./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label01.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_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/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_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/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_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/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 65de5b720550425739629c673edc29b7a854e52f56e69a2e107d2cca3ffb2713 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:33:09,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:33:09,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:33:09,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:33:09,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:33:09,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:33:09,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:33:09,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:33:09,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:33:09,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:33:09,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:33:09,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:33:09,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:33:09,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:33:09,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:33:09,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:33:09,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:33:09,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:33:09,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:33:09,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:33:09,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:33:09,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:33:09,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:33:09,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:33:09,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:33:09,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:33:09,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:33:09,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:33:09,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:33:09,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:33:09,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:33:09,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:33:09,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:33:09,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:33:09,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:33:09,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:33:09,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:33:09,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:33:09,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:33:09,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:33:09,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:33:09,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:33:09,456 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:33:09,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:33:09,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:33:09,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:33:09,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:33:09,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:33:09,460 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:33:09,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:33:09,461 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:33:09,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:33:09,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:33:09,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:33:09,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:33:09,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:33:09,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:33:09,464 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:33:09,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:33:09,464 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:33:09,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:33:09,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:33:09,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:33:09,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:33:09,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:33:09,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:33:09,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:33:09,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:33:09,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:33:09,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:33:09,468 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:33:09,469 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:33:09,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:33:09,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:33:09,470 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_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65de5b720550425739629c673edc29b7a854e52f56e69a2e107d2cca3ffb2713 [2021-11-02 22:33:09,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:33:09,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:33:09,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:33:09,849 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:33:09,850 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:33:09,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/eca-rers2012/Problem12_label01.c [2021-11-02 22:33:09,949 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/data/64cf0a416/d0143a3a5cdb419096af412447743952/FLAGecfa6293c [2021-11-02 22:33:10,998 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:33:10,999 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/sv-benchmarks/c/eca-rers2012/Problem12_label01.c [2021-11-02 22:33:11,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/data/64cf0a416/d0143a3a5cdb419096af412447743952/FLAGecfa6293c [2021-11-02 22:33:11,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/data/64cf0a416/d0143a3a5cdb419096af412447743952 [2021-11-02 22:33:11,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:33:11,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:33:11,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:33:11,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:33:11,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:33:11,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:33:11" (1/1) ... [2021-11-02 22:33:11,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@238bd02c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:11, skipping insertion in model container [2021-11-02 22:33:11,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:33:11" (1/1) ... [2021-11-02 22:33:11,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:33:11,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:33:12,053 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_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/sv-benchmarks/c/eca-rers2012/Problem12_label01.c[5916,5929] [2021-11-02 22:33:13,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:33:13,244 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:33:13,290 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_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/sv-benchmarks/c/eca-rers2012/Problem12_label01.c[5916,5929] [2021-11-02 22:33:14,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:33:14,089 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:33:14,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:14 WrapperNode [2021-11-02 22:33:14,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:33:14,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:33:14,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:33:14,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:33:14,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:14" (1/1) ... [2021-11-02 22:33:14,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:14" (1/1) ... [2021-11-02 22:33:14,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:33:14,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:33:14,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:33:14,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:33:14,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:14" (1/1) ... [2021-11-02 22:33:14,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:14" (1/1) ... [2021-11-02 22:33:14,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:14" (1/1) ... [2021-11-02 22:33:14,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:14" (1/1) ... [2021-11-02 22:33:15,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:14" (1/1) ... [2021-11-02 22:33:15,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:14" (1/1) ... [2021-11-02 22:33:15,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:14" (1/1) ... [2021-11-02 22:33:15,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:33:15,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:33:15,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:33:15,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:33:15,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:14" (1/1) ... [2021-11-02 22:33:15,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:33:15,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:33:15,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:33:15,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:33:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:33:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:33:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:33:15,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:33:21,521 