./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt --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 310063ef643a90e947dd66ba142cc8ae546f077a ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt --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 310063ef643a90e947dd66ba142cc8ae546f077a ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:34:18,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:34:18,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:34:18,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:34:18,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:34:18,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:34:18,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:34:18,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:34:18,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:34:18,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:34:18,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:34:18,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:34:18,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:34:18,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:34:18,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:34:18,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:34:18,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:34:18,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:34:18,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:34:18,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:34:18,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:34:18,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:34:18,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:34:18,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:34:18,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:34:18,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:34:18,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:34:18,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:34:18,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:34:18,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:34:18,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:34:18,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:34:18,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:34:18,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:34:18,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:34:18,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:34:18,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:34:18,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:34:18,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:34:18,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:34:18,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:34:18,682 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:34:18,717 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:34:18,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:34:18,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:34:18,718 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:34:18,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:34:18,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:34:18,723 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:34:18,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:34:18,723 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:34:18,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:34:18,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:34:18,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:34:18,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:34:18,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:34:18,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:34:18,726 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:34:18,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:34:18,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:34:18,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:34:18,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:34:18,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:34:18,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:34:18,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:34:18,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:34:18,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:34:18,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:34:18,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:34:18,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:34:18,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:34:18,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:34:18,731 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_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 310063ef643a90e947dd66ba142cc8ae546f077a [2021-10-13 00:34:19,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:34:19,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:34:19,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:34:19,086 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:34:19,087 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:34:19,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c [2021-10-13 00:34:19,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/data/c843d1e94/d0dd1677497b43d893801d9186da140d/FLAG668e42f4c [2021-10-13 00:34:19,807 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:34:19,817 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c [2021-10-13 00:34:19,847 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/data/c843d1e94/d0dd1677497b43d893801d9186da140d/FLAG668e42f4c [2021-10-13 00:34:20,093 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/data/c843d1e94/d0dd1677497b43d893801d9186da140d [2021-10-13 00:34:20,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:34:20,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:34:20,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:34:20,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:34:20,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:34:20,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:34:20" (1/1) ... [2021-10-13 00:34:20,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465d226a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:20, skipping insertion in model container [2021-10-13 00:34:20,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:34:20" (1/1) ... [2021-10-13 00:34:20,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:34:20,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:34:20,485 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_47c48098-b94a-4951-a9df-44410a5b1e4a/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c[37270,37283] [2021-10-13 00:34:20,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:34:20,505 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:34:20,566 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_47c48098-b94a-4951-a9df-44410a5b1e4a/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c[37270,37283] [2021-10-13 00:34:20,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:34:20,586 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:34:20,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:20 WrapperNode [2021-10-13 00:34:20,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:34:20,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:34:20,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:34:20,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:34:20,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:20" (1/1) ... [2021-10-13 00:34:20,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:20" (1/1) ... [2021-10-13 00:34:20,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:34:20,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:34:20,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:34:20,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:34:20,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:20" (1/1) ... [2021-10-13 00:34:20,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:20" (1/1) ... [2021-10-13 00:34:20,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:20" (1/1) ... [2021-10-13 00:34:20,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:20" (1/1) ... [2021-10-13 00:34:20,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:20" (1/1) ... [2021-10-13 00:34:20,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:20" (1/1) ... [2021-10-13 00:34:20,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:20" (1/1) ... [2021-10-13 00:34:20,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:34:20,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:34:20,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:34:20,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:34:20,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:20" (1/1) ... [2021-10-13 00:34:20,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:34:20,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:34:20,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:34:20,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:34:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:34:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:34:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:34:20,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:34:21,076 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:34:21,671 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-13 00:34:21,672 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-13 00:34:21,683 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:34:21,683 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 00:34:21,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:34:21 BoogieIcfgContainer [2021-10-13 00:34:21,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:34:21,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:34:21,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:34:21,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:34:21,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:34:20" (1/3) ... [2021-10-13 00:34:21,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfec25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:34:21, skipping insertion in model container [2021-10-13 00:34:21,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:20" (2/3) ... [2021-10-13 00:34:21,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfec25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:34:21, skipping insertion in model container [2021-10-13 00:34:21,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:34:21" (3/3) ... [2021-10-13 00:34:21,704 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-1a.c [2021-10-13 00:34:21,714 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:34:21,715 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:34:21,776 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:34:21,784 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 00:34:21,784 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:34:21,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 123 states have (on average 1.7317073170731707) internal successors, (213), 124 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:21,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 00:34:21,817 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:21,818 INFO L512 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] [2021-10-13 00:34:21,818 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:21,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:21,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1457697026, now seen corresponding path program 1 times [2021-10-13 00:34:21,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:21,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442215386] [2021-10-13 00:34:21,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:21,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:22,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:22,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442215386] [2021-10-13 00:34:22,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442215386] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:22,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:22,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:34:22,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015435327] [2021-10-13 00:34:22,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:22,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:22,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:22,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:22,316 INFO L87 Difference]: Start difference. First operand has 125 states, 123 states have (on average 1.7317073170731707) internal successors, (213), 124 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:22,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:22,585 INFO L93 Difference]: Finished difference Result 246 states and 421 transitions. [2021-10-13 00:34:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:22,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-10-13 00:34:22,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:22,610 INFO L225 Difference]: With dead ends: 246 [2021-10-13 00:34:22,610 INFO L226 Difference]: Without dead ends: 112 [2021-10-13 00:34:22,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:22,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-13 00:34:22,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-10-13 00:34:22,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.5225225225225225) internal successors, (169), 111 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2021-10-13 00:34:22,708 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 24 [2021-10-13 00:34:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:22,709 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2021-10-13 00:34:22,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2021-10-13 00:34:22,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 00:34:22,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:22,718 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:22,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:34:22,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:22,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:22,729 INFO L82 PathProgramCache]: Analyzing trace with hash -611475394, now seen corresponding path program 1 times [2021-10-13 00:34:22,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:22,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520095654] [2021-10-13 00:34:22,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:22,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:22,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:22,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520095654] [2021-10-13 00:34:22,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520095654] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:22,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:22,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:34:22,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684882880] [2021-10-13 00:34:22,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:22,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:22,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:22,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:22,910 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:23,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:23,094 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2021-10-13 00:34:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:23,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-10-13 00:34:23,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:23,104 INFO L225 Difference]: With dead ends: 233 [2021-10-13 00:34:23,105 INFO L226 Difference]: Without dead ends: 131 [2021-10-13 00:34:23,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:23,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-13 00:34:23,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2021-10-13 00:34:23,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5) internal successors, (189), 126 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2021-10-13 00:34:23,144 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2021-10-13 00:34:23,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:23,145 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2021-10-13 00:34:23,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2021-10-13 00:34:23,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 00:34:23,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:23,153 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:23,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:34:23,154 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:23,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:23,155 INFO L82 PathProgramCache]: Analyzing trace with hash 213639527, now seen corresponding path program 1 times [2021-10-13 00:34:23,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:23,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923106570] [2021-10-13 00:34:23,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:23,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 00:34:23,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:23,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923106570] [2021-10-13 00:34:23,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923106570] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:23,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:23,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:34:23,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763986086] [2021-10-13 00:34:23,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:23,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:23,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:23,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:23,277 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:23,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:23,445 INFO L93 Difference]: Finished difference Result 265 states and 400 transitions. [2021-10-13 00:34:23,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:23,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 50 [2021-10-13 00:34:23,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:23,449 INFO L225 Difference]: With dead ends: 265 [2021-10-13 00:34:23,449 INFO L226 Difference]: Without dead ends: 148 [2021-10-13 00:34:23,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:23,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-13 00:34:23,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2021-10-13 00:34:23,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4755244755244756) internal successors, (211), 143 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:23,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2021-10-13 00:34:23,483 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2021-10-13 00:34:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:23,483 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2021-10-13 00:34:23,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:23,484 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2021-10-13 00:34:23,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 00:34:23,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:23,486 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:23,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:34:23,487 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:23,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:23,488 INFO L82 PathProgramCache]: Analyzing trace with hash 370823208, now seen corresponding path program 1 times [2021-10-13 00:34:23,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:23,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261954716] [2021-10-13 00:34:23,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:23,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:23,653 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 00:34:23,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:23,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261954716] [2021-10-13 00:34:23,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261954716] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:23,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:23,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:34:23,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208908206] [2021-10-13 00:34:23,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:23,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:23,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:23,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:23,657 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:23,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:23,857 INFO L93 Difference]: Finished difference Result 328 states and 496 transitions. [2021-10-13 00:34:23,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:23,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 00:34:23,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:23,861 INFO L225 Difference]: With dead ends: 328 [2021-10-13 00:34:23,862 INFO L226 Difference]: Without dead ends: 193 [2021-10-13 00:34:23,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:23,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-10-13 00:34:23,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 185. [2021-10-13 00:34:23,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.4184782608695652) internal successors, (261), 184 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:23,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 261 transitions. [2021-10-13 00:34:23,893 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 261 transitions. Word has length 67 [2021-10-13 00:34:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:23,893 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 261 transitions. [2021-10-13 00:34:23,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:23,894 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 261 transitions. [2021-10-13 00:34:23,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 00:34:23,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:23,907 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:23,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:34:23,908 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:23,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:23,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1434615126, now seen corresponding path program 1 times [2021-10-13 00:34:23,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:23,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702091158] [2021-10-13 00:34:23,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:23,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 00:34:23,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:23,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702091158] [2021-10-13 00:34:23,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702091158] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:23,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:23,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:34:23,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050635450] [2021-10-13 00:34:23,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:23,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:23,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:23,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:23,998 INFO L87 Difference]: Start difference. First operand 185 states and 261 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:24,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:24,131 INFO L93 Difference]: Finished difference Result 383 states and 548 transitions. [2021-10-13 00:34:24,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:24,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 