Difference]: Without dead ends: 555 [2021-11-02 22:46:13,839 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:13,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-02 22:46:13,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 402. [2021-11-02 22:46:13,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 388 states have (on average 1.443298969072165) internal successors, (560), 401 states have internal predecessors, (560), 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) [2021-11-02 22:46:13,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 560 transitions. [2021-11-02 22:46:13,868 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 560 transitions. Word has length 62 [2021-11-02 22:46:13,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:13,868 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 560 transitions. [2021-11-02 22:46:13,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-02 22:46:13,869 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 560 transitions. [2021-11-02 22:46:13,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 22:46:13,869 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:13,870 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:13,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 22:46:13,870 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:13,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:13,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1449842060, now seen corresponding path program 1 times [2021-11-02 22:46:13,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:13,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050963660] [2021-11-02 22:46:13,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:13,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:13,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:13,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:13,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050963660] [2021-11-02 22:46:13,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050963660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:13,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:13,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:46:13,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814651572] [2021-11-02 22:46:13,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:46:13,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:13,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:46:13,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:13,956 INFO L87 Difference]: Start difference. First operand 402 states and 560 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-02 22:46:14,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:14,021 INFO L93 Difference]: Finished difference Result 826 states and 1174 transitions. [2021-11-02 22:46:14,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:46:14,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-02 22:46:14,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:14,049 INFO L225 Difference]: With dead ends: 826 [2021-11-02 22:46:14,049 INFO L226 Difference]: Without dead ends: 543 [2021-11-02 22:46:14,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-11-02 22:46:14,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 390. [2021-11-02 22:46:14,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 378 states have (on average 1.433862433862434) internal successors, (542), 389 states have internal predecessors, (542), 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) [2021-11-02 22:46:14,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 542 transitions. [2021-11-02 22:46:14,082 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 542 transitions. Word has length 66 [2021-11-02 22:46:14,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:14,083 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 542 transitions. [2021-11-02 22:46:14,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-02 22:46:14,083 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 542 transitions. [2021-11-02 22:46:14,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 22:46:14,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:14,091 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:14,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 22:46:14,092 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:14,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2013886397, now seen corresponding path program 1 times [2021-11-02 22:46:14,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:14,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706305710] [2021-11-02 22:46:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:14,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:14,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:14,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706305710] [2021-11-02 22:46:14,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706305710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:14,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:14,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:46:14,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549092963] [2021-11-02 22:46:14,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:46:14,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:14,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:46:14,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:46:14,177 INFO L87 Difference]: Start difference. First operand 390 states and 542 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2021-11-02 22:46:14,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:14,361 INFO L93 Difference]: Finished difference Result 1436 states and 2033 transitions. [2021-11-02 22:46:14,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:46:14,361 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 67 [2021-11-02 22:46:14,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:14,370 INFO L225 Difference]: With dead ends: 1436 [2021-11-02 22:46:14,370 INFO L226 Difference]: Without dead ends: 1165 [2021-11-02 22:46:14,371 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:46:14,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-11-02 22:46:14,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 411. [2021-11-02 22:46:14,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 399 states have (on average 1.418546365914787) internal successors, (566), 410 states have internal predecessors, (566), 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) [2021-11-02 22:46:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 566 transitions. [2021-11-02 22:46:14,421 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 566 transitions. Word has length 67 [2021-11-02 22:46:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:14,422 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 566 transitions. [2021-11-02 22:46:14,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2021-11-02 22:46:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 566 transitions. [2021-11-02 22:46:14,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:46:14,424 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:14,424 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:14,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 22:46:14,424 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:14,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:14,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1216909730, now seen corresponding path program 1 times [2021-11-02 22:46:14,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:14,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223929211] [2021-11-02 22:46:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:14,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:14,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:14,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223929211] [2021-11-02 22:46:14,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223929211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:14,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:14,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:46:14,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053692042] [2021-11-02 22:46:14,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:46:14,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:14,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:46:14,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:14,549 INFO L87 Difference]: Start difference. First operand 411 states and 566 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-02 22:46:14,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:14,647 INFO L93 Difference]: Finished difference Result 843 states and 1190 transitions. [2021-11-02 22:46:14,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:46:14,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2021-11-02 22:46:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:14,651 INFO L225 Difference]: With dead ends: 843 [2021-11-02 22:46:14,652 INFO L226 Difference]: Without dead ends: 572 [2021-11-02 22:46:14,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:14,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-11-02 22:46:14,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 391. [2021-11-02 22:46:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 383 states have (on average 1.3942558746736293) internal successors, (534), 390 states have internal predecessors, (534), 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) [2021-11-02 22:46:14,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 534 transitions. [2021-11-02 22:46:14,691 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 534 transitions. Word has length 69 [2021-11-02 22:46:14,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:14,692 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 534 transitions. [2021-11-02 22:46:14,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-02 22:46:14,692 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 534 transitions. [2021-11-02 22:46:14,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 22:46:14,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:14,694 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:14,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 22:46:14,694 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:14,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:14,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1979952454, now seen corresponding path program 1 times [2021-11-02 22:46:14,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:14,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062008507] [2021-11-02 22:46:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:14,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:14,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:14,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062008507] [2021-11-02 22:46:14,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062008507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:14,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:14,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:46:14,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279847333] [2021-11-02 22:46:14,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:46:14,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:14,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:46:14,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:14,818 INFO L87 Difference]: Start difference. First operand 391 states and 534 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-11-02 22:46:14,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:14,903 INFO L93 Difference]: Finished difference Result 811 states and 1134 transitions. [2021-11-02 22:46:14,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:46:14,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2021-11-02 22:46:14,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:14,907 INFO L225 Difference]: With dead ends: 811 [2021-11-02 22:46:14,907 INFO L226 Difference]: Without dead ends: 560 [2021-11-02 22:46:14,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:14,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-11-02 22:46:14,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 379. [2021-11-02 22:46:14,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 373 states have (on average 1.383378016085791) internal successors, (516), 378 states have internal predecessors, (516), 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) [2021-11-02 22:46:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 516 transitions. [2021-11-02 22:46:14,945 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 516 transitions. Word has length 73 [2021-11-02 22:46:14,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:14,945 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 516 transitions. [2021-11-02 22:46:14,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-11-02 22:46:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 516 transitions. [2021-11-02 22:46:14,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 22:46:14,947 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:14,947 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:14,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 22:46:14,947 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:14,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:14,948 INFO L85 PathProgramCache]: Analyzing trace with hash -797041989, now seen corresponding path program 1 times [2021-11-02 22:46:14,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:14,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471073678] [2021-11-02 22:46:14,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:14,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:15,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:15,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471073678] [2021-11-02 22:46:15,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471073678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:15,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:15,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:46:15,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11284688] [2021-11-02 22:46:15,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:46:15,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:15,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:46:15,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:46:15,112 INFO L87 Difference]: Start difference. First operand 379 states and 516 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2021-11-02 22:46:15,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:15,358 INFO L93 Difference]: Finished difference Result 1083 states and 1512 transitions. [2021-11-02 22:46:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:46:15,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 76 [2021-11-02 22:46:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:15,365 INFO L225 Difference]: With dead ends: 1083 [2021-11-02 22:46:15,365 INFO L226 Difference]: Without dead ends: 844 [2021-11-02 22:46:15,366 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:46:15,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-11-02 22:46:15,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 404. [2021-11-02 22:46:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 398 states have (on average 1.3844221105527639) internal successors, (551), 403 states have internal predecessors, (551), 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) [2021-11-02 22:46:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 551 transitions. [2021-11-02 22:46:15,410 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 551 transitions. Word has length 76 [2021-11-02 22:46:15,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:15,410 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 551 transitions. [2021-11-02 22:46:15,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2021-11-02 22:46:15,411 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 551 transitions. [2021-11-02 22:46:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 22:46:15,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:15,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:15,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 22:46:15,412 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:15,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:15,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1479160478, now seen corresponding path program 1 times [2021-11-02 22:46:15,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:15,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873759881] [2021-11-02 22:46:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:15,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:15,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:15,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873759881] [2021-11-02 22:46:15,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873759881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:15,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:15,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:46:15,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825457852] [2021-11-02 22:46:15,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:46:15,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:15,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:46:15,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:46:15,577 INFO L87 Difference]: Start difference. First operand 404 states and 551 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2021-11-02 22:46:15,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:15,999 INFO L93 Difference]: Finished difference Result 1408 states and 1955 transitions. [2021-11-02 22:46:15,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:46:16,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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 76 [2021-11-02 22:46:16,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:16,008 INFO L225 Difference]: With dead ends: 1408 [2021-11-02 22:46:16,008 INFO L226 Difference]: Without dead ends: 1151 [2021-11-02 22:46:16,009 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:46:16,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2021-11-02 22:46:16,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 432. [2021-11-02 22:46:16,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 426 states have (on average 1.3661971830985915) internal successors, (582), 431 states have internal predecessors, (582), 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) [2021-11-02 22:46:16,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 582 transitions. [2021-11-02 22:46:16,067 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 582 transitions. Word has length 76 [2021-11-02 22:46:16,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:16,068 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 582 transitions. [2021-11-02 22:46:16,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2021-11-02 22:46:16,068 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 582 transitions. [2021-11-02 22:46:16,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 22:46:16,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:16,069 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:16,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 22:46:16,070 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:16,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:16,070 INFO L85 PathProgramCache]: Analyzing trace with hash 532768487, now seen corresponding path program 1 times [2021-11-02 22:46:16,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:16,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136646629] [2021-11-02 22:46:16,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:16,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:16,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:16,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136646629] [2021-11-02 22:46:16,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136646629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:16,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:16,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:46:16,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123924767] [2021-11-02 22:46:16,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:46:16,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:16,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:46:16,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:46:16,131 INFO L87 Difference]: Start difference. First operand 432 states and 582 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-11-02 22:46:16,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:16,363 INFO L93 Difference]: Finished difference Result 1115 states and 1519 transitions. [2021-11-02 22:46:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:46:16,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 76 [2021-11-02 22:46:16,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:16,370 INFO L225 Difference]: With dead ends: 1115 [2021-11-02 22:46:16,371 INFO L226 Difference]: Without dead ends: 852 [2021-11-02 22:46:16,372 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:46:16,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-11-02 22:46:16,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 653. [2021-11-02 22:46:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 647 states have (on average 1.3446676970633693) internal successors, (870), 652 states have internal predecessors, (870), 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) [2021-11-02 22:46:16,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 870 transitions. [2021-11-02 22:46:16,470 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 870 transitions. Word has length 76 [2021-11-02 22:46:16,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:16,470 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 870 transitions. [2021-11-02 22:46:16,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-11-02 22:46:16,471 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 870 transitions. [2021-11-02 22:46:16,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:46:16,473 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:16,473 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:16,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 22:46:16,474 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:16,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:16,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1675634663, now seen corresponding path program 1 times [2021-11-02 22:46:16,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:16,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342898243] [2021-11-02 22:46:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:16,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:16,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:16,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342898243] [2021-11-02 22:46:16,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342898243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:16,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:16,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:46:16,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908043577] [2021-11-02 22:46:16,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:46:16,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:16,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:46:16,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:16,588 INFO L87 Difference]: Start difference. First operand 653 states and 870 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-11-02 22:46:16,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:16,710 INFO L93 Difference]: Finished difference Result 1138 states and 1550 transitions. [2021-11-02 22:46:16,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:46:16,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2021-11-02 22:46:16,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:16,716 INFO L225 Difference]: With dead ends: 1138 [2021-11-02 22:46:16,716 INFO L226 Difference]: Without dead ends: 760 [2021-11-02 22:46:16,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:16,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-11-02 22:46:16,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 649. [2021-11-02 22:46:16,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 644 states have (on average 1.3400621118012421) internal successors, (863), 648 states have internal predecessors, (863), 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) [2021-11-02 22:46:16,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 863 transitions. [2021-11-02 22:46:16,796 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 863 transitions. Word has length 77 [2021-11-02 22:46:16,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:16,796 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 863 transitions. [2021-11-02 22:46:16,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-11-02 22:46:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 863 transitions. [2021-11-02 