./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label47.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label47.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be --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 073d0286f7f22cdfd8eea76e89ac58c5da1aee755973b8c9a7ddb0308333499f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:14:37,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:14:37,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:14:38,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:14:38,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:14:38,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:14:38,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:14:38,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:14:38,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:14:38,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:14:38,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:14:38,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:14:38,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:14:38,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:14:38,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:14:38,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:14:38,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:14:38,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:14:38,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:14:38,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:14:38,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:14:38,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:14:38,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:14:38,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:14:38,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:14:38,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:14:38,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:14:38,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:14:38,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:14:38,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:14:38,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:14:38,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:14:38,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:14:38,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:14:38,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:14:38,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:14:38,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:14:38,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:14:38,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:14:38,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:14:38,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:14:38,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:14:38,187 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:14:38,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:14:38,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:14:38,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:14:38,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:14:38,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:14:38,190 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:14:38,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:14:38,191 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:14:38,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:14:38,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:14:38,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:14:38,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:14:38,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:14:38,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:14:38,193 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:14:38,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:14:38,194 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:14:38,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:14:38,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:14:38,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:14:38,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:14:38,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:14:38,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:14:38,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:14:38,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:14:38,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:14:38,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:14:38,197 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:14:38,198 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:14:38,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:14:38,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:14:38,199 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_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 073d0286f7f22cdfd8eea76e89ac58c5da1aee755973b8c9a7ddb0308333499f [2021-10-21 20:14:38,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:14:38,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:14:38,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:14:38,560 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:14:38,561 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:14:38,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/eca-rers2012/Problem14_label47.c [2021-10-21 20:14:38,661 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/data/db266b382/63f13f641c0945c8a0230c43835e8903/FLAGa163358e5 [2021-10-21 20:14:39,434 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:14:39,435 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/sv-benchmarks/c/eca-rers2012/Problem14_label47.c [2021-10-21 20:14:39,450 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/data/db266b382/63f13f641c0945c8a0230c43835e8903/FLAGa163358e5 [2021-10-21 20:14:39,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/data/db266b382/63f13f641c0945c8a0230c43835e8903 [2021-10-21 20:14:39,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:14:39,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:14:39,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:14:39,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:14:39,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:14:39,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:14:39" (1/1) ... [2021-10-21 20:14:39,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bbf828a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:39, skipping insertion in model container [2021-10-21 20:14:39,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:14:39" (1/1) ... [2021-10-21 20:14:39,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:14:39,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:14:39,959 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_8ff42499-751f-4142-ae04-2efdf45bb2eb/sv-benchmarks/c/eca-rers2012/Problem14_label47.c[3529,3542] [2021-10-21 20:14:40,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:14:40,324 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:14:40,362 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_8ff42499-751f-4142-ae04-2efdf45bb2eb/sv-benchmarks/c/eca-rers2012/Problem14_label47.c[3529,3542] [2021-10-21 20:14:40,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:14:40,622 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:14:40,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:40 WrapperNode [2021-10-21 20:14:40,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:14:40,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:14:40,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:14:40,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:14:40,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:40" (1/1) ... [2021-10-21 20:14:40,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:40" (1/1) ... [2021-10-21 20:14:40,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:14:40,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:14:40,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:14:40,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:14:40,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:40" (1/1) ... [2021-10-21 20:14:40,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:40" (1/1) ... [2021-10-21 20:14:40,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:40" (1/1) ... [2021-10-21 20:14:40,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:40" (1/1) ... [2021-10-21 20:14:40,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:40" (1/1) ... [2021-10-21 20:14:40,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:40" (1/1) ... [2021-10-21 20:14:40,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:40" (1/1) ... [2021-10-21 20:14:40,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:14:40,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:14:40,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:14:40,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:14:40,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:40" (1/1) ... [2021-10-21 20:14:40,942 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:14:40,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:14:40,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:14:40,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:14:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:14:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:14:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:14:41,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:14:42,921 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:14:42,921 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 20:14:42,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:14:42 BoogieIcfgContainer [2021-10-21 20:14:42,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:14:42,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:14:42,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:14:42,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:14:42,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:14:39" (1/3) ... [2021-10-21 20:14:42,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b37d2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:14:42, skipping insertion in model container [2021-10-21 20:14:42,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:14:40" (2/3) ... [2021-10-21 20:14:42,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b37d2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:14:42, skipping insertion in model container [2021-10-21 20:14:42,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:14:42" (3/3) ... [2021-10-21 20:14:42,936 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label47.c [2021-10-21 20:14:42,943 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:14:42,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:14:43,006 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:14:43,014 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:14:43,014 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:14:43,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:43,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 20:14:43,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:43,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:43,051 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:14:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:43,058 INFO L82 PathProgramCache]: Analyzing trace with hash 2113343065, now seen corresponding path program 1 times [2021-10-21 20:14:43,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:14:43,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920112781] [2021-10-21 20:14:43,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:43,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:14:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:43,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:14:43,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920112781] [2021-10-21 20:14:43,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920112781] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:43,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:43,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:14:43,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523570148] [2021-10-21 20:14:43,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:14:43,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:14:43,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:14:43,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:14:43,372 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 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 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:44,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:44,815 INFO L93 Difference]: Finished difference Result 685 states and 1216 transitions. [2021-10-21 20:14:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:14:44,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-21 20:14:44,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:44,836 INFO L225 Difference]: With dead ends: 685 [2021-10-21 20:14:44,836 INFO L226 Difference]: Without dead ends: 360 [2021-10-21 20:14:44,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:14:44,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-10-21 20:14:44,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2021-10-21 20:14:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4206128133704736) internal successors, (510), 359 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:44,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 510 