00:34:24,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:24,134 INFO L225 Difference]: With dead ends: 383 [2021-10-13 00:34:24,134 INFO L226 Difference]: Without dead ends: 208 [2021-10-13 00:34:24,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:24,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-13 00:34:24,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2021-10-13 00:34:24,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.4039408866995073) internal successors, (285), 203 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 285 transitions. [2021-10-13 00:34:24,149 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 285 transitions. Word has length 67 [2021-10-13 00:34:24,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:24,152 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 285 transitions. [2021-10-13 00:34:24,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:24,153 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 285 transitions. [2021-10-13 00:34:24,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-13 00:34:24,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:24,161 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:24,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:34:24,161 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:24,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:24,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1023824768, now seen corresponding path program 1 times [2021-10-13 00:34:24,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:24,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274370805] [2021-10-13 00:34:24,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:24,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 00:34:24,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:24,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274370805] [2021-10-13 00:34:24,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274370805] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:24,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:24,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:34:24,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541524658] [2021-10-13 00:34:24,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:24,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:24,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:24,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:24,315 INFO L87 Difference]: Start difference. First operand 204 states and 285 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:24,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:24,462 INFO L93 Difference]: Finished difference Result 422 states and 598 transitions. [2021-10-13 00:34:24,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:24,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-10-13 00:34:24,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:24,476 INFO L225 Difference]: With dead ends: 422 [2021-10-13 00:34:24,476 INFO L226 Difference]: Without dead ends: 228 [2021-10-13 00:34:24,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:24,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-13 00:34:24,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2021-10-13 00:34:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.3883928571428572) internal successors, (311), 224 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 311 transitions. [2021-10-13 00:34:24,493 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 311 transitions. Word has length 83 [2021-10-13 00:34:24,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:24,495 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 311 transitions. [2021-10-13 00:34:24,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:24,495 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 311 transitions. [2021-10-13 00:34:24,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-13 00:34:24,499 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:24,500 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:24,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 00:34:24,500 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:24,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:24,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1619803512, now seen corresponding path program 1 times [2021-10-13 00:34:24,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:24,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435853330] [2021-10-13 00:34:24,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:24,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 00:34:24,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:24,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435853330] [2021-10-13 00:34:24,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435853330] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:24,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:24,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:34:24,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460270767] [2021-10-13 00:34:24,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:24,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:24,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:24,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:24,652 INFO L87 Difference]: Start difference. First operand 225 states and 311 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2021-10-13 00:34:24,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:24,698 INFO L93 Difference]: Finished difference Result 652 states and 903 transitions. [2021-10-13 00:34:24,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:24,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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 103 [2021-10-13 00:34:24,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:24,704 INFO L225 Difference]: With dead ends: 652 [2021-10-13 00:34:24,704 INFO L226 Difference]: Without dead ends: 437 [2021-10-13 00:34:24,705 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:24,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-10-13 00:34:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2021-10-13 00:34:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.3761467889908257) internal successors, (600), 436 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:24,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 600 transitions. [2021-10-13 00:34:24,738 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 600 transitions. Word has length 103 [2021-10-13 00:34:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:24,738 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 600 transitions. [2021-10-13 00:34:24,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2021-10-13 00:34:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 600 transitions. [2021-10-13 00:34:24,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-13 00:34:24,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:24,741 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:24,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 00:34:24,742 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:24,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:24,742 INFO L82 PathProgramCache]: Analyzing trace with hash -713589126, now seen corresponding path program 1 times [2021-10-13 00:34:24,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:24,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101296532] [2021-10-13 00:34:24,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:24,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-13 00:34:24,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:24,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101296532] [2021-10-13 00:34:24,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101296532] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:24,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:24,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:34:24,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495683143] [2021-10-13 00:34:24,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:24,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:24,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:24,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:24,816 INFO L87 Difference]: Start difference. First operand 437 states and 600 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:24,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:24,859 INFO L93 Difference]: Finished difference Result 885 states and 1214 transitions. [2021-10-13 00:34:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:24,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-10-13 00:34:24,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:24,864 INFO L225 Difference]: With dead ends: 885 [2021-10-13 00:34:24,864 INFO L226 Difference]: Without dead ends: 458 [2021-10-13 00:34:24,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:24,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-10-13 00:34:24,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2021-10-13 00:34:24,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 1.3719912472647702) internal successors, (627), 457 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:24,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 627 transitions. [2021-10-13 00:34:24,885 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 627 transitions. Word has length 103 [2021-10-13 00:34:24,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:24,886 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 627 transitions. [2021-10-13 00:34:24,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:24,886 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 627 transitions. [2021-10-13 00:34:24,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-13 00:34:24,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:24,888 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:24,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 00:34:24,889 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:24,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:24,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1034569449, now seen corresponding path program 1 times [2021-10-13 00:34:24,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:24,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358191298] [2021-10-13 00:34:24,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:24,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:24,938 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 00:34:24,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:24,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358191298] [2021-10-13 00:34:24,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358191298] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:24,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:24,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:34:24,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582180729] [2021-10-13 00:34:24,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:24,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:24,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:24,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:24,948 INFO L87 Difference]: Start difference. First operand 458 states and 627 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:24,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:24,983 INFO L93 Difference]: Finished difference Result 932 states and 1274 transitions. [2021-10-13 00:34:24,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:24,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 104 [2021-10-13 00:34:24,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:24,989 INFO L225 Difference]: With dead ends: 932 [2021-10-13 00:34:24,990 INFO L226 Difference]: Without dead ends: 484 [2021-10-13 00:34:24,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:24,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-13 00:34:25,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2021-10-13 00:34:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 1.3664596273291925) internal successors, (660), 483 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 660 transitions. [2021-10-13 00:34:25,012 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 660 transitions. Word has length 104 [2021-10-13 00:34:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:25,012 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 660 transitions. [2021-10-13 00:34:25,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:25,013 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 660 transitions. [2021-10-13 00:34:25,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 00:34:25,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:25,015 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:25,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 00:34:25,016 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:25,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:25,016 INFO L82 PathProgramCache]: Analyzing trace with hash -53319870, now seen corresponding path program 1 times [2021-10-13 00:34:25,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:25,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23105770] [2021-10-13 00:34:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:25,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:25,089 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-13 00:34:25,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:25,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23105770] [2021-10-13 00:34:25,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23105770] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:25,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:25,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:34:25,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488425729] [2021-10-13 00:34:25,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:25,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:25,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:25,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:25,093 INFO L87 Difference]: Start difference. First operand 484 states and 660 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:25,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:25,135 INFO L93 Difference]: Finished difference Result 699 states and 957 transitions. [2021-10-13 00:34:25,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:25,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 105 [2021-10-13 00:34:25,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:25,141 INFO L225 Difference]: With dead ends: 699 [2021-10-13 00:34:25,142 INFO L226 Difference]: Without dead ends: 697 [2021-10-13 00:34:25,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:25,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-10-13 00:34:25,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2021-10-13 00:34:25,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 1.3721264367816093) internal successors, (955), 696 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:25,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 955 transitions. [2021-10-13 00:34:25,173 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 955 transitions. Word has length 105 [2021-10-13 00:34:25,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:25,173 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 955 transitions. [2021-10-13 00:34:25,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:25,174 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 955 transitions. [2021-10-13 00:34:25,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-10-13 00:34:25,185 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:25,185 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:25,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 00:34:25,186 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:25,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:25,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1519363111, now seen corresponding path program 1 times [2021-10-13 00:34:25,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:25,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560553218] [2021-10-13 00:34:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:25,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-10-13 00:34:25,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:25,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560553218] [2021-10-13 00:34:25,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560553218] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:25,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:25,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:34:25,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869168282] [2021-10-13 00:34:25,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:25,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:25,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:25,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:25,276 INFO L87 Difference]: Start difference. First operand 697 states and 955 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:25,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:25,454 INFO L93 Difference]: Finished difference Result 1508 states and 2127 transitions. [2021-10-13 00:34:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:25,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 173 [2021-10-13 00:34:25,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:25,462 INFO L225 Difference]: With dead ends: 1508 [2021-10-13 00:34:25,463 INFO L226 Difference]: Without dead ends: 844 [2021-10-13 00:34:25,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:25,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-10-13 00:34:25,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 814. [2021-10-13 00:34:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 1.4071340713407134) internal successors, (1144), 813 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:25,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1144 transitions. [2021-10-13 00:34:25,497 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1144 transitions. Word has length 173 [2021-10-13 00:34:25,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:25,498 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1144 transitions. [2021-10-13 00:34:25,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:25,498 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1144 transitions. [2021-10-13 00:34:25,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-10-13 00:34:25,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:25,503 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:25,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 00:34:25,503 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:25,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:25,504 INFO L82 PathProgramCache]: Analyzing trace with hash -598161639, now seen corresponding path program 2 times [2021-10-13 00:34:25,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:25,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22364124] [2021-10-13 00:34:25,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:25,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-10-13 00:34:25,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:25,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22364124] [2021-10-13 00:34:25,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22364124] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:25,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:25,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:34:25,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364719566] [2021-10-13 00:34:25,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:25,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:25,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:25,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:25,578 INFO L87 Difference]: Start difference. First operand 814 states and 1144 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:25,764 INFO L93 Difference]: Finished difference Result 1870 states and 2708 transitions. [2021-10-13 00:34:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:25,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-10-13 00:34:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:25,779 INFO L225 Difference]: With dead ends: 1870 [2021-10-13 00:34:25,779 INFO L226 Difference]: Without dead ends: 1041 [2021-10-13 00:34:25,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:25,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2021-10-13 00:34:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1003. [2021-10-13 00:34:25,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 1002 states have (on average 1.3932135728542914) internal successors, (1396), 1002 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:25,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1396 transitions. [2021-10-13 00:34:25,820 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1396 transitions. Word has length 185 [2021-10-13 00:34:25,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:25,821 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 1396 transitions. [2021-10-13 00:34:25,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:25,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1396 transitions. [2021-10-13 00:34:25,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-10-13 00:34:25,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:25,827 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:25,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 00:34:25,827 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:25,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:25,828 INFO L82 PathProgramCache]: Analyzing trace with hash -759567935, now seen corresponding path program 1 times [2021-10-13 00:34:25,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:25,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872581213] [2021-10-13 00:34:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:25,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-10-13 00:34:25,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:25,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872581213] [2021-10-13 00:34:25,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872581213] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:25,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:25,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:34:25,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470402368] [2021-10-13 00:34:25,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:25,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:25,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:25,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:25,956 INFO L87 Difference]: Start difference. First operand 1003 states and 1396 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:26,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:26,026 INFO L93 Difference]: Finished difference Result 2282 states and 3180 transitions. [2021-10-13 00:34:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:26,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 194 [2021-10-13 00:34:26,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:26,037 INFO L225 Difference]: With dead ends: 2282 [2021-10-13 00:34:26,037 INFO L226 Difference]: Without dead ends: 1315 [2021-10-13 00:34:26,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:26,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-10-13 00:34:26,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1315. [2021-10-13 00:34:26,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1314 states have (on average 1.39117199391172) internal successors, (1828), 1314 