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:33:21,521 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-02 22:33:21,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:33:21 BoogieIcfgContainer [2021-11-02 22:33:21,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:33:21,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:33:21,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:33:21,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:33:21,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:33:11" (1/3) ... [2021-11-02 22:33:21,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f68807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:33:21, skipping insertion in model container [2021-11-02 22:33:21,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:14" (2/3) ... [2021-11-02 22:33:21,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f68807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:33:21, skipping insertion in model container [2021-11-02 22:33:21,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:33:21" (3/3) ... [2021-11-02 22:33:21,542 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label01.c [2021-11-02 22:33:21,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:33:21,549 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 22:33:21,634 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:33:21,645 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 22:33:21,645 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 22:33:21,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:21,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 22:33:21,703 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:21,703 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] [2021-11-02 22:33:21,704 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:33:21,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:21,711 INFO L85 PathProgramCache]: Analyzing trace with hash 433832817, now seen corresponding path program 1 times [2021-11-02 22:33:21,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:21,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20147490] [2021-11-02 22:33:21,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:21,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:22,147 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 22:33:22,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:22,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20147490] [2021-11-02 22:33:22,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20147490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:33:22,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:33:22,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:33:22,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793734484] [2021-11-02 22:33:22,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:33:22,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:22,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:33:22,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:33:22,204 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 22:33:27,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:33:27,384 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2021-11-02 22:33:27,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:33:27,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-02 22:33:27,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:33:27,480 INFO L225 Difference]: With dead ends: 2388 [2021-11-02 22:33:27,481 INFO L226 Difference]: Without dead ends: 1506 [2021-11-02 22:33:27,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:33:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2021-11-02 22:33:27,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2021-11-02 22:33:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6385382059800664) internal successors, (2466), 1505 states have internal predecessors, (2466), 0 states have call successors, (0), 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 22:33:27,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2466 transitions. [2021-11-02 22:33:27,675 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2466 transitions. Word has length 47 [2021-11-02 22:33:27,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:33:27,676 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 2466 transitions. [2021-11-02 22:33:27,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 22:33:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2466 transitions. [2021-11-02 22:33:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-02 22:33:27,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:27,693 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] [2021-11-02 22:33:27,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:33:27,694 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:33:27,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:27,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1500828227, now seen corresponding path program 1 times [2021-11-02 22:33:27,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:27,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279434427] [2021-11-02 22:33:27,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:27,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:28,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:28,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279434427] [2021-11-02 22:33:28,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279434427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:33:28,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:33:28,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:33:28,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251056019] [2021-11-02 22:33:28,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:33:28,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:28,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:33:28,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:33:28,029 INFO L87 Difference]: Start difference. First operand 1506 states and 2466 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 22:33:34,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:33:34,655 INFO L93 Difference]: Finished difference Result 4551 states and 7431 transitions. [2021-11-02 22:33:34,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:33:34,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-02 22:33:34,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:33:34,682 INFO L225 Difference]: With dead ends: 4551 [2021-11-02 22:33:34,683 INFO L226 Difference]: Without dead ends: 3010 [2021-11-02 22:33:34,686 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:33:34,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2021-11-02 22:33:34,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008. [2021-11-02 22:33:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.3418689723977386) internal successors, (4035), 3007 states have internal predecessors, (4035), 0 states have call successors, (0), 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 22:33:34,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4035 transitions. [2021-11-02 22:33:34,817 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4035 transitions. Word has length 118 [2021-11-02 22:33:34,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:33:34,821 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 4035 transitions. [2021-11-02 22:33:34,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 22:33:34,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4035 transitions. [2021-11-02 22:33:34,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-02 22:33:34,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:34,830 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, 1, 1, 1] [2021-11-02 22:33:34,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:33:34,832 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:33:34,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:34,837 INFO L85 PathProgramCache]: Analyzing trace with hash -94536638, now seen corresponding path program 1 times [2021-11-02 22:33:34,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:34,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93848816] [2021-11-02 22:33:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:34,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:35,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:35,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93848816] [2021-11-02 22:33:35,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93848816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:33:35,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:33:35,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:33:35,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446633650] [2021-11-02 22:33:35,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:33:35,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:35,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:33:35,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:33:35,076 INFO L87 Difference]: Start difference. First operand 3008 states and 4035 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 22:33:41,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:33:41,308 INFO L93 Difference]: Finished difference Result 9769 states and 12895 transitions. [2021-11-02 22:33:41,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:33:41,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 22:33:41,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:33:41,363 INFO L225 Difference]: With dead ends: 9769 [2021-11-02 22:33:41,364 INFO L226 Difference]: Without dead ends: 6763 [2021-11-02 