transitions. [2021-10-21 20:14:44,955 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 510 transitions. Word has length 33 [2021-10-21 20:14:44,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:44,956 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 510 transitions. [2021-10-21 20:14:44,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:44,956 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 510 transitions. [2021-10-21 20:14:44,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-21 20:14:44,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:44,963 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:44,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:14:44,964 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:14:44,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:44,965 INFO L82 PathProgramCache]: Analyzing trace with hash 598342279, now seen corresponding path program 1 times [2021-10-21 20:14:44,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:14:44,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710457537] [2021-10-21 20:14:44,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:44,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:14:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:45,361 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:45,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:14:45,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710457537] [2021-10-21 20:14:45,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710457537] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:45,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:45,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:14:45,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623712384] [2021-10-21 20:14:45,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:14:45,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:14:45,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:14:45,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:14:45,368 INFO L87 Difference]: Start difference. First operand 360 states and 510 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:46,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:46,912 INFO L93 Difference]: Finished difference Result 1074 states and 1446 transitions. [2021-10-21 20:14:46,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:14:46,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-10-21 20:14:46,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:46,923 INFO L225 Difference]: With dead ends: 1074 [2021-10-21 20:14:46,924 INFO L226 Difference]: Without dead ends: 716 [2021-10-21 20:14:46,926 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:14:46,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-10-21 20:14:46,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2021-10-21 20:14:46,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.2615384615384615) internal successors, (902), 715 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 902 transitions. [2021-10-21 20:14:46,982 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 902 transitions. Word has length 112 [2021-10-21 20:14:46,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:46,983 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 902 transitions. [2021-10-21 20:14:46,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:46,984 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 902 transitions. [2021-10-21 20:14:46,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-21 20:14:46,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:46,993 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:46,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:14:46,994 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:14:46,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:46,994 INFO L82 PathProgramCache]: Analyzing trace with hash -508469528, now seen corresponding path program 1 times [2021-10-21 20:14:46,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:14:46,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011918600] [2021-10-21 20:14:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:46,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:14:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-21 20:14:47,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:14:47,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011918600] [2021-10-21 20:14:47,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011918600] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:14:47,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546990610] [2021-10-21 20:14:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:47,251 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:14:47,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:14:47,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:14:47,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:14:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:47,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:14:47,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:47,934 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-21 20:14:47,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546990610] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:47,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:14:47,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2021-10-21 20:14:47,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462699663] [2021-10-21 20:14:47,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:14:47,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:14:47,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:14:47,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:14:47,941 INFO L87 Difference]: Start difference. First operand 716 states and 902 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 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) [2021-10-21 20:14:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:48,831 INFO L93 Difference]: Finished difference Result 1252 states and 1612 transitions. [2021-10-21 20:14:48,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:14:48,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 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 138 [2021-10-21 20:14:48,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:48,842 INFO L225 Difference]: With dead ends: 1252 [2021-10-21 20:14:48,843 INFO L226 Difference]: Without dead ends: 1250 [2021-10-21 20:14:48,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.2ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:14:48,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-10-21 20:14:48,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 894. [2021-10-21 20:14:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.3370660694288914) internal successors, (1194), 893 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1194 transitions. [2021-10-21 20:14:48,880 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1194 transitions. Word has length 138 [2021-10-21 20:14:48,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:48,882 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 1194 transitions. [2021-10-21 20:14:48,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 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) [2021-10-21 20:14:48,882 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1194 transitions. [2021-10-21 20:14:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-10-21 20:14:48,890 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:48,890 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-21 20:14:48,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:49,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:14:49,117 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:14:49,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:49,118 INFO L82 PathProgramCache]: Analyzing trace with hash 215067956, now seen corresponding path program 1 times [2021-10-21 20:14:49,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:14:49,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149194888] [2021-10-21 20:14:49,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:49,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:14:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:14:49,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:14:49,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149194888] [2021-10-21 20:14:49,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149194888] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:49,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:49,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:14:49,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467744625] [2021-10-21 20:14:49,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:14:49,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:14:49,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:14:49,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:14:49,329 INFO L87 Difference]: Start difference. First operand 894 states and 1194 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:50,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:50,394 INFO L93 Difference]: Finished difference Result 1993 states and 2629 transitions. [2021-10-21 20:14:50,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:14:50,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 192 [2021-10-21 20:14:50,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:50,402 INFO L225 Difference]: With dead ends: 1993 [2021-10-21 20:14:50,402 INFO L226 Difference]: Without dead ends: 1072 [2021-10-21 20:14:50,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:14:50,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-10-21 20:14:50,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2021-10-21 20:14:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.1802054154995332) internal successors, (1264), 1071 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:50,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1264 transitions. [2021-10-21 20:14:50,445 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1264 transitions. Word has length 192 [2021-10-21 20:14:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:50,445 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1264 transitions. [2021-10-21 20:14:50,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:50,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1264 transitions. [2021-10-21 20:14:50,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-10-21 20:14:50,449 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:50,450 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-21 20:14:50,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:14:50,451 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:14:50,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:50,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1219303416, now seen corresponding path program 1 times [2021-10-21 20:14:50,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:14:50,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105341428] [2021-10-21 20:14:50,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:50,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:14:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 61 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:50,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:14:50,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105341428] [2021-10-21 20:14:50,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105341428] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:14:50,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839706107] [2021-10-21 20:14:50,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:50,684 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:14:50,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:14:50,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:14:50,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:14:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:50,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:14:50,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-21 20:14:51,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839706107] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:51,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:14:51,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-21 20:14:51,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455922133] [2021-10-21 20:14:51,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:14:51,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:14:51,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:14:51,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:14:51,411 INFO L87 Difference]: Start difference. First operand 1072 states and 1264 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:52,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:52,224 INFO L93 Difference]: Finished difference Result 2498 states and 3033 transitions. [2021-10-21 20:14:52,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:14:52,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-10-21 20:14:52,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:52,236 INFO L225 Difference]: With dead ends: 2498 [2021-10-21 20:14:52,236 INFO L226 Difference]: Without dead ends: 1428 [2021-10-21 20:14:52,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:14:52,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-10-21 