./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX --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 351e3bc8fe69313dfbfbeaf7f37de5791a1bf381bb5ef0945347e83cb39fb485 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:45:31,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:45:31,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:45:31,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:45:31,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:45:31,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:45:31,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:45:31,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:45:31,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:45:31,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:45:31,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:45:31,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:45:31,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:45:31,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:45:31,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:45:31,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:45:31,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:45:31,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:45:31,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:45:31,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:45:31,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:45:31,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:45:31,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:45:31,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:45:31,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:45:31,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:45:31,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:45:31,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:45:31,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:45:31,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:45:31,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:45:31,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:45:31,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:45:31,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:45:32,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:45:32,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:45:32,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:45:32,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:45:32,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:45:32,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:45:32,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:45:32,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:45:32,059 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:45:32,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:45:32,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:45:32,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:45:32,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:45:32,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:45:32,064 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:45:32,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:45:32,064 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:45:32,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:45:32,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:45:32,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:45:32,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:45:32,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:45:32,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:45:32,067 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:45:32,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:45:32,068 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:45:32,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:45:32,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:45:32,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:45:32,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:45:32,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:45:32,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:45:32,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:45:32,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:45:32,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:45:32,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:45:32,071 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:45:32,073 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:45:32,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:45:32,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:45:32,074 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_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 351e3bc8fe69313dfbfbeaf7f37de5791a1bf381bb5ef0945347e83cb39fb485 [2021-11-09 10:45:32,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:45:32,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:45:32,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:45:32,466 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:45:32,467 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:45:32,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-11-09 10:45:32,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX/data/b75aad6eb/88289f1cb14a4df9a90204543ec20355/FLAGfd45332a0 [2021-11-09 10:45:33,248 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:45:33,249 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-11-09 10:45:33,267 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX/data/b75aad6eb/88289f1cb14a4df9a90204543ec20355/FLAGfd45332a0 [2021-11-09 10:45:33,523 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX/data/b75aad6eb/88289f1cb14a4df9a90204543ec20355 [2021-11-09 10:45:33,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:45:33,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:45:33,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:45:33,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:45:33,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:45:33,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:45:33" (1/1) ... [2021-11-09 10:45:33,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@720f1746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:33, skipping insertion in model container [2021-11-09 10:45:33,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:45:33" (1/1) ... [2021-11-09 10:45:33,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:45:33,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:45:33,991 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_9b35d18e-029a-4558-b5ba-a4723c798c5a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[11101,11114] [2021-11-09 10:45:34,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:45:34,157 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:45:34,308 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_9b35d18e-029a-4558-b5ba-a4723c798c5a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[11101,11114] [2021-11-09 10:45:34,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:45:34,421 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:45:34,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:34 WrapperNode [2021-11-09 10:45:34,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:45:34,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:45:34,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:45:34,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:45:34,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:34" (1/1) ... [2021-11-09 10:45:34,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:34" (1/1) ... [2021-11-09 10:45:34,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:45:34,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:45:34,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:45:34,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:45:34,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:34" (1/1) ... [2021-11-09 10:45:34,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:34" (1/1) ... [2021-11-09 10:45:34,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:34" (1/1) ... [2021-11-09 10:45:34,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:34" (1/1) ... [2021-11-09 