22:46:16,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 22:46:16,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:16,798 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:16,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 22:46:16,800 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:16,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:16,800 INFO L85 PathProgramCache]: Analyzing trace with hash -43406846, now seen corresponding path program 1 times [2021-11-02 22:46:16,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:16,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717870812] [2021-11-02 22:46:16,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:16,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:16,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:16,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717870812] [2021-11-02 22:46:16,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717870812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:16,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:16,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:46:16,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979400419] [2021-11-02 22:46:16,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:46:16,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:16,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:46:16,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:46:16,909 INFO L87 Difference]: Start difference. First operand 649 states and 863 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-11-02 22:46:17,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:17,136 INFO L93 Difference]: Finished difference Result 1453 states and 1955 transitions. [2021-11-02 22:46:17,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:46:17,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 78 [2021-11-02 22:46:17,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:17,144 INFO L225 Difference]: With dead ends: 1453 [2021-11-02 22:46:17,144 INFO L226 Difference]: Without dead ends: 1065 [2021-11-02 22:46:17,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:46:17,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-11-02 22:46:17,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 868. [2021-11-02 22:46:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 863 states have (on average 1.3267670915411356) internal successors, (1145), 867 states have internal predecessors, (1145), 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) [2021-11-02 22:46:17,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1145 transitions. [2021-11-02 22:46:17,245 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1145 transitions. Word has length 78 [2021-11-02 22:46:17,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:17,246 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1145 transitions. [2021-11-02 22:46:17,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-11-02 22:46:17,246 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1145 transitions. [2021-11-02 22:46:17,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 22:46:17,248 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:17,248 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:17,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 22:46:17,249 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:17,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:17,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1923184217, now seen corresponding path program 1 times [2021-11-02 22:46:17,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:17,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775131999] [2021-11-02 22:46:17,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:17,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:17,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:17,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775131999] [2021-11-02 22:46:17,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775131999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:17,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:17,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:46:17,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723403917] [2021-11-02 22:46:17,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:46:17,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:17,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:46:17,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:17,290 INFO L87 Difference]: Start difference. First operand 868 states and 1145 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-11-02 22:46:17,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:17,540 INFO L93 Difference]: Finished difference Result 2026 states and 2690 transitions. [2021-11-02 22:46:17,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:46:17,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-11-02 22:46:17,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:17,549 INFO L225 Difference]: With dead ends: 2026 [2021-11-02 22:46:17,550 INFO L226 Difference]: Without dead ends: 1417 [2021-11-02 22:46:17,551 INFO L786 BasicCegarLoop]: 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 [2021-11-02 22:46:17,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2021-11-02 22:46:17,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 870. [2021-11-02 22:46:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 865 states have (on average 1.3260115606936416) internal successors, (1147), 869 states have internal predecessors, (1147), 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) [2021-11-02 22:46:17,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1147 transitions. [2021-11-02 22:46:17,693 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1147 transitions. Word has length 78 [2021-11-02 22:46:17,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:17,693 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 1147 transitions. [2021-11-02 22:46:17,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-11-02 22:46:17,694 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1147 transitions. [2021-11-02 22:46:17,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 22:46:17,695 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:17,696 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:17,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 22:46:17,696 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:17,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:17,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1579042436, now seen corresponding path program 1 times [2021-11-02 22:46:17,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:17,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337353078] [2021-11-02 22:46:17,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:17,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:17,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:17,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337353078] [2021-11-02 22:46:17,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337353078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:17,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:17,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:46:17,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087564217] [2021-11-02 22:46:17,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:46:17,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:17,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:46:17,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:46:17,818 INFO L87 Difference]: Start difference. First operand 870 states and 1147 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2021-11-02 22:46:18,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:18,529 INFO L93 Difference]: Finished difference Result 3233 states and 4332 transitions. [2021-11-02 22:46:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:46:18,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 78 [2021-11-02 22:46:18,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:18,549 INFO L225 Difference]: With dead ends: 3233 [2021-11-02 22:46:18,549 INFO L226 Difference]: Without dead ends: 2713 [2021-11-02 22:46:18,552 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:46:18,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2021-11-02 22:46:18,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 996. [2021-11-02 22:46:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 991 states have (on average 1.3057517658930373) internal successors, (1294), 995 states have internal predecessors, (1294), 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) [2021-11-02 22:46:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1294 transitions. [2021-11-02 22:46:18,715 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1294 transitions. Word has length 78 [2021-11-02 22:46:18,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:18,716 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1294 transitions. [2021-11-02 22:46:18,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2021-11-02 22:46:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1294 transitions. [2021-11-02 22:46:18,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:46:18,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:18,719 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:18,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 22:46:18,719 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:18,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:18,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1296090681, now seen corresponding path program 1 times [2021-11-02 22:46:18,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:18,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29033818] [2021-11-02 22:46:18,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:18,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:18,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:18,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29033818] [2021-11-02 22:46:18,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29033818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:18,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:18,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:46:18,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580827779] [2021-11-02 22:46:18,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:46:18,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:18,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:46:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:46:18,794 INFO L87 Difference]: Start difference. First operand 996 states and 1294 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2021-11-02 22:46:19,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:19,136 INFO L93 Difference]: Finished difference Result 2394 states and 3157 transitions. [2021-11-02 22:46:19,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:46:19,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 79 [2021-11-02 22:46:19,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:19,150 INFO L225 Difference]: With dead ends: 2394 [2021-11-02 22:46:19,150 INFO L226 Difference]: Without dead ends: 1826 [2021-11-02 22:46:19,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:46:19,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2021-11-02 22:46:19,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1351. [2021-11-02 22:46:19,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 1346 states have (on average 1.3008915304606241) internal successors, (1751), 1350 states have internal predecessors, (1751), 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) [2021-11-02 22:46:19,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 1751 transitions. [2021-11-02 22:46:19,361 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 1751 transitions. Word has length 79 [2021-11-02 22:46:19,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:19,362 INFO L470 AbstractCegarLoop]: Abstraction has 1351 states and 1751 transitions. [2021-11-02 22:46:19,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2021-11-02 22:46:19,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 1751 transitions. [2021-11-02 22:46:19,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 22:46:19,365 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:19,365 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:19,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 22:46:19,366 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:19,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:19,366 INFO L85 PathProgramCache]: Analyzing trace with hash -127959653, now seen corresponding path program 1 times [2021-11-02 22:46:19,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:19,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149214194] [2021-11-02 22:46:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:19,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:19,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:19,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149214194] [2021-11-02 22:46:19,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149214194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:19,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:19,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:46:19,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945938447] [2021-11-02 22:46:19,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:46:19,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:19,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:46:19,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:46:19,459 INFO L87 Difference]: Start difference. First operand 1351 states and 1751 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-11-02 22:46:19,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:19,701 INFO L93 Difference]: Finished difference Result 2691 states and 3515 transitions. [2021-11-02 22:46:19,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:46:19,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 80 [2021-11-02 22:46:19,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:19,711 INFO L225 Difference]: With dead ends: 2691 [2021-11-02 22:46:19,712 INFO L226 Difference]: Without dead ends: 1416 [2021-11-02 22:46:19,714 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:46:19,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-11-02 22:46:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1055. [2021-11-02 22:46:19,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1050 states have (on average 1.3161904761904761) internal successors, (1382), 1054 states have internal predecessors, (1382), 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) [2021-11-02 22:46:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1382 transitions. [2021-11-02 22:46:19,908 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1382 transitions. Word has length 80 [2021-11-02 22:46:19,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:19,909 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 1382 transitions. [2021-11-02 22:46:19,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-11-02 22:46:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1382 transitions. [2021-11-02 22:46:19,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 22:46:19,911 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:19,911 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:19,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 22:46:19,912 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:19,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:19,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1884673237, now seen corresponding path program 1 times [2021-11-02 22:46:19,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:19,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538684293] [2021-11-02 22:46:19,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:19,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:20,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:20,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538684293] [2021-11-02 22:46:20,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538684293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:20,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:20,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:46:20,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957097979] [2021-11-02 22:46:20,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:46:20,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:20,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:46:20,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:46:20,066 INFO L87 Difference]: Start difference. First operand 1055 states and 1382 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-11-02 22:46:20,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:20,529 INFO L93 Difference]: Finished difference Result 2881 states and 3895 transitions. [2021-11-02 22:46:20,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:46:20,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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 81 [2021-11-02 22:46:20,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:20,544 INFO L225 Difference]: With dead ends: 2881 [2021-11-02 22:46:20,545 INFO L226 Difference]: Without dead ends: 2073 [2021-11-02 22:46:20,547 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:46:20,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2021-11-02 22:46:20,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1055. [2021-11-02 22:46:20,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1050 states have (on average 1.3114285714285714) internal successors, (1377), 1054 states have internal predecessors, (1377), 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) [2021-11-02 22:46:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1377 transitions. [2021-11-02 22:46:20,749 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1377 transitions. Word has length 81 [2021-11-02 22:46:20,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:20,749 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 1377 transitions. [2021-11-02 22:46:20,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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) [2021-11-02 22:46:20,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1377 transitions. [2021-11-02 22:46:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 22:46:20,751 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:20,751 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:20,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 22:46:20,752 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:20,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1245633243, now seen corresponding path program 1 times [2021-11-02 22:46:20,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:20,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473391948] [2021-11-02 22:46:20,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:20,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:20,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:20,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473391948] [2021-11-02 22:46:20,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473391948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:20,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:20,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:46:20,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134449887] [2021-11-02 22:46:20,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:46:20,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:20,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:46:20,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:20,808 INFO L87 Difference]: Start difference. First operand 1055 states and 1377 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-02 22:46:21,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:21,121 INFO L93 Difference]: Finished difference Result 2489 states and 3269 transitions. [2021-11-02 22:46:21,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:46:21,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2021-11-02 22:46:21,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:21,132 INFO L225 Difference]: With dead ends: 2489 [2021-11-02 22:46:21,132 INFO L226 Difference]: Without dead ends: 1584 [2021-11-02 22:46:21,134 INFO L786 BasicCegarLoop]: 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 [2021-11-02 22:46:21,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-11-02 22:46:21,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1061. [2021-11-02 22:46:21,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1056 states have (on average 1.3096590909090908) internal successors, (1383), 1060 states have internal predecessors, (1383), 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) [2021-11-02 22:46:21,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1383 transitions. [2021-11-02 22:46:21,279 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1383 transitions. Word has length 82 [2021-11-02 22:46:21,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:21,279 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 1383 transitions. [2021-11-02 22:46:21,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-02 22:46:21,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1383 transitions. [2021-11-02 22:46:21,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 22:46:21,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:21,281 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:21,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-02 22:46:21,282 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:21,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:21,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1936137551, now seen corresponding path program 1 times [2021-11-02 22:46:21,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:21,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666879874] [2021-11-02 22:46:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:21,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:21,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:21,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666879874] [2021-11-02 22:46:21,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666879874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:21,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:21,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:46:21,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373957778] [2021-11-02 22:46:21,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:46:21,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:21,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:46:21,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:46:21,358 INFO L87 Difference]: Start difference. First operand 1061 states and 1383 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-11-02 22:46:21,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:21,610 INFO L93 Difference]: Finished difference Result 2433 states and 3189 transitions. [2021-11-02 22:46:21,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:46:21,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2021-11-02 22:46:21,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:21,619 INFO L225 Difference]: With dead ends: 2433 [2021-11-02 22:46:21,620 INFO L226 Difference]: Without dead ends: 1472 [2021-11-02 22:46:21,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:46:21,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-11-02 22:46:21,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1001. [2021-11-02 22:46:21,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 996 states have (on average 1.3062248995983936) internal successors, (1301), 1000 states have internal predecessors, (1301), 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) [2021-11-02 22:46:21,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1301 transitions. [2021-11-02 22:46:21,760 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1301 transitions. Word has length 82 [2021-11-02 22:46:21,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:21,760 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1301 transitions. [2021-11-02 22:46:21,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-11-02 22:46:21,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1301 transitions. [2021-11-02 22:46:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 22:46:21,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:21,762 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:21,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-02 22:46:21,763 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:21,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:21,763 INFO L85 PathProgramCache]: Analyzing trace with hash 916931346, now seen corresponding path program 1 times [2021-11-02 22:46:21,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:21,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182129883] [2021-11-02 22:46:21,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:21,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:21,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:21,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182129883] [2021-11-02 