20:14:52,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1072. [2021-10-21 20:14:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.1802054154995332) internal successors, (1264), 1071 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:52,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1264 transitions. [2021-10-21 20:14:52,280 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1264 transitions. Word has length 204 [2021-10-21 20:14:52,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:52,281 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1264 transitions. [2021-10-21 20:14:52,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1264 transitions. [2021-10-21 20:14:52,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-10-21 20:14:52,286 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:52,287 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-21 20:14:52,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:52,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:14:52,513 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:14:52,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:52,513 INFO L82 PathProgramCache]: Analyzing trace with hash -994795489, now seen corresponding path program 1 times [2021-10-21 20:14:52,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:14:52,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539713869] [2021-10-21 20:14:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:52,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:14:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:14:52,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:14:52,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539713869] [2021-10-21 20:14:52,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539713869] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:52,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:52,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:14:52,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120881711] [2021-10-21 20:14:52,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:14:52,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:14:52,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:14:52,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:14:52,658 INFO L87 Difference]: Start difference. First operand 1072 states and 1264 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:53,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:53,415 INFO L93 Difference]: Finished difference Result 2676 states and 3213 transitions. [2021-10-21 20:14:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:14:53,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2021-10-21 20:14:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:53,427 INFO L225 Difference]: With dead ends: 2676 [2021-10-21 20:14:53,427 INFO L226 Difference]: Without dead ends: 1606 [2021-10-21 20:14:53,430 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 [2021-10-21 20:14:53,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-10-21 20:14:53,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1428. [2021-10-21 20:14:53,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 1.156271899088998) internal successors, (1650), 1427 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:53,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1650 transitions. [2021-10-21 20:14:53,476 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1650 transitions. Word has length 207 [2021-10-21 20:14:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:53,477 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1650 transitions. [2021-10-21 20:14:53,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:53,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1650 transitions. [2021-10-21 20:14:53,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-10-21 20:14:53,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:53,484 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:53,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 20:14:53,485 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:14:53,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:53,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1450309740, now seen corresponding path program 1 times [2021-10-21 20:14:53,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:14:53,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206818486] [2021-10-21 20:14:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:53,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:14:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 147 proven. 130 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-10-21 20:14:53,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:14:53,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206818486] [2021-10-21 20:14:53,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206818486] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:14:53,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767607946] [2021-10-21 20:14:53,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:53,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:14:53,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:14:53,738 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:14:53,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:14:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:54,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:14:54,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:14:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-10-21 20:14:55,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767607946] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:55,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:14:55,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-10-21 20:14:55,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92722428] [2021-10-21 20:14:55,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:14:55,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:14:55,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:14:55,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:14:55,388 INFO L87 Difference]: Start difference. First operand 1428 states and 1650 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:56,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:56,167 INFO L93 Difference]: Finished difference Result 3210 states and 3788 transitions. [2021-10-21 20:14:56,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:14:56,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 326 [2021-10-21 20:14:56,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:56,182 INFO L225 Difference]: With dead ends: 3210 [2021-10-21 20:14:56,182 INFO L226 Difference]: Without dead ends: 1962 [2021-10-21 20:14:56,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:14:56,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2021-10-21 20:14:56,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1784. [2021-10-21 20:14:56,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1783 states have (on average 1.1402131239484015) internal successors, (2033), 1783 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2033 transitions. [2021-10-21 20:14:56,247 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2033 transitions. Word has length 326 [2021-10-21 20:14:56,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:56,248 INFO L470 AbstractCegarLoop]: Abstraction has 1784 states and 2033 transitions. [2021-10-21 20:14:56,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:56,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2033 transitions. [2021-10-21 20:14:56,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2021-10-21 20:14:56,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:56,259 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:56,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:14:56,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:14:56,473 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:14:56,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:56,473 INFO L82 PathProgramCache]: Analyzing trace with hash -640505863, now seen corresponding path program 1 times [2021-10-21 20:14:56,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:14:56,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116016838] [2021-10-21 20:14:56,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:56,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:14:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2021-10-21 20:14:56,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:14:56,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116016838] [2021-10-21 20:14:56,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116016838] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:56,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:56,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:14:56,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632482854] [2021-10-21 20:14:56,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:14:56,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:14:56,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:14:56,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:14:56,804 INFO L87 Difference]: Start difference. First operand 1784 states and 2033 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:57,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:57,677 INFO L93 Difference]: Finished difference Result 3595 states and 4116 transitions. [2021-10-21 20:14:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:14:57,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 403 [2021-10-21 20:14:57,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:57,704 INFO L225 Difference]: With dead ends: 3595 [2021-10-21 20:14:57,704 INFO L226 Difference]: Without dead ends: 1962 [2021-10-21 20:14:57,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:14:57,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2021-10-21 20:14:57,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1784. [2021-10-21 20:14:57,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1783 states have (on average 1.089736399326977) internal successors, (1943), 1783 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:57,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 1943 transitions. [2021-10-21 20:14:57,764 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 1943 transitions. Word has length 403 [2021-10-21 20:14:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:57,765 INFO L470 AbstractCegarLoop]: Abstraction has 1784 states and 1943 transitions. [2021-10-21 20:14:57,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:57,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 1943 transitions. [2021-10-21 20:14:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-10-21 20:14:57,778 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:57,779 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:57,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 20:14:57,780 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:14:57,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:57,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1483478618, now seen corresponding path program 1 times [2021-10-21 20:14:57,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:14:57,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649183811] [2021-10-21 20:14:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:57,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:14:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-10-21 20:14:58,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:14:58,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649183811] [2021-10-21 20:14:58,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649183811] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:58,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:58,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:14:58,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077336946] [2021-10-21 20:14:58,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:14:58,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:14:58,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:14:58,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:14:58,043 INFO L87 Difference]: Start difference. First operand 1784 states and 1943 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:58,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:58,788 INFO L93 Difference]: Finished difference Result 4100 states and 4527 transitions. [2021-10-21 20:14:58,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:14:58,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 426 [2021-10-21 20:14:58,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:58,805 INFO L225 Difference]: With dead ends: 4100 [2021-10-21 20:14:58,805 INFO L226 Difference]: Without dead ends: 2496 [2021-10-21 20:14:58,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:14:58,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-10-21 20:14:58,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2496. [2021-10-21 20:14:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 1.092184368737475) internal successors, (2725), 2495 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:58,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 2725 transitions. [2021-10-21 20:14:58,895 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 2725 transitions. Word has length 426 [2021-10-21 20:14:58,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:14:58,896 