10:45:34,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:34" (1/1) ... [2021-11-09 10:45:34,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:34" (1/1) ... [2021-11-09 10:45:34,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:34" (1/1) ... [2021-11-09 10:45:34,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:45:34,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:45:34,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:45:34,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:45:34,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:34" (1/1) ... [2021-11-09 10:45:34,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:45:34,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:45:34,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:45:34,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b35d18e-029a-4558-b5ba-a4723c798c5a/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:45:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:45:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:45:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:45:34,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:45:36,055 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:45:36,056 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 10:45:36,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:45:36 BoogieIcfgContainer [2021-11-09 10:45:36,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:45:36,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:45:36,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:45:36,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:45:36,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:45:33" (1/3) ... [2021-11-09 10:45:36,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63231f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:45:36, skipping insertion in model container [2021-11-09 10:45:36,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:34" (2/3) ... [2021-11-09 10:45:36,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63231f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:45:36, skipping insertion in model container [2021-11-09 10:45:36,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:45:36" (3/3) ... [2021-11-09 10:45:36,070 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-11-09 10:45:36,077 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:45:36,077 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 10:45:36,150 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:45:36,165 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 [2021-11-09 10:45:36,166 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 10:45:36,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 328 states have (on average 1.6524390243902438) internal successors, (542), 329 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:36,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 10:45:36,233 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:36,234 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:36,234 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:45:36,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash 498035691, now seen corresponding path program 1 times [2021-11-09 10:45:36,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:36,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998305616] [2021-11-09 10:45:36,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:36,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:36,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:36,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:36,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998305616] [2021-11-09 10:45:36,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998305616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:36,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:36,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:45:36,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911639576] [2021-11-09 10:45:36,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:45:36,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:36,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:45:36,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:45:36,794 INFO L87 Difference]: Start difference. First operand has 330 states, 328 states have (on average 1.6524390243902438) internal successors, (542), 329 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:37,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:37,012 INFO L93 Difference]: Finished difference Result 632 states and 1022 transitions. [2021-11-09 10:45:37,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:45:37,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-09 10:45:37,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:37,032 INFO L225 Difference]: With dead ends: 632 [2021-11-09 10:45:37,033 INFO L226 Difference]: Without dead ends: 327 [2021-11-09 10:45:37,038 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:45:37,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-09 10:45:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-11-09 10:45:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.5368098159509203) internal successors, (501), 326 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 501 transitions. [2021-11-09 10:45:37,114 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 501 transitions. Word has length 79 [2021-11-09 10:45:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:37,115 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 501 transitions. [2021-11-09 10:45:37,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:37,116 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 501 transitions. [2021-11-09 10:45:37,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-09 10:45:37,123 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:37,123 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:37,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:45:37,124 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:45:37,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:37,126 INFO L85 PathProgramCache]: Analyzing trace with hash 2093359288, now seen corresponding path program 1 times [2021-11-09 10:45:37,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:37,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557660397] [2021-11-09 10:45:37,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:37,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:37,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:37,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557660397] [2021-11-09 10:45:37,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557660397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:37,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:37,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:45:37,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957638270] [2021-11-09 10:45:37,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:45:37,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:37,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:45:37,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:37,383 INFO L87 Difference]: Start difference. First operand 327 states and 501 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:37,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:37,466 INFO L93 Difference]: Finished difference Result 761 states and 1193 transitions. [2021-11-09 10:45:37,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:45:37,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-09 10:45:37,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:37,473 INFO L225 Difference]: With dead ends: 761 [2021-11-09 10:45:37,473 INFO L226 Difference]: Without dead ends: 483 [2021-11-09 10:45:37,476 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 [2021-11-09 10:45:37,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-09 10:45:37,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 481. [2021-11-09 10:45:37,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.5520833333333333) internal successors, (745), 480 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 745 transitions. [2021-11-09 10:45:37,526 