22:46:21,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182129883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:21,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:21,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:46:21,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181186600] [2021-11-02 22:46:21,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:46:21,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:21,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:46:21,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:46:21,883 INFO L87 Difference]: Start difference. First operand 1001 states and 1301 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2021-11-02 22:46:22,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:22,501 INFO L93 Difference]: Finished difference Result 3294 states and 4477 transitions. [2021-11-02 22:46:22,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:46:22,506 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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 84 [2021-11-02 22:46:22,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:22,529 INFO L225 Difference]: With dead ends: 3294 [2021-11-02 22:46:22,536 INFO L226 Difference]: Without dead ends: 2492 [2021-11-02 22:46:22,538 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:46:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2021-11-02 22:46:22,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 989. [2021-11-02 22:46:22,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 984 states have (on average 1.309959349593496) internal successors, (1289), 988 states have internal predecessors, (1289), 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) [2021-11-02 22:46:22,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1289 transitions. [2021-11-02 22:46:22,752 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1289 transitions. Word has length 84 [2021-11-02 22:46:22,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:22,752 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1289 transitions. [2021-11-02 22:46:22,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2021-11-02 22:46:22,753 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1289 transitions. [2021-11-02 22:46:22,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 22:46:22,754 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:22,754 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:22,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-02 22:46:22,755 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:22,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:22,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1263730727, now seen corresponding path program 1 times [2021-11-02 22:46:22,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:22,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346787743] [2021-11-02 22:46:22,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:22,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:22,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:22,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:22,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346787743] [2021-11-02 22:46:22,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346787743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:22,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:22,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:46:22,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244039291] [2021-11-02 22:46:22,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:46:22,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:22,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:46:22,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:46:22,852 INFO L87 Difference]: Start difference. First operand 989 states and 1289 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2021-11-02 22:46:23,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:23,213 INFO L93 Difference]: Finished difference Result 1777 states and 2354 transitions. [2021-11-02 22:46:23,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:46:23,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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 84 [2021-11-02 22:46:23,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:23,218 INFO L225 Difference]: With dead ends: 1777 [2021-11-02 22:46:23,218 INFO L226 Difference]: Without dead ends: 1775 [2021-11-02 22:46:23,219 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:46:23,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2021-11-02 22:46:23,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 991. [2021-11-02 22:46:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 986 states have (on average 1.3093306288032454) internal successors, (1291), 990 states have internal predecessors, (1291), 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) [2021-11-02 22:46:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1291 transitions. [2021-11-02 22:46:23,396 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1291 transitions. Word has length 84 [2021-11-02 22:46:23,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:23,397 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 1291 transitions. [2021-11-02 22:46:23,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2021-11-02 22:46:23,397 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1291 transitions. [2021-11-02 22:46:23,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 22:46:23,398 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:23,399 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:23,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-02 22:46:23,399 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:23,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:23,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1741086502, now seen corresponding path program 1 times [2021-11-02 22:46:23,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:23,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543202475] [2021-11-02 22:46:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:23,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:23,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:23,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543202475] [2021-11-02 22:46:23,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543202475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:23,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:23,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:46:23,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740674013] [2021-11-02 22:46:23,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:46:23,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:23,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:46:23,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:46:23,473 INFO L87 Difference]: Start difference. First operand 991 states and 1291 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2021-11-02 22:46:23,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:23,817 INFO L93 Difference]: Finished difference Result 2376 states and 3244 transitions. [2021-11-02 22:46:23,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:46:23,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 85 [2021-11-02 22:46:23,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:23,822 INFO L225 Difference]: With dead ends: 2376 [2021-11-02 22:46:23,822 INFO L226 Difference]: Without dead ends: 1572 [2021-11-02 22:46:23,825 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:46:23,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2021-11-02 22:46:23,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 997. [2021-11-02 22:46:23,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 992 states have (on average 1.3074596774193548) internal successors, (1297), 996 states have internal predecessors, (1297), 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) [2021-11-02 22:46:23,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1297 transitions. [2021-11-02 22:46:23,993 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1297 transitions. Word has length 85 [2021-11-02 22:46:23,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:23,994 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1297 transitions. [2021-11-02 22:46:23,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2021-11-02 22:46:23,994 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1297 transitions. [2021-11-02 22:46:23,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-02 22:46:23,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:23,998 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:46:23,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-02 22:46:23,998 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:23,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:23,999 INFO L85 PathProgramCache]: Analyzing trace with hash 53692854, now seen corresponding path program 1 times [2021-11-02 22:46:23,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:23,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964250211] [2021-11-02 22:46:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:23,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:24,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:24,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964250211] [2021-11-02 22:46:24,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964250211] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:24,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765343081] [2021-11-02 22:46:24,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:24,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:46:24,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:46:24,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:46:24,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:46:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:24,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:46:24,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:46:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:46:25,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765343081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:25,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:46:25,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2021-11-02 22:46:25,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809121538] [2021-11-02 22:46:25,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:46:25,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:25,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:46:25,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:46:25,056 INFO L87 Difference]: Start difference. First operand 997 states and 1297 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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) [2021-11-02 22:46:25,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:25,553 INFO L93 Difference]: Finished difference Result 2581 states and 3495 transitions. [2021-11-02 22:46:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:46:25,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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 135 [2021-11-02 22:46:25,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:25,557 INFO L225 Difference]: With dead ends: 2581 [2021-11-02 22:46:25,558 INFO L226 Difference]: Without dead ends: 1771 [2021-11-02 22:46:25,560 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:46:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2021-11-02 22:46:25,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 997. [2021-11-02 22:46:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 992 states have (on average 1.3064516129032258) internal successors, (1296), 996 states have internal predecessors, (1296), 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) [2021-11-02 22:46:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1296 transitions. [2021-11-02 22:46:25,743 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1296 transitions. Word has length 135 [2021-11-02 22:46:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:25,744 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1296 transitions. [2021-11-02 22:46:25,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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) [2021-11-02 22:46:25,745 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1296 transitions. [2021-11-02 22:46:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-02 22:46:25,748 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:25,749 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:46:25,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:46:25,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:46:25,963 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:25,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:25,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1818112463, now seen corresponding path program 1 times [2021-11-02 22:46:25,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:25,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891356253] [2021-11-02 22:46:25,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:25,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:26,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:26,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891356253] [2021-11-02 22:46:26,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891356253] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:26,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097085191] [2021-11-02 22:46:26,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:26,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:46:26,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:46:26,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:46:26,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:46:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:26,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 22:46:26,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:46:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:27,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097085191] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:27,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:46:27,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-02 22:46:27,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925094632] [2021-11-02 22:46:27,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 22:46:27,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:27,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 22:46:27,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:46:27,023 INFO L87 Difference]: Start difference. First operand 997 states and 1296 transitions. Second operand has 13 states, 13 states have (on average 20.923076923076923) internal successors, (272), 13 states have internal predecessors, (272), 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) [2021-11-02 22:46:38,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:38,294 INFO L93 Difference]: Finished difference Result 16639 states and 22191 transitions. [2021-11-02 22:46:38,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2021-11-02 22:46:38,297 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 20.923076923076923) internal successors, (272), 13 states have internal predecessors, (272), 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 139 [2021-11-02 22:46:38,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:38,330 INFO L225 Difference]: With dead ends: 16639 [2021-11-02 22:46:38,330 INFO L226 Difference]: Without dead ends: 15835 [2021-11-02 22:46:38,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29009 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=8289, Invalid=55467, Unknown=0, NotChecked=0, Total=63756 [2021-11-02 22:46:38,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15835 states. [2021-11-02 22:46:38,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15835 to 2706. [2021-11-02 22:46:38,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2706 states, 2701 states have (on average 1.3050721954831543) internal successors, (3525), 2705 states have internal predecessors, (3525), 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) [2021-11-02 22:46:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 3525 transitions. [2021-11-02 22:46:38,870 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 3525 transitions. Word has length 139 [2021-11-02 22:46:38,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:38,871 INFO L470 AbstractCegarLoop]: Abstraction has 2706 states and 3525 transitions. [2021-11-02 22:46:38,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 20.923076923076923) internal successors, (272), 13 states have internal predecessors, (272), 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) [2021-11-02 22:46:38,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 3525 transitions. [2021-11-02 22:46:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-02 22:46:38,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:38,878 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-02 22:46:38,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:46:39,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-02 22:46:39,094 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:39,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:39,095 INFO L85 PathProgramCache]: Analyzing trace with hash -202174165, now seen corresponding path program 1 times [2021-11-02 22:46:39,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:39,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257972102] [2021-11-02 22:46:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:39,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:39,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:39,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257972102] [2021-11-02 22:46:39,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257972102] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:39,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52301337] [2021-11-02 22:46:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:39,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:46:39,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:46:39,295 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:46:39,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:46:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:39,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 22:46:39,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:46:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 22:46:40,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52301337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:40,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:46:40,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 9 [2021-11-02 22:46:40,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485530556] [2021-11-02 22:46:40,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:46:40,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:40,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:46:40,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:46:40,028 INFO L87 Difference]: Start difference. First operand 2706 states and 3525 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2021-11-02 22:46:40,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:40,969 INFO L93 Difference]: Finished difference Result 7240 states and 9818 transitions. [2021-11-02 22:46:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:46:40,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 140 [2021-11-02 22:46:40,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:40,980 INFO L225 Difference]: With dead ends: 7240 [2021-11-02 22:46:40,980 INFO L226 Difference]: Without dead ends: 4761 [2021-11-02 22:46:40,984 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 142 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:46:40,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4761 states. [2021-11-02 22:46:41,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4761 to 2363. [2021-11-02 22:46:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2358 states have (on average 1.3078880407124682) internal successors, (3084), 2362 states have internal predecessors, (3084), 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) [2021-11-02 22:46:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3084 transitions. [2021-11-02 22:46:41,438 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3084 transitions. Word has length 140 [2021-11-02 22:46:41,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:41,438 INFO L470 AbstractCegarLoop]: Abstraction has 2363 states and 3084 transitions. [2021-11-02 22:46:41,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2021-11-02 22:46:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3084 transitions. [2021-11-02 22:46:41,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-02 22:46:41,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:41,447 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:46:41,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:46:41,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-02 22:46:41,662 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:41,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash 328556361, now seen corresponding path program 1 times [2021-11-02 22:46:41,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:41,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829619443] [2021-11-02 22:46:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:41,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:41,813 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-02 22:46:41,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:41,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829619443] [2021-11-02 22:46:41,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829619443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:41,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:41,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:46:41,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472788811] [2021-11-02 22:46:41,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:46:41,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:41,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:46:41,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:46:41,816 INFO L87 Difference]: Start difference. First operand 2363 states and 3084 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 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) [2021-11-02 22:46:44,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:44,188 INFO L93 Difference]: Finished difference Result 13973 states and 18760 transitions. [2021-11-02 22:46:44,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 22:46:44,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 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 141 [2021-11-02 22:46:44,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:44,209 INFO L225 Difference]: With dead ends: 13973 [2021-11-02 22:46:44,210 INFO L226 Difference]: Without dead ends: 11877 [2021-11-02 22:46:44,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-02 22:46:44,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11877 states. [2021-11-02 22:46:44,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11877 to 2819. [2021-11-02 22:46:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2814 states have (on average 1.2842928216062544) internal successors, (3614), 2818 states have internal predecessors, (3614), 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) [2021-11-02 22:46:44,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 3614 transitions. [2021-11-02 22:46:44,807 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 3614 transitions. Word has length 141 [2021-11-02 22:46:44,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:44,807 INFO L470 AbstractCegarLoop]: Abstraction has 2819 states and 3614 transitions. [2021-11-02 22:46:44,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 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) [2021-11-02 22:46:44,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 3614 transitions. [2021-11-02 22:46:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-02 22:46:44,816 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:44,816 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:46:44,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-02 22:46:44,817 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:44,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:44,817 INFO L85 PathProgramCache]: Analyzing trace with hash 76678734, now seen corresponding path program 1 times [2021-11-02 22:46:44,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:44,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948995226] [2021-11-02 22:46:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:44,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:45,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:45,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948995226] [2021-11-02 