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 2725 transitions. [2021-10-21 20:14:58,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:58,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 2725 transitions. [2021-10-21 20:14:58,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2021-10-21 20:14:58,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:14:58,910 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:14:58,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 20:14:58,911 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:14:58,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:14:58,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1311069121, now seen corresponding path program 1 times [2021-10-21 20:14:58,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:14:58,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814797016] [2021-10-21 20:14:58,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:14:58,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:14:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:14:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 443 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-10-21 20:14:59,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:14:59,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814797016] [2021-10-21 20:14:59,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814797016] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:14:59,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:14:59,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:14:59,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200511815] [2021-10-21 20:14:59,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:14:59,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:14:59,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:14:59,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:14:59,199 INFO L87 Difference]: Start difference. First operand 2496 states and 2725 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:14:59,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:14:59,903 INFO L93 Difference]: Finished difference Result 6058 states and 6693 transitions. [2021-10-21 20:14:59,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:14:59,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 467 [2021-10-21 20:14:59,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:14:59,927 INFO L225 Difference]: With dead ends: 6058 [2021-10-21 20:14:59,927 INFO L226 Difference]: Without dead ends: 3742 [2021-10-21 20:14:59,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:14:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-10-21 20:15:00,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3742. [2021-10-21 20:15:00,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3741 states have (on average 1.0828655439722) internal successors, (4051), 3741 states have internal predecessors, (4051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 4051 transitions. [2021-10-21 20:15:00,035 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 4051 transitions. Word has length 467 [2021-10-21 20:15:00,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:00,037 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 4051 transitions. [2021-10-21 20:15:00,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:00,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 4051 transitions. [2021-10-21 20:15:00,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2021-10-21 20:15:00,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:00,043 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:00,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 20:15:00,044 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:00,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:00,044 INFO L82 PathProgramCache]: Analyzing trace with hash 2139477517, now seen corresponding path program 1 times [2021-10-21 20:15:00,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:00,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891719561] [2021-10-21 20:15:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:00,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 973 backedges. 590 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-10-21 20:15:00,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:00,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891719561] [2021-10-21 20:15:00,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891719561] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:00,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:00,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:00,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754679588] [2021-10-21 20:15:00,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:00,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:00,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:00,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:00,331 INFO L87 Difference]: Start difference. First operand 3742 states and 4051 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:01,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:01,002 INFO L93 Difference]: Finished difference Result 7304 states and 7921 transitions. [2021-10-21 20:15:01,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:01,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 503 [2021-10-21 20:15:01,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:01,026 INFO L225 Difference]: With dead ends: 7304 [2021-10-21 20:15:01,026 INFO L226 Difference]: Without dead ends: 3742 [2021-10-21 20:15:01,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:01,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-10-21 20:15:01,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3208. [2021-10-21 20:15:01,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.078578110383536) internal successors, (3459), 3207 states have internal predecessors, (3459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3459 transitions. [2021-10-21 20:15:01,132 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3459 transitions. Word has length 503 [2021-10-21 20:15:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:01,134 INFO L470 AbstractCegarLoop]: Abstraction has 3208 states and 3459 transitions. [2021-10-21 20:15:01,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3459 transitions. [2021-10-21 20:15:01,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2021-10-21 20:15:01,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:01,141 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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] [2021-10-21 20:15:01,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 20:15:01,142 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:01,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:01,143 INFO L82 PathProgramCache]: Analyzing trace with hash 801301915, now seen corresponding path program 1 times [2021-10-21 20:15:01,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:01,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140840185] [2021-10-21 20:15:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:01,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 797 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-10-21 20:15:01,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:01,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140840185] [2021-10-21 20:15:01,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140840185] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:01,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826475343] [2021-10-21 20:15:01,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:01,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:01,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:01,461 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:01,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 20:15:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:01,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:15:01,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2021-10-21 20:15:03,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826475343] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:03,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:15:03,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-10-21 20:15:03,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484436617] [2021-10-21 20:15:03,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:03,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:03,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:03,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:03,750 INFO L87 Difference]: Start difference. First operand 3208 states and 3459 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:04,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:04,310 INFO L93 Difference]: Finished difference Result 7126 states and 7684 transitions. [2021-10-21 20:15:04,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:04,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 622 [2021-10-21 20:15:04,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:04,328 INFO L225 Difference]: With dead ends: 7126 [2021-10-21 20:15:04,328 INFO L226 Difference]: Without dead ends: 3386 [2021-10-21 20:15:04,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:04,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2021-10-21 20:15:04,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3208. [2021-10-21 20:15:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.073277206111631) internal successors, (3442), 3207 states have internal predecessors, (3442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:04,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3442 transitions. [2021-10-21 20:15:04,461 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3442 transitions. Word has length 622 [2021-10-21 20:15:04,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:04,462 INFO L470 AbstractCegarLoop]: Abstraction has 3208 states and 3442 transitions. [2021-10-21 20:15:04,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:04,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3442 transitions. [2021-10-21 20:15:04,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2021-10-21 20:15:04,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:04,471 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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] [2021-10-21 20:15:04,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:04,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-21 20:15:04,697 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:04,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:04,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1110604027, now seen corresponding path program 1 times [2021-10-21 20:15:04,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:04,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219438738] [2021-10-21 20:15:04,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:04,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1646 backedges. 1191 proven. 110 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-10-21 20:15:05,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:05,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219438738] [2021-10-21 20:15:05,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219438738] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:05,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498617306] [2021-10-21 20:15:05,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:05,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:05,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:05,098 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:05,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 20:15:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:05,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:15:05,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1646 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 1461 trivial. 