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 745 transitions. Word has length 110 [2021-11-09 10:45:37,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:37,527 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 745 transitions. [2021-11-09 10:45:37,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 745 transitions. [2021-11-09 10:45:37,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-09 10:45:37,535 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:37,535 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:37,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:45:37,536 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:45:37,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:37,537 INFO L85 PathProgramCache]: Analyzing trace with hash -55375790, now seen corresponding path program 1 times [2021-11-09 10:45:37,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:37,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466546927] [2021-11-09 10:45:37,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:37,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:37,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:37,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466546927] [2021-11-09 10:45:37,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466546927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:37,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:37,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:45:37,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706372658] [2021-11-09 10:45:37,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:45:37,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:37,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:45:37,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:37,736 INFO L87 Difference]: Start difference. First operand 481 states and 745 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:37,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:37,831 INFO L93 Difference]: Finished difference Result 1163 states and 1832 transitions. [2021-11-09 10:45:37,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:45:37,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-09 10:45:37,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:37,840 INFO L225 Difference]: With dead ends: 1163 [2021-11-09 10:45:37,841 INFO L226 Difference]: Without dead ends: 744 [2021-11-09 10:45:37,843 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 [2021-11-09 10:45:37,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-11-09 10:45:37,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 742. [2021-11-09 10:45:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 1.562753036437247) internal successors, (1158), 741 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1158 transitions. [2021-11-09 10:45:37,937 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1158 transitions. Word has length 112 [2021-11-09 10:45:37,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:37,938 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1158 transitions. [2021-11-09 10:45:37,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:37,939 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1158 transitions. [2021-11-09 10:45:37,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-09 10:45:37,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:37,950 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:37,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 10:45:37,951 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:45:37,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:37,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1569587546, now seen corresponding path program 1 times [2021-11-09 10:45:37,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:37,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342872925] [2021-11-09 10:45:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:37,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:38,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:38,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:38,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342872925] [2021-11-09 10:45:38,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342872925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:38,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:38,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:45:38,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733137751] [2021-11-09 10:45:38,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:45:38,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:45:38,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:38,120 INFO L87 Difference]: Start difference. First operand 742 states and 1158 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:38,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:38,223 INFO L93 Difference]: Finished difference Result 1834 states and 2894 transitions. [2021-11-09 10:45:38,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:45:38,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-11-09 10:45:38,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:38,236 INFO L225 Difference]: With dead ends: 1834 [2021-11-09 10:45:38,237 INFO L226 Difference]: Without dead ends: 1167 [2021-11-09 10:45:38,241 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 [2021-11-09 10:45:38,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2021-11-09 10:45:38,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1165. [2021-11-09 10:45:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1164 states have (on average 1.5670103092783505) internal successors, (1824), 1164 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:38,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1824 transitions. [2021-11-09 10:45:38,311 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1824 transitions. Word has length 114 [2021-11-09 10:45:38,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:38,314 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 1824 transitions. [2021-11-09 10:45:38,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:38,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1824 transitions. [2021-11-09 10:45:38,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-09 10:45:38,319 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:38,319 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:38,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 10:45:38,320 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:45:38,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:38,322 INFO L85 PathProgramCache]: Analyzing trace with hash -598144290, now seen corresponding path program 1 times [2021-11-09 10:45:38,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:38,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383163304] [2021-11-09 10:45:38,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:38,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:38,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:38,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:38,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383163304] [2021-11-09 10:45:38,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383163304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:38,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:38,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:45:38,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326175137] [2021-11-09 10:45:38,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:45:38,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:38,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:45:38,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:38,430 INFO L87 Difference]: Start difference. First operand 1165 states and 1824 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:38,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:38,600 INFO L93 Difference]: Finished difference Result 2887 states and 4547 transitions. [2021-11-09 10:45:38,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:45:38,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-09 10:45:38,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:38,616 