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1828 transitions. [2021-10-13 00:34:26,108 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1828 transitions. Word has length 194 [2021-10-13 00:34:26,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:26,108 INFO L470 AbstractCegarLoop]: Abstraction has 1315 states and 1828 transitions. [2021-10-13 00:34:26,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:26,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1828 transitions. [2021-10-13 00:34:26,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-10-13 00:34:26,115 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:26,115 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:26,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 00:34:26,116 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:26,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:26,117 INFO L82 PathProgramCache]: Analyzing trace with hash -915330113, now seen corresponding path program 1 times [2021-10-13 00:34:26,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:26,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188631895] [2021-10-13 00:34:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:26,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:26,211 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-13 00:34:26,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:26,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188631895] [2021-10-13 00:34:26,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188631895] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:26,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:26,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:34:26,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228537506] [2021-10-13 00:34:26,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:26,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:26,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:26,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:26,214 INFO L87 Difference]: Start difference. First operand 1315 states and 1828 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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) [2021-10-13 00:34:26,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:26,298 INFO L93 Difference]: Finished difference Result 3583 states and 5032 transitions. [2021-10-13 00:34:26,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:26,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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 196 [2021-10-13 00:34:26,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:26,317 INFO L225 Difference]: With dead ends: 3583 [2021-10-13 00:34:26,317 INFO L226 Difference]: Without dead ends: 2325 [2021-10-13 00:34:26,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:26,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2021-10-13 00:34:26,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2323. [2021-10-13 00:34:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2322 states have (on average 1.4061154177433248) internal successors, (3265), 2322 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3265 transitions. [2021-10-13 00:34:26,423 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3265 transitions. Word has length 196 [2021-10-13 00:34:26,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:26,424 INFO L470 AbstractCegarLoop]: Abstraction has 2323 states and 3265 transitions. [2021-10-13 00:34:26,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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) [2021-10-13 00:34:26,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3265 transitions. [2021-10-13 00:34:26,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-10-13 00:34:26,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:26,431 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:26,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 00:34:26,431 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:26,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:26,432 INFO L82 PathProgramCache]: Analyzing trace with hash 342847369, now seen corresponding path program 1 times [2021-10-13 00:34:26,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:26,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608931583] [2021-10-13 00:34:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:26,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:34:26,513 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:34:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:34:26,736 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:34:26,736 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:34:26,738 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:34:26,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 00:34:26,747 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:34:26,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:34:26 BoogieIcfgContainer [2021-10-13 00:34:26,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:34:26,910 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:34:26,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:34:26,912 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:34:26,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:34:21" (3/4) ... [2021-10-13 00:34:26,916 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:34:26,916 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:34:26,918 INFO L168 Benchmark]: Toolchain (without parser) took 6816.85 ms. Allocated memory was 111.1 MB in the beginning and 153.1 MB in the end (delta: 41.9 MB). Free memory was 73.0 MB in the beginning and 89.9 MB in the end (delta: -16.9 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:34:26,921 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 111.1 MB. Free memory is still 89.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:34:26,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.83 ms. Allocated memory is still 111.1 MB. Free memory was 72.8 MB in the beginning and 82.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:34:26,922 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.83 ms. Allocated memory is still 111.1 MB. Free memory was 82.6 MB in the beginning and 80.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:34:26,923 INFO L168 Benchmark]: Boogie Preprocessor took 82.43 ms. Allocated memory is still 111.1 MB. Free memory was 80.0 MB in the beginning and 77.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:34:26,924 INFO L168 Benchmark]: RCFGBuilder took 899.80 ms. Allocated memory is still 111.1 MB. Free memory was 77.9 MB in the beginning and 54.5 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:34:26,924 INFO L168 Benchmark]: TraceAbstraction took 5212.10 ms. Allocated memory was 111.1 MB in the beginning and 153.1 MB in the end (delta: 41.9 MB). Free memory was 54.0 MB in the beginning and 90.9 MB in the end (delta: -36.9 MB). Peak memory consumption was 64.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:34:26,925 INFO L168 Benchmark]: Witness Printer took 6.11 ms. Allocated memory is still 153.1 MB. Free memory was 90.9 MB in the beginning and 89.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:34:26,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 111.1 MB. Free memory is still 89.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 481.83 ms. Allocated memory is still 111.1 MB. Free memory was 72.8 MB in the beginning and 82.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.83 ms. Allocated memory is still 111.1 MB. Free memory was 82.6 MB in the beginning and 80.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.43 ms. Allocated memory is still 111.1 MB. Free memory was 80.0 MB in the beginning and 77.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 899.80 ms. Allocated memory is still 111.1 MB. Free memory was 77.9 MB in the beginning and 54.5 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5212.10 ms. Allocated memory was 111.1 MB in the beginning and 153.1 MB in the end (delta: 41.9 MB). Free memory was 54.0 MB in the beginning and 90.9 MB in the end (delta: -36.9 MB). Peak memory consumption was 64.7 MB. Max. memory is 16.1 GB. * Witness Printer took 6.11 ms. Allocated memory is still 153.1 MB. Free memory was 90.9 MB in the beginning and 89.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 610]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseXor at line 358. Possible FailurePath: [L619] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int __retres59 ; [L68] s__state = 12292 [L69] blastFlag = 0 [L70] tmp = __VERIFIER_nondet_int() [L71] cb = 0 [L72] ret = -1 [L73] skip = 0 [L74] tmp___0 = 0 [L75] COND TRUE s__info_callback != 0 [L76] cb = s__info_callback [L84] s__in_handshake = s__in_handshake + 1 [L85] COND FALSE !(tmp___1 - 12288) [L95] COND TRUE 1 [L97] state = s__state [L98] COND TRUE s__state == 12292 [L201] s__new_session = 1 [L202] s__state = 4096 [L203] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L208] s__server = 0 [L209] COND TRUE cb != 0 [L214] COND FALSE !(s__version - 65280 != 768) [L220] s__type = 4096 [L221] COND FALSE !(s__init_buf___0 == 0) [L239] COND FALSE !(! tmp___4) [L245] COND FALSE !(! tmp___5) [L251] s__state = 4368 [L252] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L253] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND TRUE blastFlag == 0 [L260] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND TRUE blastFlag == 1 [L285] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND TRUE blastFlag == 2 [L308] blastFlag = 3 [L312] COND FALSE !(ret <= 0) [L318] ag_Y = 61087 [L319] s__state = 4416 [L320] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L324] ret = __VERIFIER_nondet_int() [L325] COND TRUE blastFlag == 3 [L326] blastFlag = 4 [L330] COND FALSE !(ret <= 0) [L335] s__state = 4432 [L336] ag_X = (unsigned short)65535 [L337] s__init_num = 0 [L338] COND FALSE !(! tmp___6) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L347] ret = __VERIFIER_nondet_int() [L348] COND FALSE !(blastFlag == 5) [L353] COND FALSE !(ret <= 0) [L358] s__state = ag_X ^ ag_Y [L359] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND FALSE !(blastFlag == 0) [L262] COND TRUE blastFlag == 4 [L263] blastFlag = 5 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND FALSE !(blastFlag == 1) [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND FALSE !(blastFlag == 2) [L312] COND FALSE !(ret <= 0) [L318] ag_Y = 61087 [L319] s__state = 4416 [L320] s__init_num = 0 [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L324] ret = __VERIFIER_nondet_int() [L325] COND FALSE !(blastFlag == 3) [L330] COND FALSE !(ret <= 0) [L335] s__state = 4432 [L336] ag_X = (unsigned short)65535 [L337] s__init_num = 0 [L338] COND FALSE !(! tmp___6) [L568] COND FALSE !(! s__s3__tmp__reuse_message) [L597] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L347] ret = __VERIFIER_nondet_int() [L348] COND TRUE blastFlag == 5 [L610] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4970.8ms, OverallIterations: 15, TraceHistogramMax: 11, EmptinessCheckTime: 91.2ms, AutomataDifference: 1996.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2634 SDtfs, 812 SDslu, 1502 SDs, 0 SdLazy, 896 SolverSat, 173 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 971.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2323occurred in iteration=14, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 539.8ms AutomataMinimizationTime, 14 MinimizatonAttempts, 93 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 115.2ms SsaConstructionTime, 547.8ms SatisfiabilityAnalysisTime, 1026.0ms InterpolantComputationTime, 1686 NumberOfCodeBlocks, 1686 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1476 ConstructedInterpolants, 0 QuantifiedInterpolants, 2960 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 2791/2791 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 00:34:26,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:34:29,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:34:29,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:34:29,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:34:29,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:34:29,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:34:29,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:34:29,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:34:29,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:34:29,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:34:29,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:34:29,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:34:29,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:34:29,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:34:29,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:34:29,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:34:29,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:34:29,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:34:29,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:34:29,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:34:29,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:34:29,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:34:29,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:34:29,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:34:29,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:34:29,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:34:29,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:34:29,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:34:29,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:34:29,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:34:29,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:34:29,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:34:29,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:34:29,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:34:29,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:34:29,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:34:29,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:34:29,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:34:29,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:34:29,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:34:29,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:34:29,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-13 00:34:29,998 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:34:29,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:34:29,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:34:30,000 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:34:30,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:34:30,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:34:30,003 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:34:30,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:34:30,004 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:34:30,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:34:30,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:34:30,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:34:30,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:34:30,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:34:30,007 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:34:30,008 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:34:30,008 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:34:30,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:34:30,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:34:30,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:34:30,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:34:30,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:34:30,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:34:30,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:34:30,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:34:30,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:34:30,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:34:30,011 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:34:30,012 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:34:30,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:34:30,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:34:30,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:34:30,013 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 310063ef643a90e947dd66ba142cc8ae546f077a [2021-10-13 00:34:30,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:34:30,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:34:30,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:34:30,521 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:34:30,522 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:34:30,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c [2021-10-13 00:34:30,616 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/data/58cd05b11/cbaa1639422343ccb50d692f466fe7ee/FLAGad4e7d2f3 [2021-10-13 00:34:31,215 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:34:31,216 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c [2021-10-13 00:34:31,232 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/data/58cd05b11/cbaa1639422343ccb50d692f466fe7ee/FLAGad4e7d2f3 [2021-10-13 00:34:31,544 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/data/58cd05b11/cbaa1639422343ccb50d692f466fe7ee [2021-10-13 00:34:31,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:34:31,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:34:31,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:34:31,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:34:31,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:34:31,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:34:31" (1/1) ... [2021-10-13 00:34:31,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@406b1589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:31, skipping insertion in model container [2021-10-13 00:34:31,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:34:31" (1/1) ... [2021-10-13 00:34:31,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:34:31,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:34:31,875 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_47c48098-b94a-4951-a9df-44410a5b1e4a/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c[37270,37283] [2021-10-13 00:34:31,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:34:31,898 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:34:32,008 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_47c48098-b94a-4951-a9df-44410a5b1e4a/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-1a.c[37270,37283] [2021-10-13 00:34:32,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:34:32,028 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:34:32,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:32 WrapperNode [2021-10-13 00:34:32,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:34:32,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:34:32,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:34:32,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:34:32,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:32" (1/1) ... [2021-10-13 00:34:32,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:32" (1/1) ... [2021-10-13 00:34:32,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:34:32,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:34:32,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:34:32,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:34:32,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:32" (1/1) ... [2021-10-13 00:34:32,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:32" (1/1) ... [2021-10-13 00:34:32,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:32" (1/1) ... [2021-10-13 00:34:32,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:32" (1/1) ... [2021-10-13 00:34:32,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:32" (1/1) ... [2021-10-13 00:34:32,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:32" (1/1) ... [2021-10-13 00:34:32,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:32" (1/1) ... [2021-10-13 00:34:32,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:34:32,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:34:32,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:34:32,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:34:32,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:32" (1/1) ... [2021-10-13 00:34:32,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:34:32,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:34:32,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:34:32,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:34:32,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 00:34:32,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:34:32,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:34:32,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:34:32,462 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:34:33,023 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-13 00:34:33,023 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-13 00:34:33,034 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:34:33,035 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 00:34:33,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:34:33 BoogieIcfgContainer [2021-10-13 00:34:33,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:34:33,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:34:33,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:34:33,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:34:33,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:34:31" (1/3) ... [2021-10-13 00:34:33,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f91b807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:34:33, skipping insertion in model container [2021-10-13 00:34:33,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:34:32" (2/3) ... [2021-10-13 00:34:33,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f91b807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:34:33, skipping insertion in model container [2021-10-13 00:34:33,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:34:33" (3/3) ... [2021-10-13 00:34:33,056 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-1a.c [2021-10-13 00:34:33,068 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:34:33,068 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:34:33,149 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:34:33,159 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 00:34:33,159 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:34:33,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 123 states have (on average 1.7317073170731707) internal successors, (213), 124 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:33,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 00:34:33,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:33,218 INFO L512 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] [2021-10-13 00:34:33,219 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:33,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:33,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1457697026, now seen corresponding path program 1 times [2021-10-13 00:34:33,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:33,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817330085] [2021-10-13 00:34:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:33,245 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:33,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:33,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:33,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:34:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:33,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:34:33,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:33,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:33,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:33,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817330085] [2021-10-13 