0 not checked. [2021-10-21 20:15:07,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498617306] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:07,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:15:07,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-10-21 20:15:07,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86975850] [2021-10-21 20:15:07,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:07,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:07,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:07,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:07,726 INFO L87 Difference]: Start difference. First operand 3208 states and 3442 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:08,231 INFO L93 Difference]: Finished difference Result 6592 states and 7086 transitions. [2021-10-21 20:15:08,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:08,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 701 [2021-10-21 20:15:08,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:08,252 INFO L225 Difference]: With dead ends: 6592 [2021-10-21 20:15:08,252 INFO L226 Difference]: Without dead ends: 3386 [2021-10-21 20:15:08,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:08,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2021-10-21 20:15:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3208. [2021-10-21 20:15:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.0673526660430308) internal successors, (3423), 3207 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:08,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3423 transitions. [2021-10-21 20:15:08,343 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3423 transitions. Word has length 701 [2021-10-21 20:15:08,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:08,344 INFO L470 AbstractCegarLoop]: Abstraction has 3208 states and 3423 transitions. [2021-10-21 20:15:08,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:08,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3423 transitions. [2021-10-21 20:15:08,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2021-10-21 20:15:08,353 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:08,354 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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] [2021-10-21 20:15:08,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:08,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:08,569 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:08,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:08,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1529784803, now seen corresponding path program 1 times [2021-10-21 20:15:08,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:08,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311484840] [2021-10-21 20:15:08,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:08,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1706 backedges. 1251 proven. 110 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-10-21 20:15:08,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:08,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311484840] [2021-10-21 20:15:08,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311484840] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:08,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441689471] [2021-10-21 20:15:08,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:08,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:08,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:08,963 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:08,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 20:15:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:09,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:15:09,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1706 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2021-10-21 20:15:11,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441689471] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:11,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:15:11,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-10-21 20:15:11,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491248401] [2021-10-21 20:15:11,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:11,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:11,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:11,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:11,570 INFO L87 Difference]: Start difference. First operand 3208 states and 3423 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:12,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:12,095 INFO L93 Difference]: Finished difference Result 6770 states and 7260 transitions. [2021-10-21 20:15:12,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:12,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 713 [2021-10-21 20:15:12,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:12,119 INFO L225 Difference]: With dead ends: 6770 [2021-10-21 20:15:12,120 INFO L226 Difference]: Without dead ends: 3920 [2021-10-21 20:15:12,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 713 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:12,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3920 states. [2021-10-21 20:15:12,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3920 to 3564. [2021-10-21 20:15:12,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 3563 states have (on average 1.0634296940780241) internal successors, (3789), 3563 states have internal predecessors, (3789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 3789 transitions. [2021-10-21 20:15:12,239 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 3789 transitions. Word has length 713 [2021-10-21 20:15:12,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:12,240 INFO L470 AbstractCegarLoop]: Abstraction has 3564 states and 3789 transitions. [2021-10-21 20:15:12,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 3789 transitions. [2021-10-21 20:15:12,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2021-10-21 20:15:12,251 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:12,252 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:12,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:12,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:12,466 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:12,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:12,467 INFO L82 PathProgramCache]: Analyzing trace with hash -186272149, now seen corresponding path program 1 times [2021-10-21 20:15:12,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:12,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077633025] [2021-10-21 20:15:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:12,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1709 backedges. 1209 proven. 155 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-10-21 20:15:12,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:12,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077633025] [2021-10-21 20:15:12,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077633025] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:12,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363416664] [2021-10-21 20:15:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:12,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:12,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:12,957 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:12,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 20:15:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:14,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:15:14,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1709 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 1524 trivial. 0 not checked. [2021-10-21 20:15:15,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363416664] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:15,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:15:15,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-10-21 20:15:15,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830833798] [2021-10-21 20:15:15,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:15,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:15,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:15,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:15,782 INFO L87 Difference]: Start difference. First operand 3564 states and 3789 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:16,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:16,466 INFO L93 Difference]: Finished difference Result 7838 states and 8371 transitions. [2021-10-21 20:15:16,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:16,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 769 [2021-10-21 20:15:16,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:16,515 INFO L225 Difference]: With dead ends: 7838 [2021-10-21 20:15:16,515 INFO L226 Difference]: Without dead ends: 4454 [2021-10-21 20:15:16,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:16,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states. [2021-10-21 20:15:16,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 4098. [2021-10-21 20:15:16,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.0571149621674396) internal successors, (4331), 4097 states have internal predecessors, (4331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 4331 transitions. [2021-10-21 20:15:16,609 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 4331 transitions. Word has length 769 [2021-10-21 20:15:16,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:16,610 INFO L470 AbstractCegarLoop]: Abstraction has 4098 states and 4331 transitions. [2021-10-21 20:15:16,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:16,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 4331 transitions. [2021-10-21 20:15:16,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2021-10-21 20:15:16,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:16,623 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:16,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:16,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:16,837 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:16,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:16,837 INFO L82 PathProgramCache]: Analyzing trace with hash 626886724, now seen corresponding path program 1 times [2021-10-21 20:15:16,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:16,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715047570] [2021-10-21 20:15:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:16,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1804 backedges. 1304 proven. 155 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-10-21 20:15:17,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:17,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715047570] [2021-10-21 20:15:17,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715047570] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:17,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162642965] [2021-10-21 20:15:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:17,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:17,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:17,286 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:17,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 20:15:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:19,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:15:19,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1804 backedges. 689 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2021-10-21 20:15:21,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162642965] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:21,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:15:21,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-10-21 20:15:21,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944148848] [2021-10-21 20:15:21,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:21,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:21,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:21,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:21,130 INFO L87 Difference]: Start difference. First operand 4098 states and 4331 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:21,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:21,663 INFO L93 Difference]: Finished difference Result 8550 states and 9077 transitions. [2021-10-21 20:15:21,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:21,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 788 [2021-10-21 20:15:21,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:21,685 INFO L225 Difference]: With dead ends: 8550 [2021-10-21 20:15:21,685 INFO L226 Difference]: Without dead ends: 4810 [2021-10-21 20:15:21,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 788 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:21,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-10-21 20:15:21,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4454. [2021-10-21 20:15:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 1.0559173590837638) internal successors, (4702), 4453 states have internal predecessors, (4702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 4702 transitions. [2021-10-21 20:15:21,783 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 4702 transitions. Word has length 788 [2021-10-21 20:15:21,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:21,784 INFO L470 AbstractCegarLoop]: Abstraction has 4454 states and 4702 transitions. [2021-10-21 20:15:21,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:21,785 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 4702 transitions. [2021-10-21 20:15:21,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2021-10-21 20:15:21,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:21,800 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 3, 3, 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] [2021-10-21 20:15:21,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:22,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-21 20:15:22,025 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:22,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:22,026 INFO L82 PathProgramCache]: Analyzing trace with hash 366067506, now seen corresponding path program 1 times [2021-10-21 20:15:22,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:22,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917145007] [2021-10-21 20:15:22,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:22,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:22,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2455 backedges. 1862 proven. 