INFO L225 Difference]: With dead ends: 2887 [2021-11-09 10:45:38,616 INFO L226 Difference]: Without dead ends: 1810 [2021-11-09 10:45:38,619 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 [2021-11-09 10:45:38,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2021-11-09 10:45:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1808. [2021-11-09 10:45:38,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1808 states, 1807 states have (on average 1.563918096292197) internal successors, (2826), 1807 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:38,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2826 transitions. [2021-11-09 10:45:38,772 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2826 transitions. Word has length 116 [2021-11-09 10:45:38,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:38,773 INFO L470 AbstractCegarLoop]: Abstraction has 1808 states and 2826 transitions. [2021-11-09 10:45:38,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:38,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2826 transitions. [2021-11-09 10:45:38,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-09 10:45:38,783 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:38,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:38,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 10:45:38,784 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:45:38,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:38,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1082431554, now seen corresponding path program 1 times [2021-11-09 10:45:38,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:38,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808240517] [2021-11-09 10:45:38,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:38,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:38,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:38,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808240517] [2021-11-09 10:45:38,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808240517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:38,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:38,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:45:38,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333331016] [2021-11-09 10:45:38,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:45:38,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:38,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:45:38,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:38,878 INFO L87 Difference]: Start difference. First operand 1808 states and 2826 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) 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) [2021-11-09 10:45:39,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:39,096 INFO L93 Difference]: Finished difference Result 4392 states and 6872 transitions. [2021-11-09 10:45:39,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:45:39,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) 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 [2021-11-09 10:45:39,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:39,125 INFO L225 Difference]: With dead ends: 4392 [2021-11-09 10:45:39,125 INFO L226 Difference]: Without dead ends: 2685 [2021-11-09 10:45:39,129 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 [2021-11-09 10:45:39,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2021-11-09 10:45:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2683. [2021-11-09 10:45:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2683 states, 2682 states have (on average 1.5510812826249067) internal successors, (4160), 2682 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:39,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 4160 transitions. [2021-11-09 10:45:39,348 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 4160 transitions. Word has length 118 [2021-11-09 10:45:39,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:39,349 INFO L470 AbstractCegarLoop]: Abstraction has 2683 states and 4160 transitions. [2021-11-09 10:45:39,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) 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) [2021-11-09 10:45:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 4160 transitions. [2021-11-09 10:45:39,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-09 10:45:39,358 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:39,358 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:39,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 10:45:39,359 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:45:39,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:39,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1267336044, now seen corresponding path program 1 times [2021-11-09 10:45:39,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:39,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352011737] [2021-11-09 10:45:39,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:39,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:39,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:39,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352011737] [2021-11-09 10:45:39,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352011737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:39,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:39,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 10:45:39,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588769352] [2021-11-09 10:45:39,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:45:39,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:39,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:45:39,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:45:39,655 INFO L87 Difference]: Start difference. First operand 2683 states and 4160 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:41,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:41,064 INFO L93 Difference]: Finished difference Result 13585 states and 20972 transitions. [2021-11-09 10:45:41,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:45:41,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-11-09 10:45:41,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:41,191 INFO L225 Difference]: With dead ends: 13585 [2021-11-09 10:45:41,191 INFO L226 Difference]: Without dead ends: 10997 [2021-11-09 10:45:41,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:45:41,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10997 states. [2021-11-09 10:45:42,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10997 to 10989. [2021-11-09 10:45:42,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10989 states, 10988 states have (on average 1.534856206771023) internal successors, (16865), 10988 states have internal predecessors, (16865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:42,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10989 states to 10989 states and 16865 transitions. [2021-11-09 10:45:42,279 INFO L78 Accepts]: Start accepts. Automaton has 10989 states and 16865 transitions. Word has length 120 [2021-11-09 10:45:42,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:42,280 INFO L470 AbstractCegarLoop]: Abstraction has 10989 states and 16865 transitions. [2021-11-09 10:45:42,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:42,281 INFO L276 IsEmpty]: Start isEmpty. Operand 10989 states and 16865 transitions. [2021-11-09 10:45:42,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-09 10:45:42,318 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:42,319 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:42,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 10:45:42,319 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:45:42,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:42,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1888610653, now seen corresponding path program 1 times [2021-11-09 10:45:42,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:42,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190233181] [2021-11-09 