22:33:41,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:33:41,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2021-11-02 22:33:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2021-11-02 22:33:41,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.2877846790890268) internal successors, (8708), 6762 states have internal predecessors, (8708), 0 states have call successors, (0), 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 22:33:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 8708 transitions. [2021-11-02 22:33:41,597 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 8708 transitions. Word has length 156 [2021-11-02 22:33:41,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:33:41,598 INFO L470 AbstractCegarLoop]: Abstraction has 6763 states and 8708 transitions. [2021-11-02 22:33:41,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 22:33:41,599 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 8708 transitions. [2021-11-02 22:33:41,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-02 22:33:41,604 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:41,605 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:41,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:33:41,605 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:33:41,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:41,606 INFO L85 PathProgramCache]: Analyzing trace with hash -282317822, now seen corresponding path program 1 times [2021-11-02 22:33:41,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:41,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33218969] [2021-11-02 22:33:41,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:41,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-02 22:33:41,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:41,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33218969] [2021-11-02 22:33:41,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33218969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:33:41,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:33:41,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:33:41,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020266] [2021-11-02 22:33:41,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:33:41,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:41,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:33:41,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:33:41,843 INFO L87 Difference]: Start difference. First operand 6763 states and 8708 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 22:33:46,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:33:46,989 INFO L93 Difference]: Finished difference Result 15816 states and 21400 transitions. [2021-11-02 22:33:46,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:33:46,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 259 [2021-11-02 22:33:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:33:47,166 INFO L225 Difference]: With dead ends: 15816 [2021-11-02 22:33:47,169 INFO L226 Difference]: Without dead ends: 9769 [2021-11-02 22:33:47,180 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:33:47,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2021-11-02 22:33:47,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9767. [2021-11-02 22:33:47,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.2733975015359411) internal successors, (12436), 9766 states have internal predecessors, (12436), 0 states have call successors, (0), 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 22:33:47,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12436 transitions. [2021-11-02 22:33:47,467 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12436 transitions. Word has length 259 [2021-11-02 22:33:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:33:47,469 INFO L470 AbstractCegarLoop]: Abstraction has 9767 states and 12436 transitions. [2021-11-02 22:33:47,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 22:33:47,469 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12436 transitions. [2021-11-02 22:33:47,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-02 22:33:47,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:47,475 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:47,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:33:47,476 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:33:47,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:47,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1708577746, now seen corresponding path program 1 times [2021-11-02 22:33:47,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:47,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365909745] [2021-11-02 22:33:47,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:47,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-02 22:33:47,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:47,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365909745] [2021-11-02 22:33:47,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365909745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:33:47,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:33:47,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:33:47,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344169322] [2021-11-02 22:33:47,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:33:47,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:47,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:33:47,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:33:47,719 INFO L87 Difference]: Start difference. First operand 9767 states and 12436 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 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 22:33:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:33:51,574 INFO L93 Difference]: Finished difference Result 26291 states and 34162 transitions. [2021-11-02 22:33:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:33:51,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 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 262 [2021-11-02 22:33:51,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:33:51,651 INFO L225 Difference]: With dead ends: 26291 [2021-11-02 22:33:51,651 INFO L226 Difference]: Without dead ends: 17277 [2021-11-02 22:33:51,668 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:33:51,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2021-11-02 22:33:52,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 17277. [2021-11-02 22:33:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17277 states, 17276 states have (on average 1.1980203750868257) internal successors, (20697), 17276 states have internal predecessors, (20697), 0 states have call successors, (0), 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 22:33:52,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17277 states to 17277 states and 20697 transitions. [2021-11-02 22:33:52,192 INFO L78 Accepts]: Start accepts. Automaton has 17277 states and 20697 transitions. Word has length 262 [2021-11-02 22:33:52,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:33:52,193 INFO L470 AbstractCegarLoop]: Abstraction has 17277 states and 20697 transitions. [2021-11-02 22:33:52,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 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 22:33:52,195 INFO L276 IsEmpty]: Start isEmpty. Operand 17277 states and 20697 transitions. [2021-11-02 22:33:52,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-02 22:33:52,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:52,203 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:52,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:33:52,204 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:33:52,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:52,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1863466117, now seen corresponding path program 1 times [2021-11-02 22:33:52,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:52,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822111108] [2021-11-02 22:33:52,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:52,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:52,387 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-02 22:33:52,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:52,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822111108] [2021-11-02 22:33:52,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822111108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:33:52,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:33:52,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:33:52,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774612270] [2021-11-02 22:33:52,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:33:52,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:52,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:33:52,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:33:52,392 INFO L87 Difference]: Start difference. First operand 17277 states and 20697 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 22:33:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:33:56,671 INFO L93 Difference]: Finished difference Result 33801 states and 40636 transitions. [2021-11-02 22:33:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:33:56,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 277 [2021-11-02 22:33:56,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:33:56,717 INFO L225 Difference]: With dead ends: 33801 [2021-11-02 22:33:56,718 INFO L226 Difference]: Without dead ends: 17277 [2021-11-02 22:33:56,740 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 22:33:56,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2021-11-02 