110 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-10-21 20:15:22,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:22,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917145007] [2021-10-21 20:15:22,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917145007] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:22,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128043150] [2021-10-21 20:15:22,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:22,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:22,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:22,465 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:22,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 20:15:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:24,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 20:15:24,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2455 backedges. 1862 proven. 110 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-10-21 20:15:26,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128043150] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:26,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:15:26,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-21 20:15:26,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503679066] [2021-10-21 20:15:26,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:15:26,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:26,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:15:26,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:15:26,330 INFO L87 Difference]: Start difference. First operand 4454 states and 4702 transitions. Second operand has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:27,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:27,135 INFO L93 Difference]: Finished difference Result 9618 states and 10170 transitions. [2021-10-21 20:15:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:15:27,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 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 837 [2021-10-21 20:15:27,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:27,148 INFO L225 Difference]: With dead ends: 9618 [2021-10-21 20:15:27,149 INFO L226 Difference]: Without dead ends: 5522 [2021-10-21 20:15:27,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:15:27,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5522 states. [2021-10-21 20:15:27,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5522 to 5166. [2021-10-21 20:15:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 5165 states have (on average 1.0526621490803485) internal successors, (5437), 5165 states have internal predecessors, (5437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:27,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 5437 transitions. [2021-10-21 20:15:27,253 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 5437 transitions. Word has length 837 [2021-10-21 20:15:27,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:27,254 INFO L470 AbstractCegarLoop]: Abstraction has 5166 states and 5437 transitions. [2021-10-21 20:15:27,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:27,255 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 5437 transitions. [2021-10-21 20:15:27,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2021-10-21 20:15:27,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:27,307 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:27,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:27,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-21 20:15:27,525 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:27,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:27,526 INFO L82 PathProgramCache]: Analyzing trace with hash -323674182, now seen corresponding path program 1 times [2021-10-21 20:15:27,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:27,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789511103] [2021-10-21 20:15:27,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:27,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2503 backedges. 1697 proven. 0 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2021-10-21 20:15:27,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:27,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789511103] [2021-10-21 20:15:27,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789511103] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:27,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:27,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:27,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791450717] [2021-10-21 20:15:27,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:27,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:27,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:27,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:27,955 INFO L87 Difference]: Start difference. First operand 5166 states and 5437 transitions. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:28,523 INFO L93 Difference]: Finished difference Result 9796 states and 10334 transitions. [2021-10-21 20:15:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:28,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 885 [2021-10-21 20:15:28,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:28,539 INFO L225 Difference]: With dead ends: 9796 [2021-10-21 20:15:28,540 INFO L226 Difference]: Without dead ends: 4988 [2021-10-21 20:15:28,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-10-21 20:15:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4988. [2021-10-21 20:15:28,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4988 states, 4987 states have (on average 1.044716262281933) internal successors, (5210), 4987 states have internal predecessors, (5210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 5210 transitions. [2021-10-21 20:15:28,639 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 5210 transitions. Word has length 885 [2021-10-21 20:15:28,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:28,640 INFO L470 AbstractCegarLoop]: Abstraction has 4988 states and 5210 transitions. [2021-10-21 20:15:28,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 5210 transitions. [2021-10-21 20:15:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2021-10-21 20:15:28,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:28,721 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:28,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-21 20:15:28,721 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:28,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:28,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1548717555, now seen corresponding path program 1 times [2021-10-21 20:15:28,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:28,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240429849] [2021-10-21 20:15:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:28,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2506 backedges. 1684 proven. 93 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-10-21 20:15:29,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:29,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240429849] [2021-10-21 20:15:29,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240429849] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:29,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895131837] [2021-10-21 20:15:29,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:29,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:29,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:29,137 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:15:29,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 20:15:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:31,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:15:31,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:15:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2506 backedges. 1787 proven. 266 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2021-10-21 20:15:41,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895131837] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:15:41,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:15:41,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-10-21 20:15:41,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149690228] [2021-10-21 20:15:41,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:15:41,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:41,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:15:41,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:15:41,376 INFO L87 Difference]: Start difference. First operand 4988 states and 5210 transitions. Second operand has 9 states, 9 states have (on average 100.11111111111111) internal successors, (901), 8 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:44,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:44,000 INFO L93 Difference]: Finished difference Result 10574 states and 11045 transitions. [2021-10-21 20:15:44,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 20:15:44,004 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 100.11111111111111) internal successors, (901), 8 states have internal predecessors, (901), 0 states have call successors, (0), 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 903 [2021-10-21 20:15:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:44,016 INFO L225 Difference]: With dead ends: 10574 [2021-10-21 20:15:44,017 INFO L226 Difference]: Without dead ends: 5582 [2021-10-21 20:15:44,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 899 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 205.0ms TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2021-10-21 20:15:44,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5582 states. [2021-10-21 20:15:44,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5582 to 4988. [2021-10-21 20:15:44,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4988 states, 4987 states have (on average 1.0328855023059955) internal successors, (5151), 4987 states have internal predecessors, (5151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 5151 transitions. [2021-10-21 20:15:44,122 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 5151 transitions. Word has length 903 [2021-10-21 20:15:44,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:44,123 INFO L470 AbstractCegarLoop]: Abstraction has 4988 states and 5151 transitions. [2021-10-21 20:15:44,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 100.11111111111111) internal successors, (901), 8 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:44,124 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 5151 transitions. [2021-10-21 20:15:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1026 [2021-10-21 20:15:44,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:44,139 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:15:44,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:15:44,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:15:44,353 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:44,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:44,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1372255578, now seen corresponding path program 1 times [2021-10-21 20:15:44,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:44,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227929946] [2021-10-21 20:15:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:44,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3009 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 2762 trivial. 0 not checked. [2021-10-21 20:15:45,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:45,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227929946] [2021-10-21 20:15:45,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227929946] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:45,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:45,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:45,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886259911] [2021-10-21 20:15:45,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:15:45,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:45,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:15:45,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:15:45,067 INFO L87 Difference]: Start difference. First operand 4988 states and 5151 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:45,721 INFO L93 Difference]: Finished difference Result 9480 states and 9796 transitions. [2021-10-21 20:15:45,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:15:45,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 1025 [2021-10-21 20:15:45,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:45,736 INFO L225 Difference]: With dead ends: 9480 [2021-10-21 20:15:45,736 INFO L226 Difference]: Without dead ends: 4810 [2021-10-21 20:15:45,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:15:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-10-21 20:15:45,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4810. [2021-10-21 20:15:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0311915159076732) internal successors, (4959), 4809 states have internal predecessors, (4959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 4959 transitions. [2021-10-21 20:15:45,847 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 4959 transitions. Word has length 1025 [2021-10-21 20:15:45,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:45,848 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 4959 transitions. [2021-10-21 20:15:45,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:45,849 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 4959 transitions. [2021-10-21 20:15:45,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2021-10-21 20:15:45,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:15:45,865 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-21 20:15:45,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-21 20:15:45,866 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:15:45,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:45,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1952515600, now seen corresponding path program 1 times [2021-10-21 20:15:45,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:45,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115690241] [2021-10-21 20:15:45,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:45,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3502 backedges. 