00:34:33,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817330085] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:33,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:33,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:34:33,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620517225] [2021-10-13 00:34:33,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:33,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:33,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:33,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:33,770 INFO L87 Difference]: Start difference. First operand has 125 states, 123 states have (on average 1.7317073170731707) internal successors, (213), 124 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:34,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:34,051 INFO L93 Difference]: Finished difference Result 246 states and 421 transitions. [2021-10-13 00:34:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:34,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-10-13 00:34:34,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:34,091 INFO L225 Difference]: With dead ends: 246 [2021-10-13 00:34:34,091 INFO L226 Difference]: Without dead ends: 112 [2021-10-13 00:34:34,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:34,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-13 00:34:34,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-10-13 00:34:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.5225225225225225) internal successors, (169), 111 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:34,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2021-10-13 00:34:34,173 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 24 [2021-10-13 00:34:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:34,174 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2021-10-13 00:34:34,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:34,175 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2021-10-13 00:34:34,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 00:34:34,177 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:34,178 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:34,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 00:34:34,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:34,396 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:34,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:34,400 INFO L82 PathProgramCache]: Analyzing trace with hash -611475394, now seen corresponding path program 1 times [2021-10-13 00:34:34,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:34,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606536609] [2021-10-13 00:34:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:34,402 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:34,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:34,403 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:34,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:34:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:34,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:34:34,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:34,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:34,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:34,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606536609] [2021-10-13 00:34:34,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606536609] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:34,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:34,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:34:34,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712634741] [2021-10-13 00:34:34,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:34,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:34,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:34,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:34,865 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:35,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:35,108 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2021-10-13 00:34:35,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:35,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-10-13 00:34:35,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:35,118 INFO L225 Difference]: With dead ends: 233 [2021-10-13 00:34:35,118 INFO L226 Difference]: Without dead ends: 131 [2021-10-13 00:34:35,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-13 00:34:35,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2021-10-13 00:34:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5) internal successors, (189), 126 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:35,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2021-10-13 00:34:35,158 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2021-10-13 00:34:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:35,163 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2021-10-13 00:34:35,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:35,164 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2021-10-13 00:34:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 00:34:35,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:35,168 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:35,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:34:35,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:35,386 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:35,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:35,387 INFO L82 PathProgramCache]: Analyzing trace with hash 213639527, now seen corresponding path program 1 times [2021-10-13 00:34:35,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:35,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943411870] [2021-10-13 00:34:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:35,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:35,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:35,394 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:35,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:34:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:35,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:34:35,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:35,758 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 00:34:35,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:35,933 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 00:34:35,934 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:35,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943411870] [2021-10-13 00:34:35,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943411870] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:35,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:35,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:34:35,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486047508] [2021-10-13 00:34:35,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:35,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:35,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:35,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:35,938 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:36,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:36,112 INFO L93 Difference]: Finished difference Result 265 states and 400 transitions. [2021-10-13 00:34:36,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:36,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 50 [2021-10-13 00:34:36,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:36,115 INFO L225 Difference]: With dead ends: 265 [2021-10-13 00:34:36,115 INFO L226 Difference]: Without dead ends: 148 [2021-10-13 00:34:36,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:36,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-13 00:34:36,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2021-10-13 00:34:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4755244755244756) internal successors, (211), 143 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2021-10-13 00:34:36,131 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2021-10-13 00:34:36,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:36,131 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2021-10-13 00:34:36,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:36,132 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2021-10-13 00:34:36,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 00:34:36,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:36,136 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:36,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:34:36,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:36,351 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:36,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:36,352 INFO L82 PathProgramCache]: Analyzing trace with hash 370823208, now seen corresponding path program 1 times [2021-10-13 00:34:36,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:36,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338418909] [2021-10-13 00:34:36,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:36,353 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:36,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:36,355 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:36,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 00:34:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:36,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:34:36,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 00:34:36,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 00:34:37,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:37,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338418909] [2021-10-13 00:34:37,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338418909] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:37,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:37,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:34:37,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994970928] [2021-10-13 00:34:37,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:34:37,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:37,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:34:37,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:37,064 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:37,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:37,380 INFO L93 Difference]: Finished difference Result 349 states and 534 transitions. [2021-10-13 00:34:37,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:34:37,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 00:34:37,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:37,383 INFO L225 Difference]: With dead ends: 349 [2021-10-13 00:34:37,384 INFO L226 Difference]: Without dead ends: 215 [2021-10-13 00:34:37,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:37,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-13 00:34:37,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 207. [2021-10-13 00:34:37,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.441747572815534) internal successors, (297), 206 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 297 transitions. [2021-10-13 00:34:37,402 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 297 transitions. Word has length 67 [2021-10-13 00:34:37,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:37,403 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 297 transitions. [2021-10-13 00:34:37,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:37,404 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 297 transitions. [2021-10-13 00:34:37,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 00:34:37,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:37,408 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:37,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:34:37,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:37,623 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:37,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:37,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1528022105, now seen corresponding path program 1 times [2021-10-13 00:34:37,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:37,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667718965] [2021-10-13 00:34:37,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:37,624 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:37,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:37,625 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:37,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 00:34:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:37,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:34:37,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 00:34:38,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 00:34:38,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:38,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667718965] [2021-10-13 00:34:38,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667718965] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:38,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:38,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:34:38,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585738338] [2021-10-13 00:34:38,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:38,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:38,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:38,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:38,307 INFO L87 Difference]: Start difference. First operand 207 states and 297 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:38,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:38,479 INFO L93 Difference]: Finished difference Result 427 states and 620 transitions. [2021-10-13 00:34:38,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:38,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-13 00:34:38,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:38,482 INFO L225 Difference]: With dead ends: 427 [2021-10-13 00:34:38,482 INFO L226 Difference]: Without dead ends: 230 [2021-10-13 00:34:38,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:38,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-13 00:34:38,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 226. [2021-10-13 00:34:38,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.4266666666666667) internal successors, (321), 225 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:38,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 321 transitions. [2021-10-13 00:34:38,499 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 321 transitions. Word has length 68 [2021-10-13 00:34:38,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:38,499 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 321 transitions. [2021-10-13 00:34:38,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:38,500 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 321 transitions. [2021-10-13 00:34:38,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-13 00:34:38,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:38,505 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:38,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:34:38,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:38,720 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:38,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:38,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1678422895, now seen corresponding path program 1 times [2021-10-13 00:34:38,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:38,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194965859] [2021-10-13 00:34:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:38,722 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:38,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:38,723 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:38,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 00:34:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:38,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:34:38,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 00:34:39,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 00:34:39,494 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:39,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194965859] [2021-10-13 00:34:39,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194965859] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:39,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:39,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:34:39,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73131402] [2021-10-13 00:34:39,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:39,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:39,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:39,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:39,497 INFO L87 Difference]: Start difference. First operand 226 states and 321 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:39,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:39,667 INFO L93 Difference]: Finished difference Result 466 states and 670 transitions. [2021-10-13 00:34:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:39,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-10-13 00:34:39,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:39,670 INFO L225 Difference]: With dead ends: 466 [2021-10-13 00:34:39,670 INFO L226 Difference]: Without dead ends: 250 [2021-10-13 00:34:39,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:39,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-13 00:34:39,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2021-10-13 00:34:39,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.410569105691057) internal successors, (347), 246 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:39,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 347 transitions. [2021-10-13 00:34:39,685 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 347 transitions. Word has length 84 [2021-10-13 00:34:39,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:39,686 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 347 transitions. [2021-10-13 00:34:39,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:39,686 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 347 transitions. [2021-10-13 00:34:39,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-13 00:34:39,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:39,689 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:39,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:34:39,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:39,910 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:39,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:39,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1619803512, now seen corresponding path program 1 times [2021-10-13 00:34:39,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:39,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027644301] [2021-10-13 00:34:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:39,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:39,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:39,913 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:39,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 00:34:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:40,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:34:40,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 00:34:40,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 00:34:40,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:40,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027644301] [2021-10-13 00:34:40,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027644301] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:40,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:40,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:34:40,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120236887] [2021-10-13 00:34:40,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:34:40,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:40,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:34:40,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:40,780 INFO L87 Difference]: Start difference. First operand 247 states and 347 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:40,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:40,834 INFO L93 Difference]: Finished difference Result 743 states and 1042 transitions. [2021-10-13 00:34:40,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:34:40,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-10-13 00:34:40,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:40,838 INFO L225 Difference]: With dead ends: 743 [2021-10-13 00:34:40,843 INFO L226 Difference]: Without dead ends: 506 [2021-10-13 00:34:40,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-10-13 00:34:40,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2021-10-13 00:34:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 1.39009900990099) internal successors, (702), 505 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 702 transitions. [2021-10-13 00:34:40,869 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 702 transitions. Word has length 103 [2021-10-13 00:34:40,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:40,870 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 702 transitions. [2021-10-13 00:34:40,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:40,870 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 702 transitions. [2021-10-13 00:34:40,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-13 00:34:40,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:40,873 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:40,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:34:41,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:41,086 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:41,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:41,086 INFO L82 PathProgramCache]: Analyzing trace with hash -847602632, now seen corresponding path program 1 times [2021-10-13 00:34:41,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:41,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465060930] [2021-10-13 00:34:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:41,087 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:41,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:41,088 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:41,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 00:34:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:41,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:34:41,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:41,581 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-13 00:34:41,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-13 00:34:41,842 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:41,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465060930] [2021-10-13 00:34:41,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465060930] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:41,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:41,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:34:41,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989453326] [2021-10-13 00:34:41,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:41,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:41,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:41,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:41,846 INFO L87 Difference]: Start difference. First operand 506 states and 702 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:41,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:41,888 