22:46:45,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948995226] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:45,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628107008] [2021-11-02 22:46:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:45,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:46:45,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:46:45,010 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:46:45,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:46:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:45,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 22:46:45,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:46:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-02 22:46:45,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628107008] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:45,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:46:45,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-11-02 22:46:45,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118440471] [2021-11-02 22:46:45,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:46:45,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:45,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:46:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:46:45,953 INFO L87 Difference]: Start difference. First operand 2819 states and 3614 transitions. Second operand has 11 states, 11 states have (on average 22.363636363636363) internal successors, (246), 11 states have internal predecessors, (246), 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) [2021-11-02 22:46:48,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:48,449 INFO L93 Difference]: Finished difference Result 8026 states and 10464 transitions. [2021-11-02 22:46:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-02 22:46:48,449 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.363636363636363) internal successors, (246), 11 states have internal predecessors, (246), 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 143 [2021-11-02 22:46:48,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:48,462 INFO L225 Difference]: With dead ends: 8026 [2021-11-02 22:46:48,462 INFO L226 Difference]: Without dead ends: 5271 [2021-11-02 22:46:48,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=525, Invalid=1545, Unknown=0, NotChecked=0, Total=2070 [2021-11-02 22:46:48,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5271 states. [2021-11-02 22:46:48,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5271 to 2343. [2021-11-02 22:46:48,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 2338 states have (on average 1.2857142857142858) internal successors, (3006), 2342 states have internal predecessors, (3006), 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) [2021-11-02 22:46:48,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 3006 transitions. [2021-11-02 22:46:48,940 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 3006 transitions. Word has length 143 [2021-11-02 22:46:48,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:48,940 INFO L470 AbstractCegarLoop]: Abstraction has 2343 states and 3006 transitions. [2021-11-02 22:46:48,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.363636363636363) internal successors, (246), 11 states have internal predecessors, (246), 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) [2021-11-02 22:46:48,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 3006 transitions. [2021-11-02 22:46:48,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-02 22:46:48,944 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:48,944 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 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] [2021-11-02 22:46:48,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:46:49,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-02 22:46:49,145 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:49,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:49,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1720993890, now seen corresponding path program 1 times [2021-11-02 22:46:49,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:49,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274808634] [2021-11-02 22:46:49,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:49,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:49,340 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:49,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:49,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274808634] [2021-11-02 22:46:49,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274808634] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:49,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131308431] [2021-11-02 22:46:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:49,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:46:49,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:46:49,346 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:46:49,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:46:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:49,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 22:46:49,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:46:50,831 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:50,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131308431] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:50,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:46:50,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 15 [2021-11-02 22:46:50,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762233638] [2021-11-02 22:46:50,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 22:46:50,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:50,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 22:46:50,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:46:50,833 INFO L87 Difference]: Start difference. First operand 2343 states and 3006 transitions. Second operand has 16 states, 16 states have (on average 12.9375) internal successors, (207), 15 states have internal predecessors, (207), 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) [2021-11-02 22:46:52,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:52,542 INFO L93 Difference]: Finished difference Result 6458 states and 8318 transitions. [2021-11-02 22:46:52,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:46:52,543 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.9375) internal successors, (207), 15 states have internal predecessors, (207), 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 143 [2021-11-02 22:46:52,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:52,550 INFO L225 Difference]: With dead ends: 6458 [2021-11-02 22:46:52,550 INFO L226 Difference]: Without dead ends: 4330 [2021-11-02 22:46:52,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=267, Invalid=1065, Unknown=0, NotChecked=0, Total=1332 [2021-11-02 22:46:52,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4330 states. [2021-11-02 22:46:53,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4330 to 2601. [2021-11-02 22:46:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 2596 states have (on average 1.2827426810477658) internal successors, (3330), 2600 states have internal predecessors, (3330), 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) [2021-11-02 22:46:53,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3330 transitions. [2021-11-02 22:46:53,233 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3330 transitions. Word has length 143 [2021-11-02 22:46:53,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:53,235 INFO L470 AbstractCegarLoop]: Abstraction has 2601 states and 3330 transitions. [2021-11-02 22:46:53,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.9375) internal successors, (207), 15 states have internal predecessors, (207), 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) [2021-11-02 22:46:53,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3330 transitions. [2021-11-02 22:46:53,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-02 22:46:53,242 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:53,243 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 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] [2021-11-02 22:46:53,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:46:53,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-02 22:46:53,467 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:53,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:53,467 INFO L85 PathProgramCache]: Analyzing trace with hash 442622684, now seen corresponding path program 1 times [2021-11-02 22:46:53,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:53,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211423986] [2021-11-02 22:46:53,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:53,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-02 22:46:53,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:53,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211423986] [2021-11-02 22:46:53,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211423986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:53,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:53,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:46:53,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406083702] [2021-11-02 22:46:53,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:46:53,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:53,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:46:53,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:46:53,596 INFO L87 Difference]: Start difference. First operand 2601 states and 3330 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-11-02 22:46:54,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:54,039 INFO L93 Difference]: Finished difference Result 4908 states and 6331 transitions. [2021-11-02 22:46:54,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:46:54,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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 143 [2021-11-02 22:46:54,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:54,043 INFO L225 Difference]: With dead ends: 4908 [2021-11-02 22:46:54,043 INFO L226 Difference]: Without dead ends: 2461 [2021-11-02 22:46:54,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:46:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2021-11-02 22:46:54,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2461. [2021-11-02 22:46:54,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 2456 states have (on average 1.2837947882736156) internal successors, (3153), 2460 states have internal predecessors, (3153), 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) [2021-11-02 22:46:54,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 3153 transitions. [2021-11-02 22:46:54,636 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 3153 transitions. Word has length 143 [2021-11-02 22:46:54,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:54,636 INFO L470 AbstractCegarLoop]: Abstraction has 2461 states and 3153 transitions. [2021-11-02 22:46:54,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-11-02 22:46:54,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 3153 transitions. [2021-11-02 22:46:54,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-02 22:46:54,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:54,644 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:46:54,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-02 22:46:54,644 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:54,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:54,646 INFO L85 PathProgramCache]: Analyzing trace with hash 296470726, now seen corresponding path program 1 times [2021-11-02 22:46:54,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:54,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112953724] [2021-11-02 22:46:54,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:54,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:54,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:54,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112953724] [2021-11-02 22:46:54,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112953724] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:54,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229721187] [2021-11-02 22:46:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:54,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:46:54,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:46:54,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:46:54,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:46:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:55,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-02 22:46:55,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:46:56,439 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:56,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229721187] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:56,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:46:56,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 15 [2021-11-02 22:46:56,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291192902] [2021-11-02 22:46:56,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 22:46:56,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:56,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 22:46:56,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:46:56,442 INFO L87 Difference]: Start difference. First operand 2461 states and 3153 transitions. Second operand has 16 states, 16 states have (on average 13.375) internal successors, (214), 15 states have internal predecessors, (214), 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) [2021-11-02 22:46:58,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:58,493 INFO L93 Difference]: Finished difference Result 6722 states and 8630 transitions. [2021-11-02 22:46:58,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 22:46:58,494 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.375) internal successors, (214), 15 states have internal predecessors, (214), 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 144 [2021-11-02 22:46:58,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:58,501 INFO L225 Difference]: With dead ends: 6722 [2021-11-02 22:46:58,501 INFO L226 Difference]: Without dead ends: 4476 [2021-11-02 22:46:58,506 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=1453, Unknown=0, NotChecked=0, Total=1806 [2021-11-02 22:46:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2021-11-02 22:46:59,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 2740. [2021-11-02 22:46:59,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2740 states, 2735 states have (on average 1.280073126142596) internal successors, (3501), 2739 states have internal predecessors, (3501), 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) [2021-11-02 22:46:59,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 3501 transitions. [2021-11-02 22:46:59,097 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 3501 transitions. Word has length 144 [2021-11-02 22:46:59,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:59,097 INFO L470 AbstractCegarLoop]: Abstraction has 2740 states and 3501 transitions. [2021-11-02 22:46:59,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.375) internal successors, (214), 15 states have internal predecessors, (214), 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) [2021-11-02 22:46:59,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 3501 transitions. [2021-11-02 22:46:59,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-02 22:46:59,105 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:59,105 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:46:59,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:46:59,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-02 22:46:59,318 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:46:59,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:59,319 INFO L85 PathProgramCache]: Analyzing trace with hash -742113848, now seen corresponding path program 1 times [2021-11-02 22:46:59,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:59,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701755678] [2021-11-02 22:46:59,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:59,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:59,383 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-02 22:46:59,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:59,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701755678] [2021-11-02 22:46:59,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701755678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:59,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:59,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:46:59,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725276774] [2021-11-02 22:46:59,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:46:59,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:59,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:46:59,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:46:59,388 INFO L87 Difference]: Start difference. First operand 2740 states and 3501 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2021-11-02 22:46:59,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:59,888 INFO L93 Difference]: Finished difference Result 5111 states and 6573 transitions. [2021-11-02 22:46:59,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:46:59,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 144 [2021-11-02 22:46:59,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:59,891 INFO L225 Difference]: With dead ends: 5111 [2021-11-02 22:46:59,891 INFO L226 Difference]: Without dead ends: 2527 [2021-11-02 22:46:59,893 INFO L786 BasicCegarLoop]: 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 [2021-11-02 22:46:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2021-11-02 22:47:00,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2515. [2021-11-02 22:47:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2515 states, 2510 states have (on average 1.2752988047808764) internal successors, (3201), 2514 states have internal predecessors, (3201), 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) [2021-11-02 22:47:00,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 3201 transitions. [2021-11-02 22:47:00,367 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 3201 transitions. Word has length 144 [2021-11-02 22:47:00,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:00,368 INFO L470 AbstractCegarLoop]: Abstraction has 2515 states and 3201 transitions. [2021-11-02 22:47:00,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2021-11-02 22:47:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 3201 transitions. [2021-11-02 22:47:00,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-02 22:47:00,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:00,374 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:47:00,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-02 22:47:00,375 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:47:00,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:00,375 INFO L85 PathProgramCache]: Analyzing trace with hash -238390573, now seen corresponding path program 1 times [2021-11-02 22:47:00,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:00,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663765027] [2021-11-02 22:47:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:00,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:00,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:00,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663765027] [2021-11-02 22:47:00,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663765027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:00,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:00,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 22:47:00,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219674763] [2021-11-02 22:47:00,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:47:00,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:00,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:47:00,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:47:00,585 INFO L87 Difference]: Start difference. First operand 2515 states and 3201 transitions. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 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) [2021-11-02 22:47:02,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:02,038 INFO L93 Difference]: Finished difference Result 6630 states and 8512 transitions. [2021-11-02 22:47:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 22:47:02,039 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 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 144 [2021-11-02 22:47:02,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:02,042 INFO L225 Difference]: With dead ends: 6630 [2021-11-02 22:47:02,042 INFO L226 Difference]: Without dead ends: 4330 [2021-11-02 22:47:02,045 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-11-02 22:47:02,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4330 states. [2021-11-02 22:47:02,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4330 to 2850. [2021-11-02 22:47:02,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2845 states have (on average 1.2738137082601055) internal successors, (3624), 2849 states have internal predecessors, (3624), 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) [2021-11-02 22:47:02,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 3624 transitions. [2021-11-02 22:47:02,522 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 3624 transitions. Word has length 144 [2021-11-02 22:47:02,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:02,522 INFO L470 AbstractCegarLoop]: Abstraction has 2850 states and 3624 transitions. [2021-11-02 22:47:02,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 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) [2021-11-02 22:47:02,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 3624 transitions. [2021-11-02 22:47:02,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-02 22:47:02,528 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:02,529 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:47:02,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-02 22:47:02,529 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:47:02,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:02,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1520562859, now seen corresponding path program 1 times [2021-11-02 22:47:02,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:02,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439926167] [2021-11-02 22:47:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:02,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-02 22:47:02,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:02,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439926167] [2021-11-02 22:47:02,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439926167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:02,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:02,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:47:02,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280819586] [2021-11-02 22:47:02,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:47:02,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:02,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:47:02,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:47:02,637 INFO L87 Difference]: Start difference. First operand 2850 states and 3624 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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) [2021-11-02 22:47:03,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:03,207 INFO L93 Difference]: Finished difference Result 5326 states and 6811 transitions. [2021-11-02 22:47:03,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:47:03,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 144 [2021-11-02 22:47:03,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:03,211 INFO L225 Difference]: With dead ends: 5326 [2021-11-02 22:47:03,211 INFO L226 Difference]: Without dead ends: 2633 [2021-11-02 22:47:03,214 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:47:03,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2021-11-02 22:47:03,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2633. [2021-11-02 22:47:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2628 states have (on average 1.2751141552511416) internal successors, (3351), 2632 states have internal predecessors, (3351), 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) [2021-11-02 22:47:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3351 transitions. [2021-11-02 22:47:03,720 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3351 transitions. Word has length 144 [2021-11-02 22:47:03,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:03,720 INFO L470 AbstractCegarLoop]: Abstraction has 2633 states and 3351 transitions. [2021-11-02 22:47:03,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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) [2021-11-02 22:47:03,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3351 