22:33:57,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 16526. [2021-11-02 22:33:57,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16526 states, 16525 states have (on average 1.1696217851739787) internal successors, (19328), 16525 states have internal predecessors, (19328), 0 states have call successors, (0), 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 22:33:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16526 states to 16526 states and 19328 transitions. [2021-11-02 22:33:57,205 INFO L78 Accepts]: Start accepts. Automaton has 16526 states and 19328 transitions. Word has length 277 [2021-11-02 22:33:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:33:57,207 INFO L470 AbstractCegarLoop]: Abstraction has 16526 states and 19328 transitions. [2021-11-02 22:33:57,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 22:33:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 16526 states and 19328 transitions. [2021-11-02 22:33:57,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-02 22:33:57,215 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:57,215 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:57,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:33:57,216 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:33:57,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:57,217 INFO L85 PathProgramCache]: Analyzing trace with hash 268294806, now seen corresponding path program 1 times [2021-11-02 22:33:57,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:57,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462913355] [2021-11-02 22:33:57,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:57,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:57,459 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-02 22:33:57,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:57,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462913355] [2021-11-02 22:33:57,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462913355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:33:57,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:33:57,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:33:57,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309856755] [2021-11-02 22:33:57,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:33:57,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:57,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:33:57,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:33:57,464 INFO L87 Difference]: Start difference. First operand 16526 states and 19328 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 22:34:01,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:01,082 INFO L93 Difference]: Finished difference Result 32299 states and 37898 transitions. [2021-11-02 22:34:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:34:01,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 278 [2021-11-02 22:34:01,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:01,139 INFO L225 Difference]: With dead ends: 32299 [2021-11-02 22:34:01,140 INFO L226 Difference]: Without dead ends: 16526 [2021-11-02 22:34:01,162 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 22:34:01,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16526 states. [2021-11-02 22:34:01,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16526 to 16526. [2021-11-02 22:34:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16526 states, 16525 states have (on average 1.136641452344932) internal successors, (18783), 16525 states have internal predecessors, (18783), 0 states have call successors, (0), 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 22:34:01,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16526 states to 16526 states and 18783 transitions. [2021-11-02 22:34:01,440 INFO L78 Accepts]: Start accepts. Automaton has 16526 states and 18783 transitions. Word has length 278 [2021-11-02 22:34:01,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:01,441 INFO L470 AbstractCegarLoop]: Abstraction has 16526 states and 18783 transitions. [2021-11-02 22:34:01,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 22:34:01,442 INFO L276 IsEmpty]: Start isEmpty. Operand 16526 states and 18783 transitions. [2021-11-02 22:34:01,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-11-02 22:34:01,451 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:01,452 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:34:01,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:34:01,453 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:34:01,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:01,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1094495380, now seen corresponding path program 1 times [2021-11-02 22:34:01,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:34:01,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320302292] [2021-11-02 22:34:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:01,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:34:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-02 22:34:01,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:01,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320302292] [2021-11-02 22:34:01,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320302292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:01,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:01,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:34:01,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631786454] [2021-11-02 22:34:01,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:34:01,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:34:01,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:34:01,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:34:01,651 INFO L87 Difference]: Start difference. First operand 16526 states and 18783 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 22:34:05,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:05,256 INFO L93 Difference]: Finished difference Result 39809 states and 45884 transitions. [2021-11-02 22:34:05,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:34:05,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 346 [2021-11-02 22:34:05,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:05,293 INFO L225 Difference]: With dead ends: 39809 [2021-11-02 22:34:05,293 INFO L226 Difference]: Without dead ends: 24036 [2021-11-02 22:34:05,310 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 22:34:05,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24036 states. [2021-11-02 22:34:05,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24036 to 24036. [2021-11-02 22:34:05,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24036 states, 24035 states have (on average 1.121364676513418) internal successors, (26952), 24035 states have internal predecessors, (26952), 0 states have call successors, (0), 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 22:34:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24036 states to 24036 states and 26952 transitions. [2021-11-02 22:34:05,682 INFO L78 Accepts]: Start accepts. Automaton has 24036 states and 26952 transitions. Word has length 346 [2021-11-02 22:34:05,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:05,683 INFO L470 AbstractCegarLoop]: Abstraction has 24036 states and 26952 transitions. [2021-11-02 22:34:05,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 22:34:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand 24036 states and 26952 transitions. [2021-11-02 22:34:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-02 22:34:05,696 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:05,696 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:34:05,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:34:05,697 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:34:05,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:05,698 INFO L85 PathProgramCache]: Analyzing trace with hash 34930938, now seen corresponding path program 1 times [2021-11-02 22:34:05,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:34:05,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387090112] [2021-11-02 22:34:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:05,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:34:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-02 22:34:05,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:05,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387090112] [2021-11-02 22:34:05,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387090112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:05,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:05,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:34:05,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90559751] [2021-11-02 22:34:05,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:34:05,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:34:05,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:34:05,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:34:05,916 INFO L87 Difference]: Start difference. First operand 24036 states and 26952 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:34:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:10,173 INFO L93 Difference]: Finished difference Result 60086 states and 67590 transitions. [2021-11-02 22:34:10,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:34:10,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-11-02 22:34:10,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:10,230 INFO L225 Difference]: With dead ends: 60086 [2021-11-02 22:34:10,231 INFO L226 Difference]: Without dead ends: 36803 [2021-11-02 22:34:10,247 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 