10:45:42,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:42,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:42,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:42,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:42,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190233181] [2021-11-09 10:45:42,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190233181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:42,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:42,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:45:42,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990456735] [2021-11-09 10:45:42,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:45:42,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:42,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:45:42,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:42,483 INFO L87 Difference]: Start difference. First operand 10989 states and 16865 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:43,813 INFO L93 Difference]: Finished difference Result 27983 states and 42949 transitions. [2021-11-09 10:45:43,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:45:43,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-09 10:45:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:43,915 INFO L225 Difference]: With dead ends: 27983 [2021-11-09 10:45:43,916 INFO L226 Difference]: Without dead ends: 19183 [2021-11-09 10:45:43,936 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 [2021-11-09 10:45:43,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19183 states. [2021-11-09 10:45:45,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19183 to 19181. [2021-11-09 10:45:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19181 states, 19180 states have (on average 1.5241397288842544) internal successors, (29233), 19180 states have internal predecessors, (29233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:45,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19181 states to 19181 states and 29233 transitions. [2021-11-09 10:45:45,637 INFO L78 Accepts]: Start accepts. Automaton has 19181 states and 29233 transitions. Word has length 122 [2021-11-09 10:45:45,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:45,637 INFO L470 AbstractCegarLoop]: Abstraction has 19181 states and 29233 transitions. [2021-11-09 10:45:45,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:45,638 INFO L276 IsEmpty]: Start isEmpty. Operand 19181 states and 29233 transitions. [2021-11-09 10:45:45,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-09 10:45:45,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:45,699 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:45,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 10:45:45,700 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:45:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:45,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1052580555, now seen corresponding path program 1 times [2021-11-09 10:45:45,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:45,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610092757] [2021-11-09 10:45:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:45,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:45,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:45,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610092757] [2021-11-09 10:45:45,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610092757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:45,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:45,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:45:45,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322515707] [2021-11-09 10:45:45,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:45:45,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:45,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:45:45,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:45,818 INFO L87 Difference]: Start difference. First operand 19181 states and 29233 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:47,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:47,714 INFO L93 Difference]: Finished difference Result 44044 states and 67103 transitions. [2021-11-09 10:45:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:45:47,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-09 10:45:47,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:47,829 INFO L225 Difference]: With dead ends: 44044 [2021-11-09 10:45:47,830 INFO L226 Difference]: Without dead ends: 31182 [2021-11-09 10:45:47,856 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 [2021-11-09 10:45:47,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31182 states. [2021-11-09 10:45:50,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31182 to 31180. [2021-11-09 10:45:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31180 states, 31179 states have (on average 1.5127168927803971) internal successors, (47165), 31179 states have internal predecessors, (47165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:50,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31180 states to 31180 states and 47165 transitions. [2021-11-09 10:45:50,499 INFO L78 Accepts]: Start accepts. Automaton has 31180 states and 47165 transitions. Word has length 122 [2021-11-09 10:45:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:50,500 INFO L470 AbstractCegarLoop]: Abstraction has 31180 states and 47165 transitions. [2021-11-09 10:45:50,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:50,501 INFO L276 IsEmpty]: Start isEmpty. Operand 31180 states and 47165 transitions. [2021-11-09 10:45:50,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-09 10:45:50,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:50,657 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:50,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 10:45:50,658 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:45:50,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:50,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1542203229, now seen corresponding path program 1 times [2021-11-09 10:45:50,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:50,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332244187] [2021-11-09 10:45:50,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:50,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:50,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:50,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332244187] [2021-11-09 10:45:50,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332244187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:50,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:50,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:45:50,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179043688] [2021-11-09 10:45:50,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:45:50,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:50,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:45:50,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:50,772 INFO L87 Difference]: Start difference. First operand 31180 states and 47165 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:52,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:52,871 INFO L93 Difference]: Finished difference Result 63224 states and 95451 transitions. [2021-11-09 10:45:52,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:45:52,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-09 10:45:52,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:52,996 INFO L225 Difference]: With dead ends: 63224 [2021-11-09 10:45:52,997 INFO L226 Difference]: Without dead ends: 46710 [2021-11-09 10:45:53,028 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 [2021-11-09 10:45:53,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46710 states. [2021-11-09 10:45:55,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46710 to 46708. [2021-11-09 10:45:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46708 states, 46707 states have (on average 1.4988973815488043) internal successors, (70009), 46707 states have internal predecessors, (70009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46708 states to 46708 states and 70009 transitions. [2021-11-09 10:45:55,266 INFO L78 Accepts]: Start accepts. Automaton has 46708 states and 