1033 proven. 0 refuted. 0 times theorem prover too weak. 2469 trivial. 0 not checked. [2021-10-21 20:15:46,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:46,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115690241] [2021-10-21 20:15:46,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115690241] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:46,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:46,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:46,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190084870] [2021-10-21 20:15:46,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:46,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:46,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:46,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:46,493 INFO L87 Difference]: Start difference. First operand 4810 states and 4959 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:47,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:15:47,057 INFO L93 Difference]: Finished difference Result 9438 states and 9739 transitions. [2021-10-21 20:15:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:47,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 1036 [2021-10-21 20:15:47,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:15:47,060 INFO L225 Difference]: With dead ends: 9438 [2021-10-21 20:15:47,060 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:15:47,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:47,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:15:47,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:15:47,068 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) [2021-10-21 20:15:47,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:15:47,068 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1036 [2021-10-21 20:15:47,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:15:47,069 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:15:47,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:47,069 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:15:47,069 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:15:47,072 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:15:47,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-21 20:15:47,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:15:47,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:47,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:47,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:15:48,618 INFO L857 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2021-10-21 20:15:48,618 INFO L857 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-10-21 20:15:48,618 INFO L857 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2021-10-21 20:15:48,618 INFO L857 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2021-10-21 20:15:48,619 INFO L857 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2021-10-21 20:15:48,620 INFO L857 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,621 INFO L857 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,621 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,621 INFO L857 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2021-10-21 20:15:48,621 INFO L857 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2021-10-21 20:15:48,621 INFO L857 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-10-21 20:15:48,622 INFO L857 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-10-21 20:15:48,622 INFO L857 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-10-21 20:15:48,622 INFO L857 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2021-10-21 20:15:48,622 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2021-10-21 20:15:48,622 INFO L857 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2021-10-21 20:15:48,623 INFO L857 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,623 INFO L857 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,623 INFO L857 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,623 INFO L857 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2021-10-21 20:15:48,623 INFO L857 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-10-21 20:15:48,623 INFO L857 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-10-21 20:15:48,624 INFO L857 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-10-21 20:15:48,624 INFO L857 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2021-10-21 20:15:48,624 INFO L857 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2021-10-21 20:15:48,624 INFO L857 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2021-10-21 20:15:48,624 INFO L857 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2021-10-21 20:15:48,625 INFO L857 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2021-10-21 20:15:48,625 INFO L857 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,625 INFO L857 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,625 INFO L857 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,625 INFO L857 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2021-10-21 20:15:48,625 INFO L857 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-10-21 20:15:48,626 INFO L857 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-10-21 20:15:48,626 INFO L857 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-10-21 20:15:48,626 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2021-10-21 20:15:48,626 INFO L857 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2021-10-21 20:15:48,626 INFO L857 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2021-10-21 20:15:48,626 INFO L857 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,627 INFO L857 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,627 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,627 INFO L857 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2021-10-21 20:15:48,627 INFO L857 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-10-21 20:15:48,627 INFO L857 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-10-21 20:15:48,627 INFO L857 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-10-21 20:15:48,628 INFO L857 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2021-10-21 20:15:48,628 INFO L857 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2021-10-21 20:15:48,628 INFO L857 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2021-10-21 20:15:48,628 INFO L857 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2021-10-21 20:15:48,628 INFO L857 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,629 INFO L857 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,629 INFO L857 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,629 INFO L857 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2021-10-21 20:15:48,629 INFO L857 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2021-10-21 20:15:48,629 INFO L857 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-10-21 20:15:48,629 INFO L857 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-10-21 20:15:48,630 INFO L857 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-10-21 20:15:48,630 INFO L857 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2021-10-21 20:15:48,630 INFO L857 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2021-10-21 20:15:48,630 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2021-10-21 20:15:48,630 INFO L857 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,630 INFO L857 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,631 INFO L857 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,631 INFO L857 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2021-10-21 20:15:48,631 INFO L857 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-10-21 20:15:48,631 INFO L857 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-10-21 20:15:48,631 INFO L857 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-10-21 20:15:48,631 INFO L857 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2021-10-21 20:15:48,632 INFO L857 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2021-10-21 20:15:48,632 INFO L857 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2021-10-21 20:15:48,632 INFO L857 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2021-10-21 20:15:48,632 INFO L857 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2021-10-21 20:15:48,632 INFO L857 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,632 INFO L857 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,633 INFO L857 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,633 INFO L857 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2021-10-21 20:15:48,633 INFO L857 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-10-21 20:15:48,633 INFO L857 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-10-21 20:15:48,633 INFO L857 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-10-21 20:15:48,633 INFO L857 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2021-10-21 20:15:48,633 INFO L857 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2021-10-21 20:15:48,634 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2021-10-21 20:15:48,634 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:15:48,634 INFO L857 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,634 INFO L857 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,634 INFO L857 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,634 INFO L857 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2021-10-21 20:15:48,635 INFO L857 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-10-21 20:15:48,635 INFO L857 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-10-21 20:15:48,635 INFO L857 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-10-21 20:15:48,635 INFO L857 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2021-10-21 20:15:48,635 INFO L857 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2021-10-21 20:15:48,635 INFO L857 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2021-10-21 20:15:48,636 INFO L857 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2021-10-21 20:15:48,636 INFO L857 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2021-10-21 20:15:48,636 INFO L857 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,636 INFO L857 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,636 INFO L857 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,636 INFO L857 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2021-10-21 20:15:48,637 INFO L857 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-10-21 20:15:48,637 INFO L857 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-10-21 20:15:48,637 INFO L857 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-10-21 20:15:48,637 INFO L857 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2021-10-21 20:15:48,637 INFO L857 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2021-10-21 20:15:48,637 INFO L857 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2021-10-21 20:15:48,638 INFO L857 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2021-10-21 20:15:48,638 INFO L857 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,638 INFO L857 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,638 INFO L857 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,638 INFO L857 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-10-21 20:15:48,638 INFO L857 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-10-21 20:15:48,639 INFO L857 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-10-21 20:15:48,639 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:15:48,639 INFO L857 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2021-10-21 20:15:48,639 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2021-10-21 20:15:48,639 INFO L857 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2021-10-21 20:15:48,639 INFO L857 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2021-10-21 20:15:48,640 INFO L857 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2021-10-21 20:15:48,640 INFO L857 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2021-10-21 20:15:48,640 INFO L857 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,640 INFO L857 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,640 INFO L857 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,641 INFO L857 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2021-10-21 20:15:48,641 INFO L857 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2021-10-21 20:15:48,641 INFO L857 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-10-21 20:15:48,641 INFO L857 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-10-21 20:15:48,641 INFO L857 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-10-21 20:15:48,641 INFO L857 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2021-10-21 20:15:48,642 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2021-10-21 