transitions. [2021-11-02 22:47:03,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-02 22:47:03,725 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:03,725 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 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] [2021-11-02 22:47:03,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-02 22:47:03,726 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:47:03,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:03,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1712108579, now seen corresponding path program 1 times [2021-11-02 22:47:03,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:03,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620525400] [2021-11-02 22:47:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:03,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:03,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:03,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620525400] [2021-11-02 22:47:03,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620525400] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:03,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336026483] [2021-11-02 22:47:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:03,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:03,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:03,997 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:47:04,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 22:47:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:04,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 22:47:04,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:06,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336026483] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:06,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:47:06,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-11-02 22:47:06,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846230703] [2021-11-02 22:47:06,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:47:06,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:06,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:47:06,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:47:06,134 INFO L87 Difference]: Start difference. First operand 2633 states and 3351 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 9 states have internal predecessors, (236), 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) [2021-11-02 22:47:07,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:07,613 INFO L93 Difference]: Finished difference Result 7269 states and 9259 transitions. [2021-11-02 22:47:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 22:47:07,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 9 states have internal predecessors, (236), 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 145 [2021-11-02 22:47:07,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:07,618 INFO L225 Difference]: With dead ends: 7269 [2021-11-02 22:47:07,618 INFO L226 Difference]: Without dead ends: 4851 [2021-11-02 22:47:07,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 139 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:47:07,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2021-11-02 22:47:08,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 2644. [2021-11-02 22:47:08,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 2639 states have (on average 1.2739674118984463) internal successors, (3362), 2643 states have internal predecessors, (3362), 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) [2021-11-02 22:47:08,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3362 transitions. [2021-11-02 22:47:08,124 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3362 transitions. Word has length 145 [2021-11-02 22:47:08,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:08,125 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 3362 transitions. [2021-11-02 22:47:08,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 9 states have internal predecessors, (236), 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) [2021-11-02 22:47:08,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3362 transitions. [2021-11-02 22:47:08,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-02 22:47:08,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:08,130 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:47:08,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:08,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:08,358 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:47:08,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:08,359 INFO L85 PathProgramCache]: Analyzing trace with hash -911347769, now seen corresponding path program 1 times [2021-11-02 22:47:08,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:08,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599872285] [2021-11-02 22:47:08,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:08,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:08,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:08,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599872285] [2021-11-02 22:47:08,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599872285] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:08,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897282814] [2021-11-02 22:47:08,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:08,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:08,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:08,583 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:47:08,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 22:47:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:09,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:47:09,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 22:47:09,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897282814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:09,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:47:09,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-11-02 22:47:09,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251873078] [2021-11-02 22:47:09,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:47:09,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:09,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:47:09,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:47:09,731 INFO L87 Difference]: Start difference. First operand 2644 states and 3362 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2021-11-02 22:47:11,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:11,137 INFO L93 Difference]: Finished difference Result 8626 states and 11243 transitions. [2021-11-02 22:47:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:47:11,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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 145 [2021-11-02 22:47:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:11,145 INFO L225 Difference]: With dead ends: 8626 [2021-11-02 22:47:11,145 INFO L226 Difference]: Without dead ends: 6157 [2021-11-02 22:47:11,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-11-02 22:47:11,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2021-11-02 22:47:11,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 2644. [2021-11-02 22:47:11,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 2639 states have (on average 1.273209549071618) internal successors, (3360), 2643 states have internal predecessors, (3360), 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) [2021-11-02 22:47:11,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3360 transitions. [2021-11-02 22:47:11,680 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3360 transitions. Word has length 145 [2021-11-02 22:47:11,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:11,681 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 3360 transitions. [2021-11-02 22:47:11,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2021-11-02 22:47:11,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3360 transitions. [2021-11-02 22:47:11,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-02 22:47:11,684 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:11,685 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2021-11-02 22:47:11,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:11,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:11,885 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:47:11,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:11,886 INFO L85 PathProgramCache]: Analyzing trace with hash -547307946, now seen corresponding path program 1 times [2021-11-02 22:47:11,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:11,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996363254] [2021-11-02 22:47:11,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:11,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:12,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:12,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996363254] [2021-11-02 22:47:12,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996363254] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:12,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404061040] [2021-11-02 22:47:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:12,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:12,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:12,090 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:47:12,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 22:47:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:12,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-02 22:47:12,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:13,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404061040] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:13,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:47:13,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2021-11-02 22:47:13,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101885121] [2021-11-02 22:47:13,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:47:13,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:13,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:47:13,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:47:13,202 INFO L87 Difference]: Start difference. First operand 2644 states and 3360 transitions. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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) [2021-11-02 22:47:14,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:14,931 INFO L93 Difference]: Finished difference Result 10060 states and 12825 transitions. [2021-11-02 22:47:14,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 22:47:14,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 146 [2021-11-02 22:47:14,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:14,940 INFO L225 Difference]: With dead ends: 10060 [2021-11-02 22:47:14,941 INFO L226 Difference]: Without dead ends: 7631 [2021-11-02 22:47:14,944 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:47:14,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7631 states. [2021-11-02 22:47:15,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7631 to 4003. [2021-11-02 22:47:15,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4003 states, 3998 states have (on average 1.274887443721861) internal successors, (5097), 4002 states have internal predecessors, (5097), 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) [2021-11-02 22:47:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4003 states to 4003 states and 5097 transitions. [2021-11-02 22:47:15,766 INFO L78 Accepts]: Start accepts. Automaton has 4003 states and 5097 transitions. Word has length 146 [2021-11-02 22:47:15,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:15,767 INFO L470 AbstractCegarLoop]: Abstraction has 4003 states and 5097 transitions. [2021-11-02 22:47:15,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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) [2021-11-02 22:47:15,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4003 states and 5097 transitions. [2021-11-02 22:47:15,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-02 22:47:15,773 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:15,773 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2021-11-02 22:47:15,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:15,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:15,974 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:47:15,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:15,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1585892520, now seen corresponding path program 1 times [2021-11-02 22:47:15,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:15,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135317634] [2021-11-02 22:47:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:15,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-02 22:47:16,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:16,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135317634] [2021-11-02 22:47:16,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135317634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:16,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:16,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:47:16,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100267] [2021-11-02 22:47:16,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:47:16,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:16,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:47:16,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:47:16,043 INFO L87 Difference]: Start difference. First operand 4003 states and 5097 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2021-11-02 22:47:17,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:17,154 INFO L93 Difference]: Finished difference Result 6987 states and 8976 transitions. [2021-11-02 22:47:17,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:47:17,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 146 [2021-11-02 22:47:17,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:17,184 INFO L225 Difference]: With dead ends: 6987 [2021-11-02 22:47:17,184 INFO L226 Difference]: Without dead ends: 3199 [2021-11-02 22:47:17,189 INFO L786 BasicCegarLoop]: 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 [2021-11-02 22:47:17,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2021-11-02 22:47:17,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3180. [2021-11-02 22:47:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3180 states, 3175 states have (on average 1.2746456692913386) internal successors, (4047), 3179 states have internal predecessors, (4047), 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) [2021-11-02 22:47:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 4047 transitions. [2021-11-02 22:47:17,964 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 4047 transitions. Word has length 146 [2021-11-02 22:47:17,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:17,964 INFO L470 AbstractCegarLoop]: Abstraction has 3180 states and 4047 transitions. [2021-11-02 22:47:17,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2021-11-02 22:47:17,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 4047 transitions. [2021-11-02 22:47:17,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-02 22:47:17,969 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:17,969 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:47:17,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-02 22:47:17,970 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:47:17,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:17,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1555711294, now seen corresponding path program 1 times [2021-11-02 22:47:17,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:17,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724663559] [2021-11-02 22:47:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:17,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:18,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:18,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724663559] [2021-11-02 22:47:18,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724663559] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:18,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609491437] [2021-11-02 22:47:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:18,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:18,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:18,158 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:47:18,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 22:47:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:18,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 22:47:18,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:19,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609491437] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:19,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:47:19,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2021-11-02 22:47:19,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709718205] [2021-11-02 22:47:19,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 22:47:19,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:19,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 22:47:19,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:47:19,371 INFO L87 Difference]: Start difference. First operand 3180 states and 4047 transitions. Second operand has 15 states, 15 states have (on average 17.6) internal successors, (264), 15 states have internal predecessors, (264), 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) [2021-11-02 22:47:28,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:28,676 INFO L93 Difference]: Finished difference Result 18839 states and 24337 transitions. [2021-11-02 22:47:28,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2021-11-02 22:47:28,677 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 17.6) internal successors, (264), 15 states have internal predecessors, (264), 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 148 [2021-11-02 22:47:28,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:28,690 INFO L225 Difference]: With dead ends: 18839 [2021-11-02 22:47:28,690 INFO L226 Difference]: Without dead ends: 15874 [2021-11-02 22:47:28,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12819 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4607, Invalid=26899, Unknown=0, NotChecked=0, Total=31506 [2021-11-02 22:47:28,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15874 states. [2021-11-02 22:47:29,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15874 to 3059. [2021-11-02 22:47:29,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3059 states, 3054 states have (on average 1.2567125081859856) internal successors, (3838), 3058 states have internal predecessors, (3838), 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) [2021-11-02 22:47:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 3838 transitions. [2021-11-02 22:47:29,392 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 3838 transitions. Word has length 148 [2021-11-02 22:47:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:29,392 INFO L470 AbstractCegarLoop]: Abstraction has 3059 states and 3838 transitions. [2021-11-02 22:47:29,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.6) internal successors, (264), 15 states have internal predecessors, (264), 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) [2021-11-02 22:47:29,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 3838 transitions. [2021-11-02 22:47:29,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-02 22:47:29,396 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:29,396 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-02 22:47:29,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:29,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:29,596 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:47:29,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:29,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1914409723, now seen corresponding path program 1 times [2021-11-02 22:47:29,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:29,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280749510] [2021-11-02 22:47:29,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:29,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 22:47:29,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:29,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280749510] [2021-11-02 22:47:29,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280749510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:29,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:29,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:47:29,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174774969] [2021-11-02 22:47:29,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:47:29,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:29,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:47:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:47:29,740 INFO L87 Difference]: Start difference. First operand 3059 states and 3838 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2021-11-02 22:47:31,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:31,944 INFO L93 Difference]: Finished difference Result 10329 states and 13281 transitions. [2021-11-02 22:47:31,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:47:31,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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 150 [2021-11-02 22:47:31,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:31,953 INFO L225 Difference]: With dead ends: 10329 [2021-11-02 22:47:31,953 INFO L226 Difference]: Without dead ends: 7553 [2021-11-02 22:47:31,957 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:47:31,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7553 states. [2021-11-02 22:47:32,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7553 to 3140. [2021-11-02 22:47:32,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3140 states, 3135 states have (on average 1.2548644338118022) internal successors, (3934), 3139 states have internal predecessors, (3934), 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) [2021-11-02 22:47:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 3934 transitions. [2021-11-02 22:47:32,637 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 3934 transitions. Word has length 150 [2021-11-02 22:47:32,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:32,638 INFO L470 AbstractCegarLoop]: Abstraction has 3140 states and 3934 transitions. [2021-11-02 22:47:32,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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) [2021-11-02 22:47:32,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 3934 transitions. [2021-11-02 22:47:32,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-02 22:47:32,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:32,641 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:47:32,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-02 22:47:32,642 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:47:32,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:32,642 INFO L85 PathProgramCache]: Analyzing trace with hash -2103246866, now seen corresponding path program 1 times [2021-11-02 22:47:32,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:32,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297950103] [2021-11-02 22:47:32,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:32,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:32,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:32,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297950103] [2021-11-02 22:47:32,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297950103] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:32,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917121822] [2021-11-02 22:47:32,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:32,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:32,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:32,822 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:47:32,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-02 22:47:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:33,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 22:47:33,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:34,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917121822] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:34,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:47:34,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2021-11-02 22:47:34,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807488620] [2021-11-02 22:47:34,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:47:34,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:34,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:47:34,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:47:34,190 INFO L87 Difference]: Start difference. First operand 3140 states and 3934 transitions. Second operand has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 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) [2021-11-02 22:47:36,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:36,050 INFO L93 Difference]: Finished difference Result 9217 states and 11812 transitions. [2021-11-02 22:47:36,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 22:47:36,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-02 22:47:36,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:36,057 INFO L225 Difference]: With dead ends: 9217 [2021-11-02 22:47:36,057 INFO L226 Difference]: Without dead ends: 6360 [2021-11-02 22:47:36,061 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:47:36,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2021-11-02 22:47:36,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 3140. [2021-11-02 22:47:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3140 states, 3135 states have (on average 1.245933014354067) internal successors, (3906), 3139 states have internal predecessors, (3906), 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) [2021-11-02 22:47:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 3906 transitions. [2021-11-02 22:47:36,934 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 3906 transitions. Word has length 151 [2021-11-02 22:47:36,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:36,935 INFO L470 AbstractCegarLoop]: Abstraction has 3140 states and 3906 transitions. [2021-11-02 22:47:36,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 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) [2021-11-02 22:47:36,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 3906 transitions. [2021-11-02 22:47:36,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-02 22:47:36,941 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:36,941 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:47:36,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-02 22:47:37,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-02 22:47:37,166 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:47:37,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:37,167 INFO L85 PathProgramCache]: Analyzing trace with hash 455514027, now seen corresponding path program 1 times [2021-11-02 22:47:37,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:37,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584647213] [2021-11-02 22:47:37,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:37,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-02 22:47:37,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:37,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584647213] [2021-11-02 22:47:37,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584647213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:37,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:37,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:47:37,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401865251] [2021-11-02 22:47:37,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:47:37,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:37,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:47:37,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:47:37,279 INFO L87 Difference]: Start difference. First operand 3140 states and 3906 transitions. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2021-11-02 22:47:40,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:40,234 INFO L93 Difference]: Finished difference Result 14485 states and 18520 transitions. [2021-11-02 22:47:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 22:47:40,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-02 22:47:40,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:40,247 INFO L225 Difference]: With dead ends: 14485 [2021-11-02 22:47:40,247 INFO L226 Difference]: Without dead ends: 11628 [2021-11-02 22:47:40,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:47:40,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11628 states. [2021-11-02 22:47:41,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11628 to 3609. [2021-11-02 22:47:41,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3604 states have (on average 1.2322419533851277) internal successors, (4441), 3608 states have internal predecessors, (4441), 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) [2021-11-02 22:47:41,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 4441 transitions. [2021-11-02 22:47:41,124 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 4441 transitions. Word has length 151 [2021-11-02 22:47:41,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:41,125 INFO L470 AbstractCegarLoop]: Abstraction has 3609 states and 4441 transitions. [2021-11-02 22:47:41,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2021-11-02 22:47:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 4441 transitions. [2021-11-02 22:47:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-02 22:47:41,128 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:41,129 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:47:41,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-02 22:47:41,129 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:47:41,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:41,129 INFO L85 PathProgramCache]: Analyzing trace with hash 566846588, now seen corresponding path program 1 times [2021-11-02 22:47:41,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:41,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234702098] [2021-11-02 22:47:41,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:41,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-02 22:47:41,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:41,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234702098] [2021-11-02 22:47:41,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234702098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:41,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:41,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:47:41,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491194316] [2021-11-02 22:47:41,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:47:41,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:41,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:47:41,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:47:41,212 INFO L87 Difference]: Start difference. First operand 3609 states and 4441 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2021-11-02 22:47:42,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:42,460 INFO L93 Difference]: Finished difference Result 8739 states and 10893 transitions. [2021-11-02 22:47:42,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:47:42,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 152 [2021-11-02 22:47:42,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:42,466 INFO L225 Difference]: With dead ends: 8739 [2021-11-02 22:47:42,466 INFO L226 Difference]: Without dead ends: 5413 [2021-11-02 22:47:42,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:47:42,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5413 states. [2021-11-02 22:47:43,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5413 to 4313. [2021-11-02 22:47:43,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4313 states, 4308 states have (on average 1.2298050139275767) internal successors, (5298), 4312 states have internal predecessors, (5298), 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) [2021-11-02 22:47:43,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4313 states to 4313 states and 5298 transitions. [2021-11-02 22:47:43,413 INFO L78 Accepts]: Start accepts. Automaton has 4313 states and 5298 transitions. Word has length 152 [2021-11-02 22:47:43,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:43,413 INFO L470 AbstractCegarLoop]: Abstraction has 4313 states and 5298 transitions. [2021-11-02 22:47:43,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2021-11-02 22:47:43,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4313 states and 5298 transitions. [2021-11-02 22:47:43,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-02 22:47:43,417 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:43,417 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:47:43,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-02 22:47:43,418 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:47:43,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:43,418 INFO L85 PathProgramCache]: Analyzing trace with hash 322051501, now seen corresponding path program 1 times [2021-11-02 22:47:43,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:43,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243575853] [2021-11-02 22:47:43,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:43,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:43,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:43,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243575853] [2021-11-02 22:47:43,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243575853] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:43,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903342899] [2021-11-02 22:47:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:43,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:43,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:43,534 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:47:43,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-02 22:47:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:44,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:47:44,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:44,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903342899] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:44,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:47:44,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-11-02 22:47:44,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716307304] [2021-11-02 22:47:44,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:47:44,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:44,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:47:44,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:47:44,776 INFO L87 Difference]: Start difference. First operand 4313 states and 5298 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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) [2021-11-02 22:47:47,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:47,385 INFO L93 Difference]: Finished difference Result 15041 states and 19000 transitions. [2021-11-02 22:47:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 22:47:47,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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 152 [2021-11-02 22:47:47,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:47,398 INFO L225 Difference]: With dead ends: 15041 [2021-11-02 22:47:47,398 INFO L226 Difference]: Without dead ends: 11011 [2021-11-02 22:47:47,402 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:47:47,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11011 states. [2021-11-02 22:47:48,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11011 to 6777. [2021-11-02 22:47:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6777 states, 6772 states have (on average 1.2331659775546366) internal successors, (8351), 6776 states have internal predecessors, (8351), 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) [2021-11-02 22:47:48,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6777 states to 6777 states and 8351 transitions. [2021-11-02 22:47:48,971 INFO L78 Accepts]: Start accepts. Automaton has 6777 states and 8351 transitions. Word has length 152 [2021-11-02 22:47:48,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:48,971 INFO L470 AbstractCegarLoop]: Abstraction has 6777 states and 8351 transitions. [2021-11-02 22:47:48,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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) [2021-11-02 22:47:48,972 INFO L276 IsEmpty]: Start isEmpty. Operand 6777 states and 8351 transitions. [2021-11-02 22:47:48,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-02 22:47:48,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:48,977 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:47:49,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:49,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-02 22:47:49,178 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:47:49,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:49,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1281823144, now seen corresponding path program 1 times [2021-11-02 22:47:49,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:49,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087930644] [2021-11-02 22:47:49,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:49,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 45 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:49,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:49,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087930644] [2021-11-02 22:47:49,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087930644] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:49,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644308674] [2021-11-02 22:47:49,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:49,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:49,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:49,401 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:47:49,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-02 22:47:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:50,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-02 22:47:50,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:50,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644308674] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:50,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:47:50,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2021-11-02 22:47:50,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56833531] [2021-11-02 22:47:50,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 22:47:50,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:50,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 22:47:50,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:47:50,667 INFO L87 Difference]: Start difference. First operand 6777 states and 8351 transitions. Second operand has 17 states, 17 states have (on average 16.058823529411764) internal successors, (273), 17 states have internal predecessors, (273), 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) [2021-11-02 22:48:03,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:03,179 INFO L93 Difference]: Finished difference Result 26939 states and 33601 transitions. [2021-11-02 22:48:03,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2021-11-02 22:48:03,180 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.058823529411764) internal successors, (273), 17 states have internal predecessors, (273), 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 152 [2021-11-02 22:48:03,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:03,205 INFO L225 Difference]: With dead ends: 26939 [2021-11-02 22:48:03,205 INFO L226 Difference]: Without dead ends: 21507 [2021-11-02 22:48:03,213 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11740 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4205, Invalid=25207, Unknown=0, NotChecked=0, Total=29412 [2021-11-02 22:48:03,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21507 states. [2021-11-02 22:48:06,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21507 to 9797. [2021-11-02 22:48:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9797 states, 9792 states have (on average 1.2345792483660132) internal successors, (12089), 9796 states have internal predecessors, (12089), 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) [2021-11-02 22:48:06,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9797 states to 9797 states and 12089 transitions. [2021-11-02 22:48:06,158 INFO L78 Accepts]: Start accepts. Automaton has 9797 states and 12089 transitions. Word has length 152 [2021-11-02 22:48:06,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:06,158 INFO L470 AbstractCegarLoop]: Abstraction has 9797 states and 12089 transitions. [2021-11-02 22:48:06,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.058823529411764) internal successors, (273), 17 states have internal predecessors, (273), 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) [2021-11-02 22:48:06,159 INFO L276 IsEmpty]: Start isEmpty. Operand 9797 states and 12089 transitions. [2021-11-02 22:48:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-02 22:48:06,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:06,165 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:48:06,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:06,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:06,366 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:48:06,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:06,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1008679096, now seen corresponding path program 1 times [2021-11-02 22:48:06,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:06,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722002905] [2021-11-02 22:48:06,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:06,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:06,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:06,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722002905] [2021-11-02 22:48:06,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722002905] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:06,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234875482] [2021-11-02 22:48:06,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:06,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:06,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:48:06,624 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:48:06,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-02 22:48:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:07,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 22:48:07,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:08,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234875482] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:08,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:48:08,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-11-02 22:48:08,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117602462] [2021-11-02 22:48:08,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:48:08,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:08,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:48:08,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:48:08,864 INFO L87 Difference]: Start difference. First operand 9797 states and 12089 transitions. Second operand has 10 states, 10 states have (on average 23.4) internal successors, (234), 9 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:12,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:12,722 INFO L93 Difference]: Finished difference Result 18929 states and 23615 transitions. [2021-11-02 22:48:12,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 22:48:12,722 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.4) internal successors, (234), 9 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-11-02 22:48:12,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:12,735 INFO L225 Difference]: With dead ends: 18929 [2021-11-02 22:48:12,735 INFO L226 Difference]: Without dead ends: 12114 [2021-11-02 22:48:12,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 147 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:48:12,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12114 states. [2021-11-02 22:48:15,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12114 to 9553. [2021-11-02 22:48:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9553 states, 9548 states have (on average 1.2327188940092166) internal successors, (11770), 9552 states have internal predecessors, (11770), 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) [2021-11-02 22:48:15,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9553 states to 9553 states and 11770 transitions. [2021-11-02 22:48:15,380 INFO L78 Accepts]: Start accepts. Automaton has 9553 states and 11770 transitions. Word has length 153 [2021-11-02 22:48:15,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:15,380 INFO L470 AbstractCegarLoop]: Abstraction has 9553 states and 11770 transitions. [2021-11-02 22:48:15,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.4) internal successors, (234), 9 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:15,380 INFO L276 IsEmpty]: Start isEmpty. Operand 9553 states and 11770 transitions. [2021-11-02 22:48:15,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-02 22:48:15,387 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:15,387 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:48:15,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:15,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:15,589 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:48:15,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:15,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1676455934, now seen corresponding path program 1 times [2021-11-02 22:48:15,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:15,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998491622] [2021-11-02 22:48:15,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:15,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:15,702 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-02 22:48:15,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:15,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998491622] [2021-11-02 22:48:15,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998491622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:15,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:15,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:48:15,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536023023] [2021-11-02 22:48:15,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:48:15,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:15,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:48:15,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:48:15,705 INFO L87 Difference]: Start difference. First operand 9553 states and 11770 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2021-11-02 22:48:17,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:17,827 INFO L93 Difference]: Finished difference Result 15079 states and 18555 transitions. [2021-11-02 22:48:17,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:48:17,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 153 [2021-11-02 22:48:17,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:17,835 INFO L225 Difference]: With dead ends: 15079 [2021-11-02 22:48:17,835 INFO L226 Difference]: Without dead ends: 6085 [2021-11-02 22:48:17,840 INFO L786 BasicCegarLoop]: 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 [2021-11-02 22:48:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6085 states. [2021-11-02 22:48:19,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6085 to 6067. [2021-11-02 22:48:19,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6067 states, 6062 states have (on average 1.217584955460244) internal successors, (7381), 6066 states have internal predecessors, (7381), 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) [2021-11-02 22:48:19,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6067 states to 6067 states and 7381 transitions. [2021-11-02 22:48:19,374 INFO L78 Accepts]: Start accepts. Automaton has 6067 states and 7381 transitions. Word has length 153 [2021-11-02 22:48:19,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:19,374 INFO L470 AbstractCegarLoop]: Abstraction has 6067 states and 7381 transitions. [2021-11-02 22:48:19,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2021-11-02 22:48:19,374 INFO L276 IsEmpty]: Start isEmpty. Operand 6067 states and 7381 transitions. [2021-11-02 22:48:19,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-02 22:48:19,377 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:19,378 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:48:19,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-02 22:48:19,378 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:48:19,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:19,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1373202317, now seen corresponding path program 1 times [2021-11-02 22:48:19,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:19,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069191243] [2021-11-02 22:48:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:19,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 22:48:19,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:19,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069191243] [2021-11-02 22:48:19,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069191243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:19,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:19,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:48:19,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180059070] [2021-11-02 