70009 transitions. Word has length 122 [2021-11-09 10:45:55,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:55,267 INFO L470 AbstractCegarLoop]: Abstraction has 46708 states and 70009 transitions. [2021-11-09 10:45:55,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:55,267 INFO L276 IsEmpty]: Start isEmpty. Operand 46708 states and 70009 transitions. [2021-11-09 10:45:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-09 10:45:55,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:55,446 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:55,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 10:45:55,447 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:45:55,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:55,447 INFO L85 PathProgramCache]: Analyzing trace with hash 893236855, now seen corresponding path program 1 times [2021-11-09 10:45:55,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:55,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757842948] [2021-11-09 10:45:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:55,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:55,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:55,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:55,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757842948] [2021-11-09 10:45:55,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757842948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:55,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:55,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:45:55,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655850095] [2021-11-09 10:45:55,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:45:55,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:55,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:45:55,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:45:55,538 INFO L87 Difference]: Start difference. First operand 46708 states and 70009 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:57,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:57,683 INFO L93 Difference]: Finished difference Result 77068 states and 114787 transitions. [2021-11-09 10:45:57,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:45:57,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-09 10:45:57,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:57,821 INFO L225 Difference]: With dead ends: 77068 [2021-11-09 10:45:57,822 INFO L226 Difference]: Without dead ends: 61578 [2021-11-09 10:45:57,858 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 [2021-11-09 10:45:57,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61578 states. [2021-11-09 10:46:00,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61578 to 61576. [2021-11-09 10:46:00,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61576 states, 61575 states have (on average 1.4795777507105157) internal successors, (91105), 61575 states have internal predecessors, (91105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61576 states to 61576 states and 91105 transitions. [2021-11-09 10:46:00,887 INFO L78 Accepts]: Start accepts. Automaton has 61576 states and 91105 transitions. Word has length 122 [2021-11-09 10:46:00,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:00,887 INFO L470 AbstractCegarLoop]: Abstraction has 61576 states and 91105 transitions. [2021-11-09 10:46:00,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:00,887 INFO L276 IsEmpty]: Start isEmpty. Operand 61576 states and 91105 transitions. [2021-11-09 10:46:01,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-09 10:46:01,006 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:01,006 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:01,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 10:46:01,007 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:46:01,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:01,007 INFO L85 PathProgramCache]: Analyzing trace with hash -2091528308, now seen corresponding path program 1 times [2021-11-09 10:46:01,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:01,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762894562] [2021-11-09 10:46:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:01,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:01,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:01,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762894562] [2021-11-09 10:46:01,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762894562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:01,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:01,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:46:01,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336499844] [2021-11-09 10:46:01,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:46:01,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:01,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:46:01,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:01,116 INFO L87 Difference]: Start difference. First operand 61576 states and 91105 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:06,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:06,293 INFO L93 Difference]: Finished difference Result 168969 states and 249571 transitions. [2021-11-09 10:46:06,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:46:06,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-09 10:46:06,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:06,516 INFO L225 Difference]: With dead ends: 168969 [2021-11-09 10:46:06,517 INFO L226 Difference]: Without dead ends: 107437 [2021-11-09 10:46:06,824 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:46:06,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107437 states. [2021-11-09 10:46:13,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107437 to 107435. [2021-11-09 10:46:13,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107435 states, 107434 states have (on average 1.4705400524973473) internal successors, (157986), 107434 states have internal predecessors, (157986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107435 states to 107435 states and 157986 transitions. [2021-11-09 10:46:13,551 INFO L78 Accepts]: Start accepts. Automaton has 107435 states and 157986 transitions. Word has length 124 [2021-11-09 10:46:13,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:13,552 INFO L470 AbstractCegarLoop]: Abstraction has 107435 states and 157986 transitions. [2021-11-09 10:46:13,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,552 INFO L276 IsEmpty]: Start isEmpty. Operand 107435 states and 157986 transitions. [2021-11-09 10:46:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-09 10:46:13,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:13,716 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:13,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 10:46:13,717 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:46:13,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:13,718 INFO L85 PathProgramCache]: Analyzing trace with hash 790516460, now seen corresponding path program 1 times [2021-11-09 10:46:13,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:13,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640833308] [2021-11-09 10:46:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:13,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:13,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:13,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640833308] [2021-11-09 10:46:13,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640833308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:13,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:13,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 10:46:13,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037152697] [2021-11-09 10:46:13,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:46:13,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:13,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:46:13,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:46:13,983 INFO L87 Difference]: Start difference. First operand 107435 states and 157986 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)