INFO L93 Difference]: Finished difference Result 1023 states and 1418 transitions. [2021-10-13 00:34:41,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:41,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-10-13 00:34:41,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:41,895 INFO L225 Difference]: With dead ends: 1023 [2021-10-13 00:34:41,895 INFO L226 Difference]: Without dead ends: 527 [2021-10-13 00:34:41,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:41,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-10-13 00:34:41,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2021-10-13 00:34:41,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.3859315589353611) internal successors, (729), 526 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 729 transitions. [2021-10-13 00:34:41,921 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 729 transitions. Word has length 103 [2021-10-13 00:34:41,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:41,923 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 729 transitions. [2021-10-13 00:34:41,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:41,924 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 729 transitions. [2021-10-13 00:34:41,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-13 00:34:41,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:41,926 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:41,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-13 00:34:42,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:42,141 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:42,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:42,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1168582955, now seen corresponding path program 1 times [2021-10-13 00:34:42,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:42,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122034449] [2021-10-13 00:34:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:42,144 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:42,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:42,146 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:42,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 00:34:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:42,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:34:42,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 00:34:42,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-13 00:34:43,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:43,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122034449] [2021-10-13 00:34:43,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122034449] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:43,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:43,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:34:43,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167026511] [2021-10-13 00:34:43,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:34:43,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:43,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:34:43,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:43,153 INFO L87 Difference]: Start difference. First operand 527 states and 729 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:43,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:43,191 INFO L93 Difference]: Finished difference Result 1070 states and 1478 transitions. [2021-10-13 00:34:43,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:34:43,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 104 [2021-10-13 00:34:43,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:43,196 INFO L225 Difference]: With dead ends: 1070 [2021-10-13 00:34:43,196 INFO L226 Difference]: Without dead ends: 553 [2021-10-13 00:34:43,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:34:43,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-10-13 00:34:43,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2021-10-13 00:34:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 1.3804347826086956) internal successors, (762), 552 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 762 transitions. [2021-10-13 00:34:43,222 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 762 transitions. Word has length 104 [2021-10-13 00:34:43,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:43,223 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 762 transitions. [2021-10-13 00:34:43,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:43,223 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 762 transitions. [2021-10-13 00:34:43,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 00:34:43,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:43,226 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:43,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:34:43,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:43,441 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:43,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:43,442 INFO L82 PathProgramCache]: Analyzing trace with hash -53319870, now seen corresponding path program 1 times [2021-10-13 00:34:43,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:43,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412999546] [2021-10-13 00:34:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:43,443 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:43,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:43,444 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:43,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 00:34:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:43,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:34:43,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-13 00:34:44,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-13 00:34:44,426 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:44,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412999546] [2021-10-13 00:34:44,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412999546] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:44,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:44,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:34:44,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517097713] [2021-10-13 00:34:44,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:34:44,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:44,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:34:44,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:44,429 INFO L87 Difference]: Start difference. First operand 553 states and 762 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:44,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:44,547 INFO L93 Difference]: Finished difference Result 1520 states and 2113 transitions. [2021-10-13 00:34:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:34:44,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 105 [2021-10-13 00:34:44,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:44,556 INFO L225 Difference]: With dead ends: 1520 [2021-10-13 00:34:44,557 INFO L226 Difference]: Without dead ends: 1003 [2021-10-13 00:34:44,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:44,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-10-13 00:34:44,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 1003. [2021-10-13 00:34:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 1002 states have (on average 1.3892215568862276) internal successors, (1392), 1002 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1392 transitions. [2021-10-13 00:34:44,604 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1392 transitions. Word has length 105 [2021-10-13 00:34:44,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:44,605 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 1392 transitions. [2021-10-13 00:34:44,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:44,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1392 transitions. [2021-10-13 00:34:44,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-10-13 00:34:44,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:44,610 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:44,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:34:44,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:44,827 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:44,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:44,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1519363111, now seen corresponding path program 1 times [2021-10-13 00:34:44,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:44,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456347079] [2021-10-13 00:34:44,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:44,828 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:44,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:44,829 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:44,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 00:34:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:45,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:34:45,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-10-13 00:34:45,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:46,220 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-10-13 00:34:46,221 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:46,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456347079] [2021-10-13 00:34:46,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456347079] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:46,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:46,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:34:46,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138866223] [2021-10-13 00:34:46,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:34:46,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:46,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:34:46,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:46,234 INFO L87 Difference]: Start difference. First operand 1003 states and 1392 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:46,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:46,515 INFO L93 Difference]: Finished difference Result 2091 states and 2938 transitions. [2021-10-13 00:34:46,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:34:46,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 173 [2021-10-13 00:34:46,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:46,525 INFO L225 Difference]: With dead ends: 2091 [2021-10-13 00:34:46,525 INFO L226 Difference]: Without dead ends: 1124 [2021-10-13 00:34:46,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:46,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2021-10-13 00:34:46,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1095. [2021-10-13 00:34:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 1.3711151736745886) internal successors, (1500), 1094 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:46,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1500 transitions. [2021-10-13 00:34:46,575 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1500 transitions. Word has length 173 [2021-10-13 00:34:46,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:46,576 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 1500 transitions. [2021-10-13 00:34:46,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1500 transitions. [2021-10-13 00:34:46,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-10-13 00:34:46,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:46,581 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:46,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:34:46,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:46,797 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:46,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:46,798 INFO L82 PathProgramCache]: Analyzing trace with hash -759567935, now seen corresponding path program 1 times [2021-10-13 00:34:46,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:46,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268067688] [2021-10-13 00:34:46,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:46,799 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:46,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:46,801 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:46,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 00:34:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:47,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:34:47,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 456 proven. 20 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-10-13 00:34:48,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 440 proven. 36 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-10-13 00:34:48,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:48,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268067688] [2021-10-13 00:34:48,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268067688] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:34:48,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:34:48,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-13 00:34:48,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329341888] [2021-10-13 00:34:48,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:34:48,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:48,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:34:48,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:34:48,693 INFO L87 Difference]: Start difference. First operand 1095 states and 1500 transitions. Second operand has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:49,380 INFO L93 Difference]: Finished difference Result 2572 states and 3550 transitions. [2021-10-13 00:34:49,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:34:49,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 0 states have call successors, (0), 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 194 [2021-10-13 00:34:49,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:49,392 INFO L225 Difference]: With dead ends: 2572 [2021-10-13 00:34:49,392 INFO L226 Difference]: Without dead ends: 1513 [2021-10-13 00:34:49,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 62.8ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:34:49,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2021-10-13 00:34:49,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1404. [2021-10-13 00:34:49,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 1.3642195295794726) internal successors, (1914), 1403 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1914 transitions. [2021-10-13 00:34:49,463 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1914 transitions. Word has length 194 [2021-10-13 00:34:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:49,464 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 1914 transitions. [2021-10-13 00:34:49,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:49,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1914 transitions. [2021-10-13 00:34:49,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-10-13 00:34:49,471 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:49,471 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:49,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:34:49,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:49,688 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:49,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:49,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1233429647, now seen corresponding path program 1 times [2021-10-13 00:34:49,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:49,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201884812] [2021-10-13 00:34:49,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:49,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:49,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:49,691 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:49,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 00:34:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:50,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:34:50,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-10-13 00:34:50,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-10-13 00:34:51,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:51,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201884812] [2021-10-13 00:34:51,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201884812] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:51,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:51,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:34:51,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806824092] [2021-10-13 00:34:51,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:34:51,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:51,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:34:51,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:51,539 INFO L87 Difference]: Start difference. First operand 1404 states and 1914 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:51,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:51,832 INFO L93 Difference]: Finished difference Result 2921 states and 4033 transitions. [2021-10-13 00:34:51,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:34:51,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2021-10-13 00:34:51,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:51,844 INFO L225 Difference]: With dead ends: 2921 [2021-10-13 00:34:51,844 INFO L226 Difference]: Without dead ends: 1574 [2021-10-13 00:34:51,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:51,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2021-10-13 00:34:51,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1544. [2021-10-13 00:34:51,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 1.3441348023331172) internal successors, (2074), 1543 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:51,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2074 transitions. [2021-10-13 00:34:51,907 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2074 transitions. Word has length 219 [2021-10-13 00:34:51,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:51,907 INFO L470 AbstractCegarLoop]: Abstraction has 1544 states and 2074 transitions. [2021-10-13 00:34:51,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:51,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2074 transitions. [2021-10-13 00:34:51,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-10-13 00:34:51,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:51,914 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:51,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:34:52,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:52,130 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:52,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:52,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1201727504, now seen corresponding path program 1 times [2021-10-13 00:34:52,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:52,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135118021] [2021-10-13 00:34:52,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:52,132 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:52,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:52,133 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:52,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 00:34:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:52,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:34:52,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 477 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-10-13 00:34:53,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:54,199 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 477 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-10-13 00:34:54,199 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:54,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135118021] [2021-10-13 00:34:54,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135118021] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:54,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:54,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:34:54,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887081964] [2021-10-13 00:34:54,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:34:54,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:54,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:34:54,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:54,203 INFO L87 Difference]: Start difference. First operand 1544 states and 2074 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:54,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:54,483 INFO L93 Difference]: Finished difference Result 3201 states and 4369 transitions. [2021-10-13 00:34:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:34:54,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2021-10-13 00:34:54,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:54,496 INFO L225 Difference]: With dead ends: 3201 [2021-10-13 00:34:54,496 INFO L226 Difference]: Without dead ends: 1714 [2021-10-13 00:34:54,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:54,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2021-10-13 00:34:54,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1699. [2021-10-13 00:34:54,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1698 states have (on average 1.3244994110718493) internal successors, (2249), 1698 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2249 transitions. [2021-10-13 00:34:54,573 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2249 transitions. Word has length 230 [2021-10-13 00:34:54,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:54,574 INFO L470 AbstractCegarLoop]: Abstraction has 1699 states and 2249 transitions. [2021-10-13 00:34:54,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:54,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2249 transitions. [2021-10-13 00:34:54,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-10-13 00:34:54,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:54,583 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 12, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:54,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:34:54,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:54,801 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:54,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:54,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1748413006, now seen corresponding path program 1 times [2021-10-13 00:34:54,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:54,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846741997] [2021-10-13 00:34:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:54,802 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:54,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:54,804 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:54,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 00:34:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:55,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:34:55,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 563 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2021-10-13 00:34:56,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:56,545 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 563 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2021-10-13 00:34:56,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:56,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846741997] [2021-10-13 00:34:56,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846741997] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:56,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:56,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:34:56,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002282816] [2021-10-13 