22:34:10,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36803 states. [2021-11-02 22:34:10,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36803 to 36052. [2021-11-02 22:34:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36052 states, 36051 states have (on average 1.116224237885218) internal successors, (40241), 36051 states have internal predecessors, (40241), 0 states have call successors, (0), 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 22:34:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36052 states to 36052 states and 40241 transitions. [2021-11-02 22:34:10,854 INFO L78 Accepts]: Start accepts. Automaton has 36052 states and 40241 transitions. Word has length 374 [2021-11-02 22:34:10,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:10,855 INFO L470 AbstractCegarLoop]: Abstraction has 36052 states and 40241 transitions. [2021-11-02 22:34:10,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:34:10,856 INFO L276 IsEmpty]: Start isEmpty. Operand 36052 states and 40241 transitions. [2021-11-02 22:34:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-11-02 22:34:10,863 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:10,864 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:34:10,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:34:10,865 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:34:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:10,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1471075396, now seen corresponding path program 1 times [2021-11-02 22:34:10,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:34:10,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864224839] [2021-11-02 22:34:10,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:10,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:34:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-02 22:34:11,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:11,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864224839] [2021-11-02 22:34:11,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864224839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:11,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:11,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:34:11,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319308036] [2021-11-02 22:34:11,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:34:11,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:34:11,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:34:11,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:34:11,080 INFO L87 Difference]: Start difference. First operand 36052 states and 40241 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 22:34:15,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:15,484 INFO L93 Difference]: Finished difference Result 85620 states and 96780 transitions. [2021-11-02 22:34:15,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:34:15,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 378 [2021-11-02 22:34:15,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:15,554 INFO L225 Difference]: With dead ends: 85620 [2021-11-02 22:34:15,554 INFO L226 Difference]: Without dead ends: 47317 [2021-11-02 22:34:15,583 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 22:34:15,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47317 states. [2021-11-02 22:34:16,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47317 to 46566. [2021-11-02 22:34:16,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46566 states, 46565 states have (on average 1.1066251476430795) internal successors, (51530), 46565 states have internal predecessors, (51530), 0 states have call successors, (0), 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 22:34:16,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46566 states to 46566 states and 51530 transitions. [2021-11-02 22:34:16,701 INFO L78 Accepts]: Start accepts. Automaton has 46566 states and 51530 transitions. Word has length 378 [2021-11-02 22:34:16,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:16,706 INFO L470 AbstractCegarLoop]: Abstraction has 46566 states and 51530 transitions. [2021-11-02 22:34:16,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 22:34:16,707 INFO L276 IsEmpty]: Start isEmpty. Operand 46566 states and 51530 transitions. [2021-11-02 22:34:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-11-02 22:34:16,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:16,725 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:16,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 22:34:16,726 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:34:16,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:16,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2064090338, now seen corresponding path program 1 times [2021-11-02 22:34:16,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:34:16,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356591151] [2021-11-02 22:34:16,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:16,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:34:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-02 22:34:17,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:17,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356591151] [2021-11-02 22:34:17,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356591151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:17,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:17,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:34:17,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726049520] [2021-11-02 22:34:17,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:34:17,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:34:17,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:34:17,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:34:17,186 INFO L87 Difference]: Start difference. First operand 46566 states and 51530 transitions. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 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 22:34:21,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:21,593 INFO L93 Difference]: Finished difference Result 93130 states and 103082 transitions. [2021-11-02 22:34:21,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:34:21,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 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 447 [2021-11-02 22:34:21,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:21,649 INFO L225 Difference]: With dead ends: 93130 [2021-11-02 22:34:21,649 INFO L226 Difference]: Without dead ends: 47317 [2021-11-02 22:34:21,668 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 22:34:21,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47317 states. [2021-11-02 22:34:22,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47317 to 45064. [2021-11-02 22:34:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45064 states, 45063 states have (on average 1.1033885893083017) internal successors, (49722), 45063 states have internal predecessors, (49722), 0 states have call successors, (0), 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 22:34:22,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45064 states to 45064 states and 49722 transitions. [2021-11-02 22:34:22,548 INFO L78 Accepts]: Start accepts. Automaton has 45064 states and 49722 transitions. Word has length 447 [2021-11-02 22:34:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:22,549 INFO L470 AbstractCegarLoop]: Abstraction has 45064 states and 49722 transitions. [2021-11-02 22:34:22,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 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 22:34:22,550 INFO L276 IsEmpty]: Start isEmpty. Operand 45064 states and 49722 transitions. [2021-11-02 22:34:22,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2021-11-02 22:34:22,564 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:22,565 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:34:22,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 22:34:22,566 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:34:22,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:22,567 INFO L85 PathProgramCache]: Analyzing trace with hash -55611106, now seen corresponding path program 1 times [2021-11-02 22:34:22,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:34:22,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882638907] [2021-11-02 22:34:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:22,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:34:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-11-02 22:34:22,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:22,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882638907] [2021-11-02 22:34:22,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882638907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:22,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:22,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:34:22,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137531928] [2021-11-02 22:34:22,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:34:22,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:34:22,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:34:22,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:34:22,797 INFO L87 Difference]: Start difference. First operand 45064 states and 49722 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:34:27,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:27,791 INFO L93 Difference]: Finished difference Result 124672 states and 138394 transitions. [2021-11-02 22:34:27,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:34:27,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 