22:48:19,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:48:19,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:19,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:48:19,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:48:19,460 INFO L87 Difference]: Start difference. First operand 6067 states and 7381 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2021-11-02 22:48:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:21,712 INFO L93 Difference]: Finished difference Result 12513 states and 15311 transitions. [2021-11-02 22:48:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:48:21,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 154 [2021-11-02 22:48:21,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:21,721 INFO L225 Difference]: With dead ends: 12513 [2021-11-02 22:48:21,721 INFO L226 Difference]: Without dead ends: 7462 [2021-11-02 22:48:21,725 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:48:21,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7462 states. [2021-11-02 22:48:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7462 to 6060. [2021-11-02 22:48:23,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6060 states, 6055 states have (on average 1.2155243600330305) internal successors, (7360), 6059 states have internal predecessors, (7360), 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) [2021-11-02 22:48:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6060 states to 6060 states and 7360 transitions. [2021-11-02 22:48:23,283 INFO L78 Accepts]: Start accepts. Automaton has 6060 states and 7360 transitions. Word has length 154 [2021-11-02 22:48:23,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:23,284 INFO L470 AbstractCegarLoop]: Abstraction has 6060 states and 7360 transitions. [2021-11-02 22:48:23,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2021-11-02 22:48:23,284 INFO L276 IsEmpty]: Start isEmpty. Operand 6060 states and 7360 transitions. [2021-11-02 22:48:23,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-02 22:48:23,286 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:23,286 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:48:23,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-02 22:48:23,287 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:48:23,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:23,287 INFO L85 PathProgramCache]: Analyzing trace with hash 188289643, now seen corresponding path program 1 times [2021-11-02 22:48:23,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:23,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325390724] [2021-11-02 22:48:23,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:23,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:23,505 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:23,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:23,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325390724] [2021-11-02 22:48:23,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325390724] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:23,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89202655] [2021-11-02 22:48:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:23,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:23,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:48:23,507 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:48:23,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-02 22:48:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:24,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 22:48:24,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:25,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89202655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:25,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:48:25,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2021-11-02 22:48:25,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606727872] [2021-11-02 22:48:25,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:48:25,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:25,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:48:25,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:48:25,047 INFO L87 Difference]: Start difference. First operand 6060 states and 7360 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:31,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:31,827 INFO L93 Difference]: Finished difference Result 27608 states and 34411 transitions. [2021-11-02 22:48:31,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 22:48:31,828 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-02 22:48:31,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:31,849 INFO L225 Difference]: With dead ends: 27608 [2021-11-02 22:48:31,849 INFO L226 Difference]: Without dead ends: 22903 [2021-11-02 22:48:31,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2021-11-02 22:48:31,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22903 states. [2021-11-02 22:48:34,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22903 to 8600. [2021-11-02 22:48:34,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8600 states, 8595 states have (on average 1.22152414194299) internal successors, (10499), 8599 states have internal predecessors, (10499), 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) [2021-11-02 22:48:34,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8600 states to 8600 states and 10499 transitions. [2021-11-02 22:48:34,345 INFO L78 Accepts]: Start accepts. Automaton has 8600 states and 10499 transitions. Word has length 154 [2021-11-02 22:48:34,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:34,345 INFO L470 AbstractCegarLoop]: Abstraction has 8600 states and 10499 transitions. [2021-11-02 22:48:34,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 8600 states and 10499 transitions. [2021-11-02 22:48:34,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-02 22:48:34,348 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:34,348 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:48:34,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:34,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:34,549 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:48:34,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:34,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1861432215, now seen corresponding path program 1 times [2021-11-02 22:48:34,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:34,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750778844] [2021-11-02 22:48:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:34,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:34,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:34,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750778844] [2021-11-02 22:48:34,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750778844] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:34,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146767158] [2021-11-02 22:48:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:34,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:34,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:48:34,755 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:48:34,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-02 22:48:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:36,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 22:48:36,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:36,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146767158] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:36,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:48:36,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-11-02 22:48:36,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737135442] [2021-11-02 22:48:36,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 22:48:36,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:36,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 22:48:36,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:48:36,518 INFO L87 Difference]: Start difference. First operand 8600 states and 10499 transitions. Second operand has 13 states, 13 states have (on average 21.692307692307693) internal successors, (282), 13 states have internal predecessors, (282), 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) [2021-11-02 22:48:56,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:56,632 INFO L93 Difference]: Finished difference Result 55505 states and 70694 transitions. [2021-11-02 22:48:56,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-11-02 22:48:56,632 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 21.692307692307693) internal successors, (282), 13 states have internal predecessors, (282), 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 155 [2021-11-02 22:48:56,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:56,689 INFO L225 Difference]: With dead ends: 55505 [2021-11-02 22:48:56,689 INFO L226 Difference]: Without dead ends: 49013 [2021-11-02 22:48:56,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7834 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2820, Invalid=16640, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 22:48:56,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49013 states. [2021-11-02 22:49:00,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49013 to 10931. [2021-11-02 22:49:00,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10931 states, 10926 states have (on average 1.2246933919092073) internal successors, (13381), 10930 states have internal predecessors, (13381), 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) [2021-11-02 22:49:00,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10931 states to 10931 states and 13381 transitions. [2021-11-02 22:49:00,447 INFO L78 Accepts]: Start accepts. Automaton has 10931 states and 13381 transitions. Word has length 155 [2021-11-02 22:49:00,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:00,448 INFO L470 AbstractCegarLoop]: Abstraction has 10931 states and 13381 transitions. [2021-11-02 22:49:00,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 21.692307692307693) internal successors, (282), 13 states have internal predecessors, (282), 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) [2021-11-02 22:49:00,448 INFO L276 IsEmpty]: Start isEmpty. Operand 10931 states and 13381 transitions. [2021-11-02 22:49:00,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-02 22:49:00,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:00,450 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:49:00,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:49:00,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:49:00,651 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:49:00,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:00,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1867735863, now seen corresponding path program 1 times [2021-11-02 22:49:00,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:49:00,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692030792] [2021-11-02 22:49:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:00,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:49:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:49:00,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:49:00,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692030792] [2021-11-02 22:49:00,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692030792] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:49:00,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779965261] [2021-11-02 22:49:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:00,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:49:00,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:49:00,814 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:49:00,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-02 22:49:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:01,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 22:49:01,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:49:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:49:02,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779965261] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:49:02,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:49:02,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2021-11-02 22:49:02,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482257404] [2021-11-02 22:49:02,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:49:02,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:49:02,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:49:02,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:49:02,495 INFO L87 Difference]: Start difference. First operand 10931 states and 13381 transitions. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 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) [2021-11-02 22:49:09,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:49:09,933 INFO L93 Difference]: Finished difference Result 29052 states and 36469 transitions. [2021-11-02 22:49:09,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 22:49:09,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 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 155 [2021-11-02 22:49:09,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:49:09,954 INFO L225 Difference]: With dead ends: 29052 [2021-11-02 22:49:09,955 INFO L226 Difference]: Without dead ends: 20691 [2021-11-02 22:49:09,962 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:49:09,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20691 states. [2021-11-02 22:49:13,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20691 to 9949. [2021-11-02 22:49:13,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9949 states, 9944 states have (on average 1.2274738535800482) internal successors, (12206), 9948 states have internal predecessors, (12206), 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) [2021-11-02 22:49:13,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9949 states to 9949 states and 12206 transitions. [2021-11-02 22:49:13,461 INFO L78 Accepts]: Start accepts. Automaton has 9949 states and 12206 transitions. Word has length 155 [2021-11-02 22:49:13,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:13,462 INFO L470 AbstractCegarLoop]: Abstraction has 9949 states and 12206 transitions. [2021-11-02 22:49:13,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 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) [2021-11-02 22:49:13,462 INFO L276 IsEmpty]: Start isEmpty. Operand 9949 states and 12206 transitions. [2021-11-02 22:49:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-02 22:49:13,465 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:13,465 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:49:13,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:49:13,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-11-02 22:49:13,665 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:49:13,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:13,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1921893418, now seen corresponding path program 1 times [2021-11-02 22:49:13,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:49:13,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226723182] [2021-11-02 22:49:13,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:13,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:49:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:49:13,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:49:13,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226723182] [2021-11-02 22:49:13,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226723182] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:49:13,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466438534] [2021-11-02 22:49:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:13,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:49:13,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:49:13,896 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:49:13,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-02 22:49:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:15,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 22:49:15,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:49:15,654 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:49:15,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466438534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:49:15,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:49:15,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2021-11-02 22:49:15,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560806020] [2021-11-02 22:49:15,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:49:15,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:49:15,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:49:15,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:49:15,656 INFO L87 Difference]: Start difference. First operand 9949 states and 12206 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:49:21,043 INFO L93 Difference]: Finished difference Result 21991 states and 27621 transitions. [2021-11-02 22:49:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:49:21,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-02 22:49:21,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:49:21,060 INFO L225 Difference]: With dead ends: 21991 [2021-11-02 22:49:21,061 INFO L226 Difference]: Without dead ends: 14642 [2021-11-02 22:49:21,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:49:21,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14642 states. [2021-11-02 22:49:24,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14642 to 9945. [2021-11-02 22:49:24,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9945 states, 9940 states have (on average 1.2267605633802816) internal successors, (12194), 9944 states have internal predecessors, (12194), 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) [2021-11-02 22:49:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9945 states to 9945 states and 12194 transitions. [2021-11-02 22:49:24,371 INFO L78 Accepts]: Start accepts. Automaton has 9945 states and 12194 transitions. Word has length 156 [2021-11-02 22:49:24,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:24,372 INFO L470 AbstractCegarLoop]: Abstraction has 9945 states and 12194 transitions. [2021-11-02 22:49:24,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:24,372 INFO L276 IsEmpty]: Start isEmpty. Operand 9945 states and 12194 transitions. [2021-11-02 22:49:24,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-02 22:49:24,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:24,374 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:49:24,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:49:24,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-11-02 22:49:24,575 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:49:24,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:24,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1411621101, now seen corresponding path program 1 times [2021-11-02 22:49:24,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:49:24,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386955050] [2021-11-02 22:49:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:24,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:49:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:49:24,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:49:24,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386955050] [2021-11-02 22:49:24,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386955050] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:49:24,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898106357] [2021-11-02 22:49:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:24,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:49:24,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:49:24,706 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:49:24,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-02 22:49:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:25,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 22:49:25,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:49:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:49:26,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898106357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:49:26,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:49:26,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 12 [2021-11-02 22:49:26,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652610036] [2021-11-02 22:49:26,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:49:26,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:49:26,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:49:26,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:49:26,603 INFO L87 Difference]: Start difference. First operand 9945 states and 12194 transitions. Second operand has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 8 states have internal predecessors, (157), 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) [2021-11-02 22:49:30,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:49:30,783 INFO L93 Difference]: Finished difference Result 19806 states and 24478 transitions. [2021-11-02 22:49:30,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 22:49:30,783 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 8 states have internal predecessors, (157), 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 157 [2021-11-02 22:49:30,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:49:30,798 INFO L225 Difference]: With dead ends: 19806 [2021-11-02 22:49:30,798 INFO L226 Difference]: Without dead ends: 11846 [2021-11-02 22:49:30,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:49:30,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11846 states. [2021-11-02 22:49:33,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11846 to 9402. [2021-11-02 22:49:33,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9402 states, 9397 states have (on average 1.2258167500266042) internal successors, (11519), 9401 states have internal predecessors, (11519), 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) [2021-11-02 22:49:33,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9402 states to 9402 states and 11519 transitions. [2021-11-02 22:49:33,723 INFO L78 Accepts]: Start accepts. Automaton has 9402 states and 11519 transitions. Word has length 157 [2021-11-02 22:49:33,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:33,723 INFO L470 AbstractCegarLoop]: Abstraction has 9402 states and 11519 transitions. [2021-11-02 22:49:33,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 8 states have internal predecessors, (157), 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) [2021-11-02 22:49:33,723 INFO L276 IsEmpty]: Start isEmpty. Operand 9402 states and 11519 transitions. [2021-11-02 22:49:33,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-02 22:49:33,725 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:33,726 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:49:33,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:49:33,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-02 22:49:33,926 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:49:33,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:33,927 INFO L85 PathProgramCache]: Analyzing trace with hash -188877085, now seen corresponding path program 1 times [2021-11-02 22:49:33,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:49:33,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4672793] [2021-11-02 22:49:33,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:33,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:49:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:49:34,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:49:34,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4672793] [2021-11-02 22:49:34,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4672793] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:49:34,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322978210] [2021-11-02 22:49:34,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:34,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:49:34,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:49:34,077 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:49:34,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-02 22:49:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:35,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 22:49:35,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:49:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:49:35,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322978210] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:49:35,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:49:35,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 9 [2021-11-02 22:49:35,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926163646] [2021-11-02 22:49:35,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:49:35,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:49:35,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:49:35,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:49:35,609 