00:34:56,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:34:56,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:56,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:34:56,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:56,548 INFO L87 Difference]: Start difference. First operand 1699 states and 2249 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:56,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:56,769 INFO L93 Difference]: Finished difference Result 3576 states and 4804 transitions. [2021-10-13 00:34:56,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:34:56,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2021-10-13 00:34:56,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:56,782 INFO L225 Difference]: With dead ends: 3576 [2021-10-13 00:34:56,782 INFO L226 Difference]: Without dead ends: 1934 [2021-10-13 00:34:56,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:56,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2021-10-13 00:34:56,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1884. [2021-10-13 00:34:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1883 states have (on average 1.30323951141795) internal successors, (2454), 1883 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:56,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2454 transitions. [2021-10-13 00:34:56,851 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2454 transitions. Word has length 260 [2021-10-13 00:34:56,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:56,852 INFO L470 AbstractCegarLoop]: Abstraction has 1884 states and 2454 transitions. [2021-10-13 00:34:56,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:56,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2454 transitions. [2021-10-13 00:34:56,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-10-13 00:34:56,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:56,859 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:56,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:34:57,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:57,073 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:57,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:57,074 INFO L82 PathProgramCache]: Analyzing trace with hash -541056141, now seen corresponding path program 1 times [2021-10-13 00:34:57,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:57,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288172410] [2021-10-13 00:34:57,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:57,075 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:57,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:57,076 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:57,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 00:34:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:58,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:34:58,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:34:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 633 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-13 00:34:58,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:34:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 633 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-13 00:34:59,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:34:59,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288172410] [2021-10-13 00:34:59,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288172410] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:59,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:59,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:34:59,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089535302] [2021-10-13 00:34:59,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:34:59,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:34:59,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:34:59,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:59,031 INFO L87 Difference]: Start difference. First operand 1884 states and 2454 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:59,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:59,163 INFO L93 Difference]: Finished difference Result 7200 states and 9404 transitions. [2021-10-13 00:34:59,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:34:59,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 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 261 [2021-10-13 00:34:59,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:59,192 INFO L225 Difference]: With dead ends: 7200 [2021-10-13 00:34:59,192 INFO L226 Difference]: Without dead ends: 5373 [2021-10-13 00:34:59,196 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:34:59,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5373 states. [2021-10-13 00:34:59,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5373 to 5369. [2021-10-13 00:34:59,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5369 states, 5368 states have (on average 1.305327868852459) internal successors, (7007), 5368 states have internal predecessors, (7007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:59,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5369 states to 5369 states and 7007 transitions. [2021-10-13 00:34:59,430 INFO L78 Accepts]: Start accepts. Automaton has 5369 states and 7007 transitions. Word has length 261 [2021-10-13 00:34:59,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:59,431 INFO L470 AbstractCegarLoop]: Abstraction has 5369 states and 7007 transitions. [2021-10-13 00:34:59,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:34:59,431 INFO L276 IsEmpty]: Start isEmpty. Operand 5369 states and 7007 transitions. [2021-10-13 00:34:59,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-10-13 00:34:59,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:59,451 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:59,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-13 00:34:59,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:34:59,664 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:34:59,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:59,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1252386761, now seen corresponding path program 1 times [2021-10-13 00:34:59,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:34:59,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295685530] [2021-10-13 00:34:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:59,666 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:34:59,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:34:59,667 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:34:59,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 00:35:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:00,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:35:00,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:35:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 652 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2021-10-13 00:35:01,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:35:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 652 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2021-10-13 00:35:01,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:35:01,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295685530] [2021-10-13 00:35:01,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295685530] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:01,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:01,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:35:01,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473964665] [2021-10-13 00:35:01,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:35:01,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:35:01,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:35:01,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:35:01,757 INFO L87 Difference]: Start difference. First operand 5369 states and 7007 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:02,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:02,068 INFO L93 Difference]: Finished difference Result 10996 states and 14405 transitions. [2021-10-13 00:35:02,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:35:02,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 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 285 [2021-10-13 00:35:02,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:02,098 INFO L225 Difference]: With dead ends: 10996 [2021-10-13 00:35:02,098 INFO L226 Difference]: Without dead ends: 5684 [2021-10-13 00:35:02,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:35:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5684 states. [2021-10-13 00:35:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5684 to 5534. [2021-10-13 00:35:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5534 states, 5533 states have (on average 1.2980300018073379) internal successors, (7182), 5533 states have internal predecessors, (7182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5534 states to 5534 states and 7182 transitions. [2021-10-13 00:35:02,435 INFO L78 Accepts]: Start accepts. Automaton has 5534 states and 7182 transitions. Word has length 285 [2021-10-13 00:35:02,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:02,436 INFO L470 AbstractCegarLoop]: Abstraction has 5534 states and 7182 transitions. [2021-10-13 00:35:02,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:02,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5534 states and 7182 transitions. [2021-10-13 00:35:02,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-10-13 00:35:02,449 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:02,450 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:35:02,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-13 00:35:02,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:35:02,664 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:35:02,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:02,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1370167796, now seen corresponding path program 1 times [2021-10-13 00:35:02,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:35:02,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474403972] [2021-10-13 00:35:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:02,666 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:35:02,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:35:02,667 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:35:02,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 00:35:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:03,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:35:03,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:35:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 665 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2021-10-13 00:35:04,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:35:04,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 665 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2021-10-13 00:35:04,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:35:04,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474403972] [2021-10-13 00:35:04,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474403972] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:04,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:04,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:35:04,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855390001] [2021-10-13 00:35:04,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:35:04,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:35:04,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:35:04,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:35:04,753 INFO L87 Difference]: Start difference. First operand 5534 states and 7182 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:05,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:05,060 INFO L93 Difference]: Finished difference Result 11716 states and 15430 transitions. [2021-10-13 00:35:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:35:05,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 297 [2021-10-13 00:35:05,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:05,093 INFO L225 Difference]: With dead ends: 11716 [2021-10-13 00:35:05,093 INFO L226 Difference]: Without dead ends: 6239 [2021-10-13 00:35:05,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:35:05,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6239 states. [2021-10-13 00:35:05,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6239 to 6089. [2021-10-13 00:35:05,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6089 states, 6088 states have (on average 1.2807161629434953) internal successors, (7797), 6088 states have internal predecessors, (7797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6089 states to 6089 states and 7797 transitions. [2021-10-13 00:35:05,333 INFO L78 Accepts]: Start accepts. Automaton has 6089 states and 7797 transitions. Word has length 297 [2021-10-13 00:35:05,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:05,334 INFO L470 AbstractCegarLoop]: Abstraction has 6089 states and 7797 transitions. [2021-10-13 00:35:05,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 6089 states and 7797 transitions. [2021-10-13 00:35:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-10-13 00:35:05,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:05,350 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:35:05,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:35:05,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:35:05,567 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:35:05,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:05,568 INFO L82 PathProgramCache]: Analyzing trace with hash 814591708, now seen corresponding path program 1 times [2021-10-13 00:35:05,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:35:05,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653375965] [2021-10-13 00:35:05,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:05,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:35:05,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:35:05,571 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:35:05,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 00:35:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:06,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:35:06,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:35:07,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1446 backedges. 757 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2021-10-13 00:35:07,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:35:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1446 backedges. 757 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2021-10-13 00:35:07,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:35:07,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653375965] [2021-10-13 00:35:07,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653375965] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:07,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:07,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:35:07,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819813228] [2021-10-13 00:35:07,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:35:07,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:35:07,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:35:07,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:35:07,958 INFO L87 Difference]: Start difference. First operand 6089 states and 7797 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:08,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:08,413 INFO L93 Difference]: Finished difference Result 12871 states and 16735 transitions. [2021-10-13 00:35:08,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:35:08,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 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 334 [2021-10-13 00:35:08,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:08,434 INFO L225 Difference]: With dead ends: 12871 [2021-10-13 00:35:08,435 INFO L226 Difference]: Without dead ends: 6839 [2021-10-13 00:35:08,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 664 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:35:08,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6839 states. [2021-10-13 00:35:08,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6839 to 6704. [2021-10-13 00:35:08,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6704 states, 6703 states have (on average 1.2639116813367148) internal successors, (8472), 6703 states have internal predecessors, (8472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:08,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6704 states to 6704 states and 8472 transitions. [2021-10-13 00:35:08,691 INFO L78 Accepts]: Start accepts. Automaton has 6704 states and 8472 transitions. Word has length 334 [2021-10-13 00:35:08,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:08,692 INFO L470 AbstractCegarLoop]: Abstraction has 6704 states and 8472 transitions. [2021-10-13 00:35:08,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:08,692 INFO L276 IsEmpty]: Start isEmpty. Operand 6704 states and 8472 transitions. [2021-10-13 00:35:08,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2021-10-13 00:35:08,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:08,709 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:35:08,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:35:08,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:35:08,928 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:35:08,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:08,929 INFO L82 PathProgramCache]: Analyzing trace with hash 562644076, now seen corresponding path program 1 times [2021-10-13 00:35:08,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:35:08,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613147165] [2021-10-13 00:35:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:08,930 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:35:08,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:35:08,931 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:35:08,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 00:35:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:10,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:35:10,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:35:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1562 backedges. 903 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2021-10-13 00:35:10,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:35:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1562 backedges. 903 proven. 10 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2021-10-13 00:35:11,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:35:11,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613147165] [2021-10-13 00:35:11,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613147165] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:35:11,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:35:11,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-13 00:35:11,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756829293] [2021-10-13 00:35:11,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:35:11,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:35:11,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:35:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:35:11,585 INFO L87 Difference]: Start difference. First operand 6704 states and 8472 transitions. Second operand has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:12,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:12,589 INFO L93 Difference]: Finished difference Result 21875 states and 27687 transitions. [2021-10-13 00:35:12,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:35:12,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 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 357 [2021-10-13 00:35:12,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:12,623 INFO L225 Difference]: With dead ends: 21875 [2021-10-13 00:35:12,623 INFO L226 Difference]: Without dead ends: 15228 [2021-10-13 00:35:12,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:35:12,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15228 states. [2021-10-13 00:35:12,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15228 to 9232. [2021-10-13 00:35:12,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9232 states, 9231 states have (on average 1.2807929801754956) internal successors, (11823), 9231 states have internal predecessors, (11823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9232 states to 9232 states and 11823 transitions. [2021-10-13 00:35:13,018 INFO L78 Accepts]: Start accepts. Automaton has 9232 states and 11823 transitions. Word has length 357 [2021-10-13 00:35:13,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:13,019 INFO L470 AbstractCegarLoop]: Abstraction has 9232 states and 11823 transitions. [2021-10-13 00:35:13,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:13,020 INFO L276 IsEmpty]: Start isEmpty. Operand 9232 states and 11823 transitions. [2021-10-13 00:35:13,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2021-10-13 00:35:13,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:13,046 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 14, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:35:13,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:35:13,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:35:13,267 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:35:13,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:13,268 INFO L82 PathProgramCache]: Analyzing trace with hash 78805813, now seen corresponding path program 1 times [2021-10-13 00:35:13,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:35:13,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992190322] [2021-10-13 00:35:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:13,269 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:35:13,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:35:13,270 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:35:13,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 00:35:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:14,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:35:14,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:35:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 928 proven. 0 refuted. 0 times theorem prover too weak. 647 trivial. 0 not checked. [2021-10-13 00:35:15,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:35:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 928 proven. 0 refuted. 0 times theorem prover too weak. 647 trivial. 