458 [2021-11-02 22:34:27,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:27,900 INFO L225 Difference]: With dead ends: 124672 [2021-11-02 22:34:27,900 INFO L226 Difference]: Without dead ends: 80361 [2021-11-02 22:34:27,923 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 22:34:27,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80361 states. [2021-11-02 22:34:29,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80361 to 78108. [2021-11-02 22:34:29,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78108 states, 78107 states have (on average 1.0932310804409335) internal successors, (85389), 78107 states have internal predecessors, (85389), 0 states have call successors, (0), 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 22:34:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78108 states to 78108 states and 85389 transitions. [2021-11-02 22:34:29,458 INFO L78 Accepts]: Start accepts. Automaton has 78108 states and 85389 transitions. Word has length 458 [2021-11-02 22:34:29,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:29,459 INFO L470 AbstractCegarLoop]: Abstraction has 78108 states and 85389 transitions. [2021-11-02 22:34:29,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:34:29,460 INFO L276 IsEmpty]: Start isEmpty. Operand 78108 states and 85389 transitions. [2021-11-02 22:34:29,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2021-11-02 22:34:29,505 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:29,505 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:29,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 22:34:29,506 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:34:29,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:29,507 INFO L85 PathProgramCache]: Analyzing trace with hash 68735881, now seen corresponding path program 1 times [2021-11-02 22:34:29,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:34:29,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499675407] [2021-11-02 22:34:29,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:29,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:34:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 220 proven. 333 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-11-02 22:34:29,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:29,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499675407] [2021-11-02 22:34:29,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499675407] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:34:29,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358940282] [2021-11-02 22:34:29,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:29,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:34:29,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:34:29,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:34:29,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:34:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:30,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:34:30,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2021-11-02 22:34:32,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358940282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:32,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:34:32,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-02 22:34:32,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983744860] [2021-11-02 22:34:32,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:34:32,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:34:32,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:34:32,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:34:32,047 INFO L87 Difference]: Start difference. First operand 78108 states and 85389 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 22:34:36,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:36,519 INFO L93 Difference]: Finished difference Result 175740 states and 193050 transitions. [2021-11-02 22:34:36,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:34:36,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 485 [2021-11-02 22:34:36,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:36,670 INFO L225 Difference]: With dead ends: 175740 [2021-11-02 22:34:36,671 INFO L226 Difference]: Without dead ends: 98385 [2021-11-02 22:34:36,713 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:34:36,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98385 states. [2021-11-02 22:34:38,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98385 to 97634. [2021-11-02 22:34:38,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97634 states, 97633 states have (on average 1.0866510298771932) internal successors, (106093), 97633 states have internal predecessors, (106093), 0 states have call successors, (0), 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 22:34:38,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97634 states to 97634 states and 106093 transitions. [2021-11-02 22:34:38,613 INFO L78 Accepts]: Start accepts. Automaton has 97634 states and 106093 transitions. Word has length 485 [2021-11-02 22:34:38,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:38,614 INFO L470 AbstractCegarLoop]: Abstraction has 97634 states and 106093 transitions. [2021-11-02 22:34:38,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 22:34:38,615 INFO L276 IsEmpty]: Start isEmpty. Operand 97634 states and 106093 transitions. [2021-11-02 22:34:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2021-11-02 22:34:38,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:38,631 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:38,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:34:38,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce42c555-30f6-400f-96e4-6cfd2aeb2c6e/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-02 22:34:38,853 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:34:38,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:38,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1122620808, now seen corresponding path program 1 times [2021-11-02 22:34:38,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:34:38,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840682270] [2021-11-02 22:34:38,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:38,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:34:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 483 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-02 22:34:39,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:39,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840682270] [2021-11-02 22:34:39,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840682270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:39,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:39,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:34:39,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629643557] [2021-11-02 22:34:39,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:34:39,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:34:39,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:34:39,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:34:39,109 INFO L87 Difference]: Start difference. First operand 97634 states and 106093 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 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 22:34:43,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:43,384 INFO L93 Difference]: Finished difference Result 212539 states and 230747 transitions. [2021-11-02 22:34:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:34:43,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 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 497 [2021-11-02 22:34:43,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:43,541 INFO L225 Difference]: With dead ends: 212539 [2021-11-02 22:34:43,541 INFO L226 Difference]: Without dead ends: 111152 [2021-11-02 22:34:43,593 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 22:34:43,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111152 states. [2021-11-02 22:34:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111152 to 105144. [2021-11-02 22:34:45,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105144 states, 105143 states have (on average 1.0773232645064341) internal successors, (113273), 105143 states have internal predecessors, (113273), 0 states have call successors, (0), 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 22:34:45,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105144 states to 105144 states and 113273 transitions. [2021-11-02 22:34:45,623 INFO L78 Accepts]: Start accepts. Automaton has 105144 states and 113273 transitions. Word has length 497 [2021-11-02 22:34:45,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:45,624 INFO L470 AbstractCegarLoop]: Abstraction has 105144 states and 113273 transitions. [2021-11-02 22:34:45,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 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 22:34:45,624 INFO L276 IsEmpty]: Start isEmpty. Operand 105144 states and 113273 transitions. [2021-11-02 22:34:45,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2021-11-02 22:34:45,653 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:45,654 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:45,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 22:34:45,655 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:34:45,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:45,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1602928676, now seen corresponding path program 1 times [2021-11-02 22:34:45,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:34:45,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094168362] [2021-11-02 22:34:45,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:45,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:34:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-11-02 22:34:46,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:46,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094168362] [2021-11-02 22:34:46,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094168362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:46,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:46,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:34:46,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805776617] [2021-11-02 22:34:46,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:34:46,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:34:46,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:34:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:34:46,617 INFO L87 Difference]: Start difference. First operand 105144 states and 113273 transitions. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 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 22:34:50,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:50,876 INFO L93 Difference]: Finished difference Result 209535 states and 225788 transitions. [2021-11-02 22:34:50,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:34:50,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 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 661 [2021-11-02 22:34:50,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:51,031 INFO L225 Difference]: With dead ends: 209535 [2021-11-02 22:34:51,032 INFO L226 Difference]: Without dead ends: 105144 [2021-11-02 22:34:51,074 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 22:34:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105144 states. [2021-11-02 22:34:52,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105144 to 104393. [2021-11-02 22:34:52,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104393 states, 104392 states have (on average 1.0715284696145297) internal successors, (111859), 104392 states have internal predecessors, (111859), 0 states have call successors, (0), 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 22:34:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104393 states to 104393 states and 111859 transitions. [2021-11-02 22:34:52,725 INFO L78 Accepts]: Start accepts. Automaton has 104393 states and 111859 transitions. Word has length 661 [2021-11-02 22:34:52,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:52,727 INFO L470 AbstractCegarLoop]: Abstraction has 104393 states and 111859 transitions. [2021-11-02 22:34:52,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 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 22:34:52,727 INFO L276 IsEmpty]: Start isEmpty. Operand 104393 states and 111859 transitions. [2021-11-02 22:34:52,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2021-11-02 22:34:52,766 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:52,767 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:34:52,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 22:34:52,768 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:34:52,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:52,768 INFO L85 PathProgramCache]: Analyzing trace with hash 257438874, now seen corresponding path program 1 times [2021-11-02 22:34:52,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:34:52,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961098270] [2021-11-02 22:34:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:52,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:34:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-11-02 22:34:53,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:53,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961098270] [2021-11-02 22:34:53,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961098270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:53,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:53,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:34:53,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265260190] [2021-11-02 22:34:53,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:34:53,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:34:53,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:34:53,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:34:53,657 INFO L87 Difference]: Start difference. First operand 104393 states and 111859 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 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 22:34:58,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:58,610 INFO L93 Difference]: Finished difference Result 244081 states and 262555 transitions. [2021-11-02 22:34:58,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:34:58,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 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) Word has length 671 [2021-11-02 22:34:58,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:58,769 INFO L225 Difference]: With dead ends: 244081 [2021-11-02 22:34:58,769 INFO L226 Difference]: Without dead ends: 139690 [2021-11-02 22:34:58,802 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 22:34:58,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139690 states. [2021-11-02 22:35:00,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139690 to 131429. [2021-11-02 22:35:00,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131429 states, 131428 states have (on average 1.0641035395806069) internal successors, (139853), 131428 states have internal predecessors, (139853), 0 states have call successors, (0), 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 22:35:01,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131429 states to 131429 states and 139853 transitions. [2021-11-02 22:35:01,513 INFO L78 Accepts]: Start accepts. Automaton has 131429 states and 139853 transitions. Word has length 671 [2021-11-02 22:35:01,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:01,514 INFO L470 AbstractCegarLoop]: Abstraction has 131429 states and 139853 transitions. [2021-11-02 22:35:01,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 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 22:35:01,514 INFO L276 IsEmpty]: Start isEmpty. Operand 131429 states and 139853 transitions. [2021-11-02 22:35:01,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2021-11-02 22:35:01,537 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:01,538 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:35:01,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 22:35:01,538 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:35:01,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:01,539 INFO L85 PathProgramCache]: Analyzing trace with hash -345038468, now seen corresponding path program 1 times [2021-11-02 22:35:01,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:01,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841364457] [2021-11-02 22:35:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:01,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-02 22:35:01,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:01,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841364457] [2021-11-02 22:35:01,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841364457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:01,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:01,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:35:01,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632193703] [2021-11-02 22:35:01,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:35:01,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:01,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:35:01,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:35:01,961 INFO L87 Difference]: Start difference. First operand 131429 states and 139853 transitions. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 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 22:35:06,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:35:06,187 INFO L93 Difference]: Finished difference Result 262105 states and 278948 transitions. [2021-11-02 22:35:06,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:35:06,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 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) Word has length 732 [2021-11-02 22:35:06,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:35:06,355 INFO L225 Difference]: With dead ends: 262105 [2021-11-02 22:35:06,355 INFO L226 Difference]: Without dead ends: 131429 [2021-11-02 22:35:06,407 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 22:35:06,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131429 states. [2021-11-02 22:35:08,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131429 to 129927. [2021-11-02 22:35:08,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129927 states, 129926 states have (on average 1.0497667903268013) internal successors, (136392), 129926 states have internal predecessors, (136392), 0 states have call successors, (0), 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 22:35:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129927 states to 129927 states and 136392 transitions. [2021-11-02 22:35:08,929 INFO L78 Accepts]: Start accepts. Automaton has 129927 states and 136392 transitions. Word has length 732 [2021-11-02 22:35:08,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:08,930 INFO L470 AbstractCegarLoop]: Abstraction has 129927 states and 136392 transitions. [2021-11-02 22:35:08,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 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 