INFO L87 Difference]: Start difference. First operand 9402 states and 11519 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 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) [2021-11-02 22:49:41,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:49:41,905 INFO L93 Difference]: Finished difference Result 25864 states and 32367 transitions. [2021-11-02 22:49:41,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:49:41,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 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 158 [2021-11-02 22:49:41,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:49:41,921 INFO L225 Difference]: With dead ends: 25864 [2021-11-02 22:49:41,922 INFO L226 Difference]: Without dead ends: 18712 [2021-11-02 22:49:41,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:49:41,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18712 states. [2021-11-02 22:49:45,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18712 to 12711. [2021-11-02 22:49:45,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12711 states, 12706 states have (on average 1.230757122619235) internal successors, (15638), 12710 states have internal predecessors, (15638), 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) [2021-11-02 22:49:45,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 15638 transitions. [2021-11-02 22:49:45,944 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 15638 transitions. Word has length 158 [2021-11-02 22:49:45,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:45,945 INFO L470 AbstractCegarLoop]: Abstraction has 12711 states and 15638 transitions. [2021-11-02 22:49:45,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 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) [2021-11-02 22:49:45,945 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 15638 transitions. [2021-11-02 22:49:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-02 22:49:45,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:45,950 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:49:45,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-02 22:49:46,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-11-02 22:49:46,166 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:49:46,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:46,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2114719648, now seen corresponding path program 1 times [2021-11-02 22:49:46,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:49:46,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231341858] [2021-11-02 22:49:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:46,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:49:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:49:46,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:49:46,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231341858] [2021-11-02 22:49:46,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231341858] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:49:46,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833421442] [2021-11-02 22:49:46,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:46,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:49:46,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:49:46,299 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:49:46,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-02 22:49:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:47,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-02 22:49:47,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:49:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:49:48,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833421442] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:49:48,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:49:48,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-11-02 22:49:48,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079037984] [2021-11-02 22:49:48,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 22:49:48,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:49:48,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 22:49:48,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:49:48,171 INFO L87 Difference]: Start difference. First operand 12711 states and 15638 transitions. Second operand has 15 states, 15 states have (on average 17.666666666666668) internal successors, (265), 14 states have internal predecessors, (265), 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) [2021-11-02 22:50:00,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:50:00,314 INFO L93 Difference]: Finished difference Result 37895 states and 46992 transitions. [2021-11-02 22:50:00,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-11-02 22:50:00,314 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 17.666666666666668) internal successors, (265), 14 states have internal predecessors, (265), 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 164 [2021-11-02 22:50:00,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:50:00,468 INFO L225 Difference]: With dead ends: 37895 [2021-11-02 22:50:00,468 INFO L226 Difference]: Without dead ends: 26844 [2021-11-02 22:50:00,477 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6382 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1865, Invalid=15957, Unknown=0, NotChecked=0, Total=17822 [2021-11-02 22:50:00,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26844 states. [2021-11-02 22:50:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26844 to 14162. [2021-11-02 22:50:04,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14162 states, 14157 states have (on average 1.2357137811683265) internal successors, (17494), 14161 states have internal predecessors, (17494), 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) [2021-11-02 22:50:04,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14162 states to 14162 states and 17494 transitions. [2021-11-02 22:50:04,963 INFO L78 Accepts]: Start accepts. Automaton has 14162 states and 17494 transitions. Word has length 164 [2021-11-02 22:50:04,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:50:04,964 INFO L470 AbstractCegarLoop]: Abstraction has 14162 states and 17494 transitions. [2021-11-02 22:50:04,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.666666666666668) internal successors, (265), 14 states have internal predecessors, (265), 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) [2021-11-02 22:50:04,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14162 states and 17494 transitions. [2021-11-02 22:50:04,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-02 22:50:04,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:50:04,968 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:50:04,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-02 22:50:05,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-11-02 22:50:05,176 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:50:05,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:50:05,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1169052768, now seen corresponding path program 1 times [2021-11-02 22:50:05,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:50:05,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483246503] [2021-11-02 22:50:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:50:05,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:50:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:50:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-02 22:50:05,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:50:05,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483246503] [2021-11-02 22:50:05,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483246503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:50:05,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:50:05,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:50:05,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451090447] [2021-11-02 22:50:05,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:50:05,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:50:05,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:50:05,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:50:05,226 INFO L87 Difference]: Start difference. First operand 14162 states and 17494 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2021-11-02 22:50:08,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:50:08,980 INFO L93 Difference]: Finished difference Result 24755 states and 30566 transitions. [2021-11-02 22:50:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:50:08,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 164 [2021-11-02 22:50:08,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:50:08,991 INFO L225 Difference]: With dead ends: 24755 [2021-11-02 22:50:08,991 INFO L226 Difference]: Without dead ends: 11052 [2021-11-02 22:50:08,997 INFO L786 BasicCegarLoop]: 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 [2021-11-02 22:50:09,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11052 states. [2021-11-02 22:50:12,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11052 to 11052. [2021-11-02 22:50:12,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11052 states, 11047 states have (on average 1.2262152620620983) internal successors, (13546), 11051 states have internal predecessors, (13546), 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) [2021-11-02 22:50:12,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11052 states to 11052 states and 13546 transitions. [2021-11-02 22:50:12,547 INFO L78 Accepts]: Start accepts. Automaton has 11052 states and 13546 transitions. Word has length 164 [2021-11-02 22:50:12,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:50:12,547 INFO L470 AbstractCegarLoop]: Abstraction has 11052 states and 13546 transitions. [2021-11-02 22:50:12,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2021-11-02 22:50:12,547 INFO L276 IsEmpty]: Start isEmpty. Operand 11052 states and 13546 transitions. [2021-11-02 22:50:12,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-02 22:50:12,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:50:12,550 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:50:12,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-02 22:50:12,550 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:50:12,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:50:12,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1092934888, now seen corresponding path program 1 times [2021-11-02 22:50:12,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:50:12,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155236488] [2021-11-02 22:50:12,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:50:12,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:50:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:50:12,679 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 22:50:12,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:50:12,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155236488] [2021-11-02 22:50:12,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155236488] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:50:12,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836780120] [2021-11-02 22:50:12,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:50:12,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:50:12,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:50:12,681 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:50:12,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-02 22:50:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:50:14,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-02 22:50:14,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:50:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 22:50:14,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836780120] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:50:14,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:50:14,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 10 [2021-11-02 22:50:14,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914659578] [2021-11-02 22:50:14,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:50:14,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:50:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:50:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:50:14,874 INFO L87 Difference]: Start difference. First operand 11052 states and 13546 transitions. Second operand has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 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) [2021-11-02 22:50:21,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:50:21,646 INFO L93 Difference]: Finished difference Result 28597 states and 35623 transitions. [2021-11-02 22:50:21,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-02 22:50:21,647 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 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 165 [2021-11-02 22:50:21,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:50:21,662 INFO L225 Difference]: With dead ends: 28597 [2021-11-02 22:50:21,662 INFO L226 Difference]: Without dead ends: 19540 [2021-11-02 22:50:21,669 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:50:21,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19540 states. [2021-11-02 22:50:26,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19540 to 13520. [2021-11-02 22:50:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13520 states, 13515 states have (on average 1.2349981502034777) internal successors, (16691), 13519 states have internal predecessors, (16691), 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) [2021-11-02 22:50:26,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13520 states to 13520 states and 16691 transitions. [2021-11-02 22:50:26,542 INFO L78 Accepts]: Start accepts. Automaton has 13520 states and 16691 transitions. Word has length 165 [2021-11-02 22:50:26,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:50:26,542 INFO L470 AbstractCegarLoop]: Abstraction has 13520 states and 16691 transitions. [2021-11-02 22:50:26,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 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) [2021-11-02 22:50:26,543 INFO L276 IsEmpty]: Start isEmpty. Operand 13520 states and 16691 transitions. [2021-11-02 22:50:26,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-02 22:50:26,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:50:26,546 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:50:26,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-02 22:50:26,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:50:26,750 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:50:26,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:50:26,751 INFO L85 PathProgramCache]: Analyzing trace with hash 459886037, now seen corresponding path program 1 times [2021-11-02 22:50:26,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:50:26,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172777036] [2021-11-02 22:50:26,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:50:26,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:50:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:50:26,986 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:50:26,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:50:26,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172777036] [2021-11-02 22:50:26,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172777036] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:50:26,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121520114] [2021-11-02 22:50:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:50:26,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:50:26,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:50:26,988 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:50:27,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-02 22:50:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:50:28,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-02 22:50:28,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:50:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:50:30,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121520114] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:50:30,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:50:30,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2021-11-02 22:50:30,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264367342] [2021-11-02 22:50:30,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 22:50:30,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:50:30,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 22:50:30,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-11-02 22:50:30,851 INFO L87 Difference]: Start difference. First operand 13520 states and 16691 transitions. Second operand has 20 states, 20 states have (on average 14.75) internal successors, (295), 20 states have internal predecessors, (295), 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) [2021-11-02 22:51:05,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:51:05,897 INFO L93 Difference]: Finished difference Result 82316 states and 102797 transitions. [2021-11-02 22:51:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-02 22:51:05,897 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 14.75) internal successors, (295), 20 states have internal predecessors, (295), 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 168 [2021-11-02 22:51:05,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:51:05,984 INFO L225 Difference]: With dead ends: 82316 [2021-11-02 22:51:05,984 INFO L226 Difference]: Without dead ends: 70843 [2021-11-02 22:51:05,999 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2816 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=1204, Invalid=7726, Unknown=0, NotChecked=0, Total=8930 [2021-11-02 22:51:06,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70843 states. [2021-11-02 22:51:18,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70843 to 31131. [2021-11-02 22:51:18,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31131 states, 31126 states have (on average 1.2531966844438733) internal successors, (39007), 31130 states have internal predecessors, (39007), 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) [2021-11-02 22:51:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31131 states to 31131 states and 39007 transitions. [2021-11-02 22:51:18,936 INFO L78 Accepts]: Start accepts. Automaton has 31131 states and 39007 transitions. Word has length 168 [2021-11-02 22:51:18,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:51:18,936 INFO L470 AbstractCegarLoop]: Abstraction has 31131 states and 39007 transitions. [2021-11-02 22:51:18,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.75) internal successors, (295), 20 states have internal predecessors, (295), 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) [2021-11-02 22:51:18,937 INFO L276 IsEmpty]: Start isEmpty. Operand 31131 states and 39007 transitions. [2021-11-02 22:51:18,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-02 22:51:18,943 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:51:18,943 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:51:18,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-02 22:51:19,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:51:19,144 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:51:19,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:51:19,144 INFO L85 PathProgramCache]: Analyzing trace with hash 195238547, now seen corresponding path program 1 times [2021-11-02 22:51:19,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:51:19,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341380102] [2021-11-02 22:51:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:51:19,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:51:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:51:19,187 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-02 22:51:19,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:51:19,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341380102] [2021-11-02 22:51:19,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341380102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:51:19,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:51:19,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:51:19,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922739017] [2021-11-02 22:51:19,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:51:19,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:51:19,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:51:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:51:19,190 INFO L87 Difference]: Start difference. First operand 31131 states and 39007 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2021-11-02 22:51:30,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:51:30,839 INFO L93 Difference]: Finished difference Result 61854 states and 77586 transitions. [2021-11-02 22:51:30,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:51:30,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 168 [2021-11-02 22:51:30,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:51:30,875 INFO L225 Difference]: With dead ends: 61854 [2021-11-02 22:51:30,875 INFO L226 Difference]: Without dead ends: 31253 [2021-11-02 22:51:30,888 INFO L786 BasicCegarLoop]: 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 [2021-11-02 22:51:30,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31253 states. [2021-11-02 22:51:43,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31253 to 31253. [2021-11-02 22:51:43,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31253 states, 31248 states have (on average 1.2522081413210446) internal successors, (39129), 31252 states have internal predecessors, (39129), 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) [2021-11-02 22:51:43,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31253 states to 31253 states and 39129 transitions. [2021-11-02 22:51:43,404 INFO L78 Accepts]: Start accepts. Automaton has 31253 states and 39129 transitions. Word has length 168 [2021-11-02 22:51:43,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:51:43,404 INFO L470 AbstractCegarLoop]: Abstraction has 31253 states and 39129 transitions. [2021-11-02 22:51:43,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2021-11-02 22:51:43,405 INFO L276 IsEmpty]: Start isEmpty. Operand 31253 states and 39129 transitions. [2021-11-02 22:51:43,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-02 22:51:43,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:51:43,413 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:51:43,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-02 22:51:43,413 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-02 22:51:43,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:51:43,413 INFO L85 PathProgramCache]: Analyzing trace with hash -727928879, now seen corresponding path program 1 times [2021-11-02 22:51:43,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:51:43,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439227312] [2021-11-02 22:51:43,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:51:43,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:51:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:51:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:51:43,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:51:43,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439227312] [2021-11-02 22:51:43,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439227312] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:51:43,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223960456] [2021-11-02 22:51:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:51:43,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:51:43,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:51:43,562 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:51:43,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d49c542-4a0e-4082-ba73-072f3757f713/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-02 22:51:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:51:45,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-02 22:51:45,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:51:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:51:45,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223960456] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:51:45,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:51:45,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-11-02 22:51:45,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863040006] [2021-11-02 22:51:45,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 22:51:45,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:51:45,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 22:51:45,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:51:45,579 INFO L87 Difference]: Start difference. First operand 31253 states and 39129 transitions. Second operand has 17 states, 17 states have (on average 18.529411764705884) internal successors, (315), 17 states have internal predecessors, (315), 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)