0 not checked. [2021-10-13 00:35:16,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:35:16,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992190322] [2021-10-13 00:35:16,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992190322] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:16,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:16,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:35:16,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397296103] [2021-10-13 00:35:16,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:35:16,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:35:16,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:35:16,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:35:16,252 INFO L87 Difference]: Start difference. First operand 9232 states and 11823 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:16,494 INFO L93 Difference]: Finished difference Result 19629 states and 24779 transitions. [2021-10-13 00:35:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:35:16,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 359 [2021-10-13 00:35:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:16,517 INFO L225 Difference]: With dead ends: 19629 [2021-10-13 00:35:16,517 INFO L226 Difference]: Without dead ends: 10454 [2021-10-13 00:35:16,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:35:16,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10454 states. [2021-10-13 00:35:16,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10454 to 10024. [2021-10-13 00:35:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10024 states, 10023 states have (on average 1.2466327446872194) internal successors, (12495), 10023 states have internal predecessors, (12495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10024 states to 10024 states and 12495 transitions. [2021-10-13 00:35:16,925 INFO L78 Accepts]: Start accepts. Automaton has 10024 states and 12495 transitions. Word has length 359 [2021-10-13 00:35:16,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:16,926 INFO L470 AbstractCegarLoop]: Abstraction has 10024 states and 12495 transitions. [2021-10-13 00:35:16,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 10024 states and 12495 transitions. [2021-10-13 00:35:16,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2021-10-13 00:35:16,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:16,956 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 15, 14, 12, 12, 11, 11, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:35:16,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:35:17,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:35:17,172 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:35:17,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:17,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1396739116, now seen corresponding path program 1 times [2021-10-13 00:35:17,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:35:17,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919742574] [2021-10-13 00:35:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:17,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:35:17,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:35:17,174 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:35:17,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 00:35:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:18,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:35:18,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:35:19,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2061 backedges. 1034 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2021-10-13 00:35:19,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:35:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2061 backedges. 1034 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2021-10-13 00:35:21,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:35:21,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919742574] [2021-10-13 00:35:21,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919742574] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:21,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:21,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:35:21,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629540132] [2021-10-13 00:35:21,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:35:21,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:35:21,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:35:21,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:35:21,031 INFO L87 Difference]: Start difference. First operand 10024 states and 12495 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:21,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:21,192 INFO L93 Difference]: Finished difference Result 15258 states and 19066 transitions. [2021-10-13 00:35:21,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:35:21,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 434 [2021-10-13 00:35:21,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:21,205 INFO L225 Difference]: With dead ends: 15258 [2021-10-13 00:35:21,205 INFO L226 Difference]: Without dead ends: 6496 [2021-10-13 00:35:21,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 865 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:35:21,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6496 states. [2021-10-13 00:35:21,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6496 to 6494. [2021-10-13 00:35:21,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6494 states, 6493 states have (on average 1.2590482057600494) internal successors, (8175), 6493 states have internal predecessors, (8175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6494 states to 6494 states and 8175 transitions. [2021-10-13 00:35:21,520 INFO L78 Accepts]: Start accepts. Automaton has 6494 states and 8175 transitions. Word has length 434 [2021-10-13 00:35:21,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:21,520 INFO L470 AbstractCegarLoop]: Abstraction has 6494 states and 8175 transitions. [2021-10-13 00:35:21,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:21,520 INFO L276 IsEmpty]: Start isEmpty. Operand 6494 states and 8175 transitions. [2021-10-13 00:35:21,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2021-10-13 00:35:21,538 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:21,539 INFO L512 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 19, 18, 17, 15, 15, 14, 14, 13, 13, 12, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:35:21,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 00:35:21,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:35:21,763 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:35:21,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:21,764 INFO L82 PathProgramCache]: Analyzing trace with hash -839302048, now seen corresponding path program 1 times [2021-10-13 00:35:21,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:35:21,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86536520] [2021-10-13 00:35:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:21,765 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:35:21,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:35:21,767 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:35:21,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 00:35:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:23,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:35:23,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:35:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3220 backedges. 1527 proven. 0 refuted. 0 times theorem prover too weak. 1693 trivial. 0 not checked. [2021-10-13 00:35:24,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:35:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3220 backedges. 1527 proven. 0 refuted. 0 times theorem prover too weak. 1693 trivial. 0 not checked. [2021-10-13 00:35:25,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:35:25,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86536520] [2021-10-13 00:35:25,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86536520] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:25,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:25,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:35:25,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145732385] [2021-10-13 00:35:25,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:35:25,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:35:25,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:35:25,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:35:25,892 INFO L87 Difference]: Start difference. First operand 6494 states and 8175 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:26,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:26,197 INFO L93 Difference]: Finished difference Result 13252 states and 16870 transitions. [2021-10-13 00:35:26,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:35:26,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 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 544 [2021-10-13 00:35:26,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:26,209 INFO L225 Difference]: With dead ends: 13252 [2021-10-13 00:35:26,210 INFO L226 Difference]: Without dead ends: 6185 [2021-10-13 00:35:26,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1086 GetRequests, 1084 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:35:26,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6185 states. [2021-10-13 00:35:26,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6185 to 6134. [2021-10-13 00:35:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6134 states, 6133 states have (on average 1.2449046143812164) internal successors, (7635), 6133 states have internal predecessors, (7635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:26,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6134 states to 6134 states and 7635 transitions. [2021-10-13 00:35:26,411 INFO L78 Accepts]: Start accepts. Automaton has 6134 states and 7635 transitions. Word has length 544 [2021-10-13 00:35:26,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:26,412 INFO L470 AbstractCegarLoop]: Abstraction has 6134 states and 7635 transitions. [2021-10-13 00:35:26,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:26,412 INFO L276 IsEmpty]: Start isEmpty. Operand 6134 states and 7635 transitions. [2021-10-13 00:35:26,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2021-10-13 00:35:26,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:26,428 INFO L512 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 20, 19, 17, 17, 16, 16, 15, 15, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:35:26,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 00:35:26,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:35:26,644 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:35:26,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:26,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1723660819, now seen corresponding path program 1 times [2021-10-13 00:35:26,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:35:26,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962479525] [2021-10-13 00:35:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:26,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:35:26,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:35:26,648 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:35:26,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 00:35:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:28,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:35:28,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:35:30,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4151 backedges. 2135 proven. 14 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2021-10-13 00:35:30,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:35:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4151 backedges. 2135 proven. 14 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2021-10-13 00:35:31,219 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:35:31,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962479525] [2021-10-13 00:35:31,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962479525] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:35:31,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:35:31,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-13 00:35:31,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960680382] [2021-10-13 00:35:31,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:35:31,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:35:31,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:35:31,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:35:31,222 INFO L87 Difference]: Start difference. First operand 6134 states and 7635 transitions. Second operand has 6 states, 6 states have (on average 45.5) internal successors, (273), 6 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:31,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:31,462 INFO L93 Difference]: Finished difference Result 6347 states and 7905 transitions. [2021-10-13 00:35:31,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:35:31,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 45.5) internal successors, (273), 6 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 619 [2021-10-13 00:35:31,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:31,463 INFO L225 Difference]: With dead ends: 6347 [2021-10-13 00:35:31,463 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:35:31,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1240 GetRequests, 1234 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.7ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:35:31,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:35:31,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:35:31,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:31,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:35:31,468 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 619 [2021-10-13 00:35:31,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:31,468 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:35:31,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.5) internal successors, (273), 6 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:35:31,468 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:35:31,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:35:31,470 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:35:31,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 00:35:31,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:35:31,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:35:31,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:31,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:31,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:32,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:33,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:33,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:33,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:33,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:35:36,744 INFO L853 garLoopResultBuilder]: At program point L135(lines 131 556) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) [2021-10-13 00:35:36,744 INFO L853 garLoopResultBuilder]: At program point L532(lines 95 598) the Hoare annotation is: (let ((.cse7 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)))) (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (.cse4 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv3 32))) (.cse1 (not (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4368 32)))) (.cse11 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (.cse12 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4528 32))) (.cse2 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0)) (.cse3 (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (.cse8 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0))) (.cse6 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (.cse10 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (.cse9 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4512 32))) (.cse5 (not .cse7))) (or (and .cse0 (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse2 .cse3 .cse7 .cse8 .cse9 .cse6) (and .cse10 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4560 32)) .cse5) (and .cse2 .cse3 (= (_ bv4464 32) ULTIMATE.start_ssl3_connect_~s__state~0) .cse7 .cse8 .cse6) (and .cse2 .cse3 .cse7 .cse8 (= (_ bv4480 32) ULTIMATE.start_ssl3_connect_~s__state~0) .cse6) (and (not .cse0) .cse2 .cse3 .cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) .cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) .cse6) (and .cse2 .cse7 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4416 32)) .cse8) (and .cse1 .cse10 .cse4 .cse5) (and .cse1 .cse2 .cse3 .cse7 .cse11 .cse8 .cse6) (and .cse2 .cse3 .cse7 (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0) .cse8 .cse6) (and .cse2 .cse3 .cse7 .cse12 .cse8 .cse6) (and .cse10 .cse7 .cse11) (and .cse2 .cse3 .cse7 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4448 32)) .cse8 .cse6) (and (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv3 32)) .cse10 .cse5 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4352 32))) (and .cse10 .cse12 .cse5) (and (= (_ bv1 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4384 32))) (and .cse2 .cse3 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4496 32)) .cse7 .cse8 .cse6) (and .cse10 .cse9 .cse5)))) [2021-10-13 00:35:36,744 INFO L860 garLoopResultBuilder]: At program point L599(lines 94 600) the Hoare annotation is: true [2021-10-13 00:35:36,744 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 543) no Hoare annotation was computed. [2021-10-13 00:35:36,745 INFO L857 garLoopResultBuilder]: For program point L137(lines 137 554) no Hoare annotation was computed. [2021-10-13 00:35:36,745 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 565) no Hoare annotation was computed. [2021-10-13 00:35:36,745 INFO L857 garLoopResultBuilder]: For program point L369(lines 369 373) no Hoare annotation was computed. [2021-10-13 00:35:36,745 INFO L857 garLoopResultBuilder]: For program point L369-2(lines 369 373) no Hoare annotation was computed. [2021-10-13 00:35:36,747 INFO L857 garLoopResultBuilder]: For program point L303-1(lines 303 317) no Hoare annotation was computed. [2021-10-13 00:35:36,747 INFO L853 garLoopResultBuilder]: At program point L204(lines 101 566) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) [2021-10-13 00:35:36,748 INFO L853 garLoopResultBuilder]: At program point L171(lines 167 544) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) [2021-10-13 00:35:36,748 INFO L857 garLoopResultBuilder]: For program point L568(lines 568 596) no Hoare annotation was computed. [2021-10-13 00:35:36,748 INFO L857 garLoopResultBuilder]: For program point L569(lines 569 593) no Hoare annotation was computed. [2021-10-13 00:35:36,748 INFO L857 garLoopResultBuilder]: For program point L503-1(lines 199 531) no Hoare annotation was computed. [2021-10-13 00:35:36,749 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 343) no Hoare annotation was computed. [2021-10-13 00:35:36,749 INFO L857 garLoopResultBuilder]: For program point L173(lines 173 542) no Hoare annotation was computed. [2021-10-13 00:35:36,749 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 553) no Hoare annotation was computed. [2021-10-13 00:35:36,750 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 564) no Hoare annotation was computed. [2021-10-13 00:35:36,750 INFO L857 garLoopResultBuilder]: For program point L603(lines 603 607) no Hoare annotation was computed. [2021-10-13 00:35:36,750 INFO L857 garLoopResultBuilder]: For program point L570(lines 570 579) no Hoare annotation was computed. [2021-10-13 00:35:36,750 INFO L857 garLoopResultBuilder]: For program point L603-2(lines 603 607) no Hoare annotation was computed. [2021-10-13 00:35:36,751 INFO L857 garLoopResultBuilder]: For program point L570-2(lines 569 591) no Hoare annotation was computed. [2021-10-13 00:35:36,751 INFO L853 garLoopResultBuilder]: At program point L141(lines 137 554) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) [2021-10-13 00:35:36,753 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 83) no Hoare annotation was computed. [2021-10-13 00:35:36,753 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 311) no Hoare annotation was computed. [2021-10-13 00:35:36,753 INFO L857 garLoopResultBuilder]: For program point L307-2(lines 305 317) no Hoare annotation was computed. [2021-10-13 00:35:36,753 INFO L857 garLoopResultBuilder]: For program point L572(lines 572 576) no Hoare annotation was computed. [2021-10-13 00:35:36,754 INFO L857 garLoopResultBuilder]: For program point L440(lines 440 445) no Hoare annotation was computed. [2021-10-13 00:35:36,754 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 279) no Hoare annotation was computed. [2021-10-13 00:35:36,754 INFO L857 garLoopResultBuilder]: For program point L209(lines 209 213) no Hoare annotation was computed. [2021-10-13 00:35:36,754 INFO L857 garLoopResultBuilder]: For program point L176(lines 176 541) no Hoare annotation was computed. [2021-10-13 00:35:36,754 INFO L857 garLoopResultBuilder]: For program point L143(lines 143 552) no Hoare annotation was computed. [2021-10-13 00:35:36,755 INFO L857 garLoopResultBuilder]: For program point L209-2(lines 199 531) no Hoare annotation was computed. [2021-10-13 00:35:36,755 INFO L857 garLoopResultBuilder]: For program point L110(lines 110 563) no Hoare annotation was computed. [2021-10-13 00:35:36,755 INFO L857 garLoopResultBuilder]: For program point L474(lines 474 478) no Hoare annotation was computed. [2021-10-13 00:35:36,756 INFO L853 garLoopResultBuilder]: At program point L177(lines 173 542) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))))) (or (and .cse0 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 .cse2 .cse3 .cse4 .cse5 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse6 .cse7 .cse8 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse3 .cse4 .cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse6 .cse7 (not .cse2) .cse8))) [2021-10-13 00:35:36,756 INFO L857 garLoopResultBuilder]: For program point L78(lines 78 82) no Hoare annotation was computed. [2021-10-13 00:35:36,757 INFO L857 garLoopResultBuilder]: For program point L78-2(lines 75 83) no Hoare annotation was computed. [2021-10-13 00:35:36,757 INFO L857 garLoopResultBuilder]: For program point L508-1(lines 508 512) no Hoare annotation was computed. [2021-10-13 00:35:36,757 INFO L857 garLoopResultBuilder]: For program point L409(lines 409 413) no Hoare annotation was computed. [2021-10-13 00:35:36,758 INFO L857 garLoopResultBuilder]: For program point L245(lines 245 250) no Hoare annotation was computed. [2021-10-13 00:35:36,759 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 540) no Hoare annotation was computed. [2021-10-13 00:35:36,759 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 551) no Hoare annotation was computed. [2021-10-13 00:35:36,759 INFO L857 garLoopResultBuilder]: For program point L113(lines 113 562) no Hoare annotation was computed. [2021-10-13 00:35:36,759 INFO L853 garLoopResultBuilder]: At program point L147(lines 143 552) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) [2021-10-13 00:35:36,760 INFO L857 garLoopResultBuilder]: For program point L479(lines 479 483) no Hoare annotation was computed. [2021-10-13 00:35:36,760 INFO L857 garLoopResultBuilder]: For program point L479-2(lines 479 483) no Hoare annotation was computed. [2021-10-13 00:35:36,760 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 539) no Hoare annotation was computed. [2021-10-13 00:35:36,760 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 550) no Hoare annotation was computed. [2021-10-13 00:35:36,760 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 561) no Hoare annotation was computed. [2021-10-13 00:35:36,760 INFO L857 garLoopResultBuilder]: For program point L381(lines 381 385) no Hoare annotation was computed. [2021-10-13 00:35:36,761 INFO L857 garLoopResultBuilder]: For program point L348(lines 348 352) no Hoare annotation was computed. [2021-10-13 00:35:36,761 INFO L853 garLoopResultBuilder]: At program point L183(lines 179 540) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))))) (or (and .cse0 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 .cse2 .cse3 .cse4 .cse5 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse6 .cse7 .cse8 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse3 .cse4 .cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse6 .cse7 (not .cse2) .cse8))) [2021-10-13 00:35:36,761 INFO L853 garLoopResultBuilder]: At program point L117(lines 113 562) the Hoare annotation is: (and (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32)))) [2021-10-13 