22:35:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 129927 states and 136392 transitions. [2021-11-02 22:35:08,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2021-11-02 22:35:08,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:08,974 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:35:08,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 22:35:08,975 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:35:08,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:08,976 INFO L85 PathProgramCache]: Analyzing trace with hash 799646942, now seen corresponding path program 1 times [2021-11-02 22:35:08,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:08,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375647034] [2021-11-02 22:35:08,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:08,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-11-02 22:35:09,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:09,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375647034] [2021-11-02 22:35:09,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375647034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:09,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:09,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:35:09,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876065834] [2021-11-02 22:35:09,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:35:09,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:09,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:35:09,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:35:09,690 INFO L87 Difference]: Start difference. First operand 129927 states and 136392 transitions. Second operand has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 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 22:35:15,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:35:15,529 INFO L93 Difference]: Finished difference Result 261165 states and 274119 transitions. [2021-11-02 22:35:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:35:15,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 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) Word has length 775 [2021-11-02 22:35:15,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:35:15,703 INFO L225 Difference]: With dead ends: 261165 [2021-11-02 22:35:15,703 INFO L226 Difference]: Without dead ends: 131991 [2021-11-02 22:35:15,754 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 22:35:15,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131991 states. [2021-11-02 22:35:17,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131991 to 131429. [2021-11-02 22:35:18,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131429 states, 131428 states have (on average 1.0491904312627447) internal successors, (137893), 131428 states have internal predecessors, (137893), 0 states have call successors, (0), 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 22:35:18,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131429 states to 131429 states and 137893 transitions. [2021-11-02 22:35:18,291 INFO L78 Accepts]: Start accepts. Automaton has 131429 states and 137893 transitions. Word has length 775 [2021-11-02 22:35:18,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:18,292 INFO L470 AbstractCegarLoop]: Abstraction has 131429 states and 137893 transitions. [2021-11-02 22:35:18,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 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 22:35:18,292 INFO L276 IsEmpty]: Start isEmpty. Operand 131429 states and 137893 transitions. [2021-11-02 22:35:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2021-11-02 22:35:18,328 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:18,329 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:35:18,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 22:35:18,330 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:35:18,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:18,331 INFO L85 PathProgramCache]: Analyzing trace with hash 564759417, now seen corresponding path program 1 times [2021-11-02 22:35:18,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:18,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997693732] [2021-11-02 22:35:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:18,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 874 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-02 22:35:18,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:18,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997693732] [2021-11-02 22:35:18,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997693732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:18,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:18,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:35:18,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562462582] [2021-11-02 22:35:18,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:35:18,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:18,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:35:18,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:35:18,656 INFO L87 Difference]: Start difference. First operand 131429 states and 137893 transitions. Second operand has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 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 22:35:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:35:23,656 INFO L93 Difference]: Finished difference Result 265109 states and 278091 transitions. [2021-11-02 22:35:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:35:23,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 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 776 [2021-11-02 22:35:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:35:23,843 INFO L225 Difference]: With dead ends: 265109 [2021-11-02 22:35:23,843 INFO L226 Difference]: Without dead ends: 134433 [2021-11-02 22:35:23,906 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 22:35:24,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134433 states. [2021-11-02 22:35:25,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134433 to 127674. [2021-11-02 22:35:25,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127674 states, 127673 states have (on average 1.0329043728901177) internal successors, (131874), 127673 states have internal predecessors, (131874), 0 states have call successors, (0), 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 22:35:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127674 states to 127674 states and 131874 transitions. [2021-11-02 22:35:26,130 INFO L78 Accepts]: Start accepts. Automaton has 127674 states and 131874 transitions. Word has length 776 [2021-11-02 22:35:26,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:26,131 INFO L470 AbstractCegarLoop]: Abstraction has 127674 states and 131874 transitions. [2021-11-02 22:35:26,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 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 22:35:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 127674 states and 131874 transitions. [2021-11-02 22:35:26,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2021-11-02 22:35:26,784 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:26,785 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-02 22:35:26,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 22:35:26,786 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:35:26,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:26,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1375458458, now seen corresponding path program 1 times [2021-11-02 22:35:26,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:35:26,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649305596] [2021-11-02 22:35:26,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:26,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:35:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 1186 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-11-02 22:35:27,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:35:27,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649305596] [2021-11-02 22:35:27,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649305596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:27,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:27,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:35:27,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384814571] [2021-11-02 22:35:27,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:35:27,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:35:27,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:35:27,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:35:27,371 INFO L87 Difference]: Start difference. First operand 127674 states and 131874 transitions. Second operand has 4 states, 4 states have (on average 171.5) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 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 22:35:33,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:35:33,102 INFO L93 Difference]: Finished difference Result 262105 states and 270649 transitions. [2021-11-02 22:35:33,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:35:33,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 171.5) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 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 841 [2021-11-02 22:35:33,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:35:33,257 INFO L225 Difference]: With dead ends: 262105 [2021-11-02 22:35:33,258 INFO L226 Difference]: Without dead ends: 135184 [2021-11-02 22:35:33,299 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 22:35:33,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135184 states.