00:35:36,761 INFO L853 garLoopResultBuilder]: At program point L349(lines 67 616) the Hoare annotation is: false [2021-10-13 00:35:36,762 INFO L857 garLoopResultBuilder]: For program point L85(lines 85 93) no Hoare annotation was computed. [2021-10-13 00:35:36,762 INFO L860 garLoopResultBuilder]: At program point L614(lines 67 616) the Hoare annotation is: true [2021-10-13 00:35:36,762 INFO L857 garLoopResultBuilder]: For program point L581(lines 581 587) no Hoare annotation was computed. [2021-10-13 00:35:36,762 INFO L857 garLoopResultBuilder]: For program point L515(lines 515 519) no Hoare annotation was computed. [2021-10-13 00:35:36,762 INFO L857 garLoopResultBuilder]: For program point L515-2(lines 515 519) no Hoare annotation was computed. [2021-10-13 00:35:36,763 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:35:36,763 INFO L857 garLoopResultBuilder]: For program point L284(lines 284 288) no Hoare annotation was computed. [2021-10-13 00:35:36,763 INFO L857 garLoopResultBuilder]: For program point L284-2(lines 199 531) no Hoare annotation was computed. [2021-10-13 00:35:36,763 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 538) no Hoare annotation was computed. [2021-10-13 00:35:36,763 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 549) no Hoare annotation was computed. [2021-10-13 00:35:36,763 INFO L857 garLoopResultBuilder]: For program point L119(lines 119 560) no Hoare annotation was computed. [2021-10-13 00:35:36,764 INFO L857 garLoopResultBuilder]: For program point L86(lines 86 90) no Hoare annotation was computed. [2021-10-13 00:35:36,764 INFO L860 garLoopResultBuilder]: At program point L615(lines 10 617) the Hoare annotation is: true [2021-10-13 00:35:36,764 INFO L857 garLoopResultBuilder]: For program point L450(lines 450 454) no Hoare annotation was computed. [2021-10-13 00:35:36,764 INFO L857 garLoopResultBuilder]: For program point L353(lines 353 357) no Hoare annotation was computed. [2021-10-13 00:35:36,764 INFO L857 garLoopResultBuilder]: For program point L221(lines 221 238) no Hoare annotation was computed. [2021-10-13 00:35:36,764 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 537) no Hoare annotation was computed. [2021-10-13 00:35:36,765 INFO L857 garLoopResultBuilder]: For program point L155(lines 155 548) no Hoare annotation was computed. [2021-10-13 00:35:36,765 INFO L857 garLoopResultBuilder]: For program point L221-2(lines 199 531) no Hoare annotation was computed. [2021-10-13 00:35:36,765 INFO L857 garLoopResultBuilder]: For program point L122(lines 122 559) no Hoare annotation was computed. [2021-10-13 00:35:36,766 INFO L853 garLoopResultBuilder]: At program point L189(lines 185 538) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))))) (or (and .cse0 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 .cse2 .cse3 .cse4 .cse5 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse6 .cse7 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32)) .cse8 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse3 .cse4 .cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse6 .cse7 (not .cse2) .cse8))) [2021-10-13 00:35:36,766 INFO L853 garLoopResultBuilder]: At program point L123(lines 119 560) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))))) (or (and .cse0 (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) .cse2 .cse3 .cse4 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse5 .cse6 (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32)) .cse7 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4400 32))) .cse5 (= (_ bv1 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse6 .cse7))) [2021-10-13 00:35:36,766 INFO L857 garLoopResultBuilder]: For program point L487-1(lines 487 499) no Hoare annotation was computed. [2021-10-13 00:35:36,766 INFO L857 garLoopResultBuilder]: For program point L421(lines 421 425) no Hoare annotation was computed. [2021-10-13 00:35:36,767 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:35:36,767 INFO L857 garLoopResultBuilder]: For program point L223(lines 223 228) no Hoare annotation was computed. [2021-10-13 00:35:36,767 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 536) no Hoare annotation was computed. [2021-10-13 00:35:36,767 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 547) no Hoare annotation was computed. [2021-10-13 00:35:36,767 INFO L857 garLoopResultBuilder]: For program point L125(lines 125 558) no Hoare annotation was computed. [2021-10-13 00:35:36,767 INFO L857 garLoopResultBuilder]: For program point L522(lines 522 526) no Hoare annotation was computed. [2021-10-13 00:35:36,768 INFO L853 garLoopResultBuilder]: At program point L192(lines 191 536) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse1 (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4352 32)))) (or (and (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse0 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4560 32)) .cse1 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (and (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv3 32)) (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (not .cse0) .cse1))) [2021-10-13 00:35:36,768 INFO L853 garLoopResultBuilder]: At program point L159(lines 149 550) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) [2021-10-13 00:35:36,768 INFO L857 garLoopResultBuilder]: For program point L490(lines 490 495) no Hoare annotation was computed. [2021-10-13 00:35:36,769 INFO L857 garLoopResultBuilder]: For program point L457(lines 457 468) no Hoare annotation was computed. [2021-10-13 00:35:36,769 INFO L857 garLoopResultBuilder]: For program point L457-1(lines 457 468) no Hoare annotation was computed. [2021-10-13 00:35:36,769 INFO L857 garLoopResultBuilder]: For program point L325(lines 325 329) no Hoare annotation was computed. [2021-10-13 00:35:36,770 INFO L857 garLoopResultBuilder]: For program point L259(lines 259 267) no Hoare annotation was computed. [2021-10-13 00:35:36,770 INFO L857 garLoopResultBuilder]: For program point L325-2(lines 199 531) no Hoare annotation was computed. [2021-10-13 00:35:36,770 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:35:36,770 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 396) no Hoare annotation was computed. [2021-10-13 00:35:36,770 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 535) no Hoare annotation was computed. [2021-10-13 00:35:36,770 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 546) no Hoare annotation was computed. [2021-10-13 00:35:36,771 INFO L857 garLoopResultBuilder]: For program point L128(lines 128 557) no Hoare annotation was computed. [2021-10-13 00:35:36,771 INFO L857 garLoopResultBuilder]: For program point L95-1(lines 67 616) no Hoare annotation was computed. [2021-10-13 00:35:36,771 INFO L857 garLoopResultBuilder]: For program point L459(lines 459 465) no Hoare annotation was computed. [2021-10-13 00:35:36,771 INFO L857 garLoopResultBuilder]: For program point L294(lines 294 298) no Hoare annotation was computed. [2021-10-13 00:35:36,771 INFO L857 garLoopResultBuilder]: For program point L294-2(lines 294 298) no Hoare annotation was computed. [2021-10-13 00:35:36,772 INFO L860 garLoopResultBuilder]: At program point L195(lines 194 535) the Hoare annotation is: true [2021-10-13 00:35:36,772 INFO L853 garLoopResultBuilder]: At program point L129(lines 125 558) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32)))) (.cse1 (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0))) (.cse2 (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32))) (.cse3 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32)))) (.cse4 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32)))) (.cse5 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32)))) (.cse6 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32)))) (.cse7 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32)))) (.cse8 (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0 (_ bv4368 32))) (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse1 .cse2 .cse3 .cse4 .cse5 (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) .cse6 .cse7 .cse8 (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) (and .cse0 (= (_ bv2 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8))) [2021-10-13 00:35:36,772 INFO L857 garLoopResultBuilder]: For program point L96(line 96) no Hoare annotation was computed. [2021-10-13 00:35:36,772 INFO L857 garLoopResultBuilder]: For program point L262(lines 262 266) no Hoare annotation was computed. [2021-10-13 00:35:36,772 INFO L857 garLoopResultBuilder]: For program point L229(lines 229 234) no Hoare annotation was computed. [2021-10-13 00:35:36,772 INFO L857 garLoopResultBuilder]: For program point L262-2(lines 199 531) no Hoare annotation was computed. [2021-10-13 00:35:36,773 INFO L860 garLoopResultBuilder]: At program point L626(lines 618 628) the Hoare annotation is: true [2021-10-13 00:35:36,773 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 545) no Hoare annotation was computed. [2021-10-13 00:35:36,773 INFO L857 garLoopResultBuilder]: For program point L131(lines 131 556) no Hoare annotation was computed. [2021-10-13 00:35:36,773 INFO L857 garLoopResultBuilder]: For program point L98(lines 98 567) no Hoare annotation was computed. [2021-10-13 00:35:36,773 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:35:36,774 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 610) no Hoare annotation was computed. [2021-10-13 00:35:36,774 INFO L857 garLoopResultBuilder]: For program point L429(lines 429 433) no Hoare annotation was computed. [2021-10-13 00:35:36,774 INFO L857 garLoopResultBuilder]: For program point L429-2(lines 199 531) no Hoare annotation was computed. [2021-10-13 00:35:36,774 INFO L860 garLoopResultBuilder]: At program point L198(lines 197 534) the Hoare annotation is: true [2021-10-13 00:35:36,774 INFO L853 garLoopResultBuilder]: At program point L165(lines 161 546) the Hoare annotation is: (and (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4368 32))) (= (_ bv61087 32) ULTIMATE.start_ssl3_connect_~ag_Y~0) (not (= (_ bv3 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= (_ bv4432 32) ULTIMATE.start_ssl3_connect_~s__state~0)) (= ULTIMATE.start_ssl3_connect_~s__hit~0 (_ bv0 32)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4096 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv20480 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) (not (= (_ bv5 32) ULTIMATE.start_ssl3_connect_~blastFlag~0)) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4369 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv16384 32))) (not (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv4099 32))) (= (_ bv65535 32) ULTIMATE.start_ssl3_connect_~ag_X~0)) [2021-10-13 00:35:36,775 INFO L853 garLoopResultBuilder]: At program point L99(lines 98 567) the Hoare annotation is: (and (= (_ bv0 32) ULTIMATE.start_ssl3_connect_~blastFlag~0) (= ULTIMATE.start_ssl3_connect_~s__state~0 (_ bv12292 32))) [2021-10-13 00:35:36,775 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 368) no Hoare annotation was computed. [2021-10-13 00:35:36,775 INFO L857 garLoopResultBuilder]: For program point L398(lines 398 403) no Hoare annotation was computed. [2021-10-13 00:35:36,775 INFO L857 garLoopResultBuilder]: For program point L398-2(lines 398 403) no Hoare annotation was computed. [2021-10-13 00:35:36,775 INFO L857 garLoopResultBuilder]: For program point L167(lines 167 544) no Hoare annotation was computed. [2021-10-13 00:35:36,775 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 555) no Hoare annotation was computed. [2021-10-13 00:35:36,776 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 566) no Hoare annotation was computed. [2021-10-13 00:35:36,781 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:35:36,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:35:36 BoogieIcfgContainer [2021-10-13 00:35:36,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:35:36,846 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:35:36,846 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:35:36,846 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:35:36,847 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:34:33" (3/4) ... [2021-10-13 00:35:36,850 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:35:36,877 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 00:35:36,878 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:35:36,879 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:35:36,880 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:35:36,971 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:35:36,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:35:36,973 INFO L168 Benchmark]: Toolchain (without parser) took 65422.70 ms. Allocated memory was 65.0 MB in the beginning and 679.5 MB in the end (delta: 614.5 MB). Free memory was 43.7 MB in the beginning and 335.9 MB in the end (delta: -292.2 MB). Peak memory consumption was 320.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:35:36,974 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 65.0 MB. Free memory is still 44.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:35:36,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.94 ms. Allocated memory is still 65.0 MB. Free memory was 43.5 MB in the beginning and 45.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:35:36,974 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.01 ms. Allocated memory is still 65.0 MB. Free memory was 45.8 MB in the beginning and 43.4 MB in the end (delta: 2.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:35:36,975 INFO L168 Benchmark]: Boogie Preprocessor took 105.69 ms. Allocated memory is still 65.0 MB. Free memory was 43.1 MB in the beginning and 41.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:35:36,975 INFO L168 Benchmark]: RCFGBuilder took 812.08 ms. Allocated memory is still 65.0 MB. Free memory was 41.1 MB in the beginning and 40.7 MB in the end (delta: 413.3 kB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:35:36,976 INFO L168 Benchmark]: TraceAbstraction took 63803.85 ms. Allocated memory was 65.0 MB in the beginning and 679.5 MB in the end (delta: 614.5 MB). Free memory was 40.4 MB in the beginning and 345.3 MB in the end (delta: -304.9 MB). Peak memory consumption was 503.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:35:36,976 INFO L168 Benchmark]: Witness Printer took 125.49 ms. Allocated memory is still 679.5 MB. Free memory was 345.3 MB in the beginning and 335.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:35:36,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 65.0 MB. Free memory is still 44.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 478.94 ms. Allocated memory is still 65.0 MB. Free memory was 43.5 MB in the beginning and 45.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.01 ms. Allocated memory is still 65.0 MB. Free memory was 45.8 MB in the beginning and 43.4 MB in the end (delta: 2.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 105.69 ms. Allocated memory is still 65.0 MB. Free memory was 43.1 MB in the beginning and 41.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 812.08 ms. Allocated memory is still 65.0 MB. Free memory was 41.1 MB in the beginning and 40.7 MB in the end (delta: 413.3 kB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 63803.85 ms. Allocated memory was 65.0 MB in the beginning and 679.5 MB in the end (delta: 614.5 MB). Free memory was 40.4 MB in the beginning and 345.3 MB in the end (delta: -304.9 MB). Peak memory consumption was 503.1 MB. Max. memory is 16.1 GB. * Witness Printer took 125.49 ms. Allocated memory is still 679.5 MB. Free memory was 345.3 MB in the beginning and 335.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 610]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 63634.2ms, OverallIterations: 24, TraceHistogramMax: 22, EmptinessCheckTime: 249.6ms, AutomataDifference: 7057.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 5058.9ms, InitialAbstractionConstructionTime: 20.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4339 SDtfs, 3895 SDslu, 3909 SDs, 0 SdLazy, 3760 SolverSat, 660 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3432.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10590 GetRequests, 10534 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 247.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10024occurred in iteration=21, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2867.9ms AutomataMinimizationTime, 24 MinimizatonAttempts, 7174 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 23 LocationsWithAnnotation, 23 PreInvPairs, 272 NumberOfFragments, 1234 HoareAnnotationTreeSize, 23 FomulaSimplifications, 18092 FormulaSimplificationTreeSizeReduction, 1611.5ms HoareSimplificationTime, 23 FomulaSimplificationsInter, 14631 FormulaSimplificationTreeSizeReductionInter, 3431.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 477.8ms SsaConstructionTime, 1944.9ms SatisfiabilityAnalysisTime, 24440.5ms InterpolantComputationTime, 5310 NumberOfCodeBlocks, 5310 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 10572 ConstructedInterpolants, 0 QuantifiedInterpolants, 14469 SizeOfPredicates, 4 NumberOfNonLiveVariables, 7315 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 48 InterpolantComputations, 42 PerfectInterpolantSequences, 43356/43460 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 173]: Loop Invariant Derived loop invariant: ((((((((((((!(s__state == 4368bv32) && 61087bv32 == ag_Y) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && 65535bv32 == ag_X) || ((((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__hit == 0bv32)) && !(s__state == 4099bv32)) - InvariantResult [Line: 185]: Loop Invariant Derived loop invariant: (((((((((((((!(s__state == 4368bv32) && 61087bv32 == ag_Y) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && s__s3__tmp__next_state___0 == 4560bv32) && !(s__state == 4099bv32)) && 65535bv32 == ag_X) || ((((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__hit == 0bv32)) && !(s__state == 4099bv32)) - InvariantResult [Line: 197]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 4368bv32) && 61087bv32 == ag_Y) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32) - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: (((((((0bv32 == blastFlag && !(4432bv32 == s__state)) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32) - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: (((((((((((((!(s__state == 4368bv32) && 61087bv32 == ag_Y) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && s__s3__tmp__next_state___0 == 4560bv32) && !(s__state == 4099bv32)) && 65535bv32 == ag_X) || (((((((((!(s__state == 4368bv32) && !(4432bv32 == s__state)) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && 1bv32 == blastFlag) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) - InvariantResult [Line: 194]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 95]: Loop Invariant Derived loop invariant: ((((((((((((((((((s__state == 4368bv32 && 0bv32 == blastFlag) || (((((!(s__s3__tmp__next_state___0 == 4368bv32) && 61087bv32 == ag_Y) && !(3bv32 == blastFlag)) && s__state == 3bv32) && !(s__hit == 0bv32)) && 65535bv32 == ag_X)) || (((((61087bv32 == ag_Y && !(3bv32 == blastFlag)) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && s__state == 4512bv32) && 65535bv32 == ag_X)) || ((2bv32 == blastFlag && s__state == 4560bv32) && !(s__hit == 0bv32))) || (((((61087bv32 == ag_Y && !(3bv32 == blastFlag)) && 4464bv32 == s__state) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && 65535bv32 == ag_X)) || (((((61087bv32 == ag_Y && !(3bv32 == blastFlag)) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && 4480bv32 == s__state) && 65535bv32 == ag_X)) || ((((((((((((!(s__state == 4368bv32) && 61087bv32 == ag_Y) && !(3bv32 == blastFlag)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && s__s3__tmp__next_state___0 == 4560bv32) && !(s__state == 4099bv32)) && 65535bv32 == ag_X)) || (((61087bv32 == ag_Y && s__hit == 0bv32) && s__state == 4416bv32) && !(5bv32 == blastFlag))) || (((!(s__s3__tmp__next_state___0 == 4368bv32) && 2bv32 == blastFlag) && s__state == 3bv32) && !(s__hit == 0bv32))) || ((((((!(s__s3__tmp__next_state___0 == 4368bv32) && 61087bv32 == ag_Y) && !(3bv32 == blastFlag)) && s__hit == 0bv32) && s__state == 4400bv32) && !(5bv32 == blastFlag)) && 65535bv32 == ag_X)) || (((((61087bv32 == ag_Y && !(3bv32 == blastFlag)) && s__hit == 0bv32) && 4432bv32 == s__state) && !(5bv32 == blastFlag)) && 65535bv32 == ag_X)) || (((((61087bv32 == ag_Y && !(3bv32 == blastFlag)) && s__hit == 0bv32) && s__state == 4528bv32) && !(5bv32 == blastFlag)) && 65535bv32 == ag_X)) || ((2bv32 == blastFlag && s__hit == 0bv32) && s__state == 4400bv32)) || (((((61087bv32 == ag_Y && !(3bv32 == blastFlag)) && s__hit == 0bv32) && s__state == 4448bv32) && !(5bv32 == blastFlag)) && 65535bv32 == ag_X)) || (((s__s3__tmp__next_state___0 == 3bv32 && 2bv32 == blastFlag) && !(s__hit == 0bv32)) && s__state == 4352bv32)) || ((2bv32 == blastFlag && s__state == 4528bv32) && !(s__hit == 0bv32))) || (1bv32 == blastFlag && s__state == 4384bv32)) || (((((61087bv32 == ag_Y && !(3bv32 == blastFlag)) && s__state == 4496bv32) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && 65535bv32 == ag_X)) || ((2bv32 == blastFlag && s__state == 4512bv32) && !(s__hit == 0bv32)) - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 4368bv32) && 61087bv32 == ag_Y) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && 65535bv32 == ag_X - InvariantResult [Line: 98]: Loop Invariant Derived loop invariant: 0bv32 == blastFlag && s__state == 12292bv32 - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: (((((((!(s__state == 4368bv32) && 0bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32) - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 4368bv32) && 61087bv32 == ag_Y) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && 65535bv32 == ag_X - InvariantResult [Line: 94]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 191]: Loop Invariant Derived loop invariant: ((((((61087bv32 == ag_Y && !(3bv32 == blastFlag)) && s__hit == 0bv32) && !(5bv32 == blastFlag)) && s__s3__tmp__next_state___0 == 4560bv32) && s__state == 4352bv32) && 65535bv32 == ag_X) || (((s__s3__tmp__next_state___0 == 3bv32 && 2bv32 == blastFlag) && !(s__hit == 0bv32)) && s__state == 4352bv32) - InvariantResult [Line: 161]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 4368bv32) && 61087bv32 == ag_Y) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && 65535bv32 == ag_X - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: (((((((((((((!(s__state == 4368bv32) && !(s__s3__tmp__next_state___0 == 4368bv32)) && 61087bv32 == ag_Y) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && 65535bv32 == ag_X) || (((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: ((((((((((!(s__state == 4368bv32) && 61087bv32 == ag_Y) && !(3bv32 == blastFlag)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && 65535bv32 == ag_X - InvariantResult [Line: 179]: Loop Invariant Derived loop invariant: ((((((((((((!(s__state == 4368bv32) && 61087bv32 == ag_Y) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && 65535bv32 == ag_X) || ((((((((((!(s__state == 4368bv32) && 2bv32 == blastFlag) && !(4432bv32 == s__state)) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(s__state == 4400bv32)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__hit == 0bv32)) && !(s__state == 4099bv32)) - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 4368bv32) && 61087bv32 == ag_Y) && !(3bv32 == blastFlag)) && !(4432bv32 == s__state)) && s__hit == 0bv32) && !(s__state == 4096bv32)) && !(s__state == 20480bv32)) && !(s__state == 12292bv32)) && !(5bv32 == blastFlag)) && !(s__state == 4369bv32)) && !(s__state == 16384bv32)) && !(s__state == 4099bv32)) && 65535bv32 == ag_X RESULT: Ultimate proved your program to be correct! [2021-10-13 00:35:37,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c48098-b94a-4951-a9df-44410a5b1e4a/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...