20:15:48,642 INFO L857 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2021-10-21 20:15:48,642 INFO L857 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,642 INFO L857 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,642 INFO L857 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,642 INFO L857 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-10-21 20:15:48,643 INFO L857 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-10-21 20:15:48,643 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-21 20:15:48,643 INFO L857 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2021-10-21 20:15:48,643 INFO L857 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2021-10-21 20:15:48,643 INFO L857 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2021-10-21 20:15:48,643 INFO L857 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2021-10-21 20:15:48,644 INFO L857 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2021-10-21 20:15:48,644 INFO L857 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,644 INFO L857 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,644 INFO L857 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,644 INFO L857 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2021-10-21 20:15:48,644 INFO L857 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2021-10-21 20:15:48,645 INFO L857 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-10-21 20:15:48,645 INFO L857 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-10-21 20:15:48,645 INFO L857 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-10-21 20:15:48,645 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2021-10-21 20:15:48,645 INFO L857 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2021-10-21 20:15:48,645 INFO L857 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2021-10-21 20:15:48,646 INFO L857 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,646 INFO L857 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,646 INFO L857 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,646 INFO L857 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2021-10-21 20:15:48,646 INFO L857 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-10-21 20:15:48,646 INFO L857 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-10-21 20:15:48,647 INFO L857 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-10-21 20:15:48,647 INFO L857 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2021-10-21 20:15:48,647 INFO L857 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2021-10-21 20:15:48,647 INFO L857 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2021-10-21 20:15:48,647 INFO L857 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2021-10-21 20:15:48,648 INFO L857 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,648 INFO L857 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,648 INFO L857 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,648 INFO L857 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2021-10-21 20:15:48,648 INFO L857 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-10-21 20:15:48,648 INFO L857 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-10-21 20:15:48,649 INFO L857 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-10-21 20:15:48,649 INFO L857 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2021-10-21 20:15:48,649 INFO L857 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2021-10-21 20:15:48,649 INFO L857 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2021-10-21 20:15:48,649 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2021-10-21 20:15:48,649 INFO L857 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,650 INFO L857 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,650 INFO L857 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2021-10-21 20:15:48,650 INFO L857 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-10-21 20:15:48,650 INFO L857 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-10-21 20:15:48,650 INFO L857 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2021-10-21 20:15:48,651 INFO L857 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2021-10-21 20:15:48,651 INFO L857 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2021-10-21 20:15:48,651 INFO L857 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2021-10-21 20:15:48,651 INFO L857 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2021-10-21 20:15:48,651 INFO L857 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,651 INFO L857 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,652 INFO L857 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2021-10-21 20:15:48,652 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:15:48,652 INFO L857 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-10-21 20:15:48,652 INFO L857 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-10-21 20:15:48,652 INFO L857 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2021-10-21 20:15:48,652 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2021-10-21 20:15:48,653 INFO L857 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2021-10-21 20:15:48,653 INFO L857 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,653 INFO L857 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,653 INFO L853 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse5 (+ ~a12~0 43))) (let ((.cse4 (<= ~a15~0 6)) (.cse0 (<= ~a12~0 11)) (.cse3 (< 0 .cse5)) (.cse2 (<= 10 ~a21~0)) (.cse1 (= ~a24~0 1)) (.cse6 (<= ~a15~0 8)) (.cse7 (<= ~a21~0 8))) (or (and .cse0 .cse1 .cse2) (and .cse1 (<= ~a12~0 76) .cse3 (= ~a15~0 8)) (and .cse1 .cse4) (and (<= .cse5 0) .cse4) (and .cse1 (<= 81 ~a12~0)) (and .cse1 .cse6 (<= (+ 49 ~a12~0) 0) .cse7) (and .cse0 .cse1 .cse6 .cse7 .cse3) (and .cse1 .cse6 .cse2) (and .cse1 (<= 8 ~a21~0) .cse7) (and .cse1 (= ~a21~0 9) (< 11 ~a12~0) (= 7 ~a15~0)) (and .cse1 (<= 7 ~a21~0) .cse6 .cse7)))) [2021-10-21 20:15:48,654 INFO L857 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2021-10-21 20:15:48,654 INFO L857 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2021-10-21 20:15:48,654 INFO L857 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-10-21 20:15:48,654 INFO L857 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-10-21 20:15:48,654 INFO L857 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2021-10-21 20:15:48,654 INFO L857 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2021-10-21 20:15:48,655 INFO L857 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2021-10-21 20:15:48,655 INFO L857 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2021-10-21 20:15:48,655 INFO L857 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,655 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,655 INFO L860 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2021-10-21 20:15:48,655 INFO L857 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2021-10-21 20:15:48,656 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2021-10-21 20:15:48,656 INFO L857 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-10-21 20:15:48,656 INFO L857 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-10-21 20:15:48,656 INFO L857 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2021-10-21 20:15:48,656 INFO L857 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2021-10-21 20:15:48,657 INFO L857 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2021-10-21 20:15:48,657 INFO L857 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,657 INFO L857 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,657 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:15:48,657 INFO L857 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2021-10-21 20:15:48,657 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2021-10-21 20:15:48,658 INFO L857 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-10-21 20:15:48,658 INFO L857 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-10-21 20:15:48,658 INFO L857 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2021-10-21 20:15:48,658 INFO L857 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2021-10-21 20:15:48,658 INFO L857 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,658 INFO L857 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,659 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-10-21 20:15:48,659 INFO L857 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,659 INFO L857 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2021-10-21 20:15:48,659 INFO L853 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse5 (+ ~a12~0 43))) (let ((.cse4 (<= ~a15~0 6)) (.cse0 (<= ~a12~0 11)) (.cse3 (< 0 .cse5)) (.cse2 (<= 10 ~a21~0)) (.cse1 (= ~a24~0 1)) (.cse6 (<= ~a15~0 8)) (.cse7 (<= ~a21~0 8))) (or (and .cse0 .cse1 .cse2) (and .cse1 (<= ~a12~0 76) .cse3 (= ~a15~0 8)) (and .cse1 .cse4) (and (<= .cse5 0) .cse4) (and .cse1 (<= 81 ~a12~0)) (and .cse1 .cse6 (<= (+ 49 ~a12~0) 0) .cse7) (and .cse0 .cse1 .cse6 .cse7 .cse3) (and .cse1 .cse6 .cse2) (and .cse1 (<= 8 ~a21~0) .cse7) (and .cse1 (= ~a21~0 9) (< 11 ~a12~0) (= 7 ~a15~0)) (and .cse1 (<= 7 ~a21~0) .cse6 .cse7)))) [2021-10-21 20:15:48,659 INFO L857 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2021-10-21 20:15:48,660 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2021-10-21 20:15:48,660 INFO L857 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-10-21 20:15:48,660 INFO L857 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-10-21 20:15:48,660 INFO L857 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-10-21 20:15:48,660 INFO L857 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2021-10-21 20:15:48,660 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2021-10-21 20:15:48,661 INFO L857 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2021-10-21 20:15:48,661 INFO L857 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2021-10-21 20:15:48,661 INFO L857 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,661 INFO L857 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,661 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2021-10-21 20:15:48,661 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2021-10-21 20:15:48,662 INFO L857 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-10-21 20:15:48,662 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-10-21 20:15:48,662 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-21 20:15:48,668 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:15:48,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:15:48 BoogieIcfgContainer [2021-10-21 20:15:48,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:15:48,718 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:15:48,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:15:48,719 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:15:48,719 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:14:42" (3/4) ... [2021-10-21 20:15:48,723 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:15:48,775 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-21 20:15:48,777 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:15:48,779 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:15:48,781 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:15:48,989 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:15:48,989 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:15:48,991 INFO L168 Benchmark]: Toolchain (without parser) took 69393.90 ms. Allocated memory was 88.1 MB in the beginning and 673.2 MB in the end (delta: 585.1 MB). Free memory was 48.6 MB in the beginning and 188.0 MB in the end (delta: -139.4 MB). Peak memory consumption was 445.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:48,992 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory was 66.8 MB in the beginning and 66.8 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:15:48,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1026.80 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 48.4 MB in the beginning and 65.3 MB in the end (delta: -16.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:48,993 INFO L168 Benchmark]: Boogie Procedure Inliner took 160.81 ms. Allocated memory is still 115.3 MB. Free memory was 65.3 MB in the beginning and 55.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:48,994 INFO L168 Benchmark]: Boogie Preprocessor took 143.20 ms. Allocated memory is still 115.3 MB. Free memory was 55.7 MB in the beginning and 49.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:48,995 INFO L168 Benchmark]: RCFGBuilder took 1993.37 ms. Allocated memory is still 115.3 MB. Free memory was 49.7 MB in the beginning and 64.1 MB in the end (delta: -14.3 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:48,996 INFO L168 Benchmark]: TraceAbstraction took 65791.00 ms. Allocated memory was 115.3 MB in the beginning and 673.2 MB in the end (delta: 557.8 MB). Free memory was 63.4 MB in the beginning and 206.9 MB in the end (delta: -143.5 MB). Peak memory consumption was 446.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:48,996 INFO L168 Benchmark]: Witness Printer took 270.91 ms. Allocated memory is still 673.2 MB. Free memory was 206.9 MB in the beginning and 188.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:49,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory was 66.8 MB in the beginning and 66.8 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1026.80 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 48.4 MB in the beginning and 65.3 MB in the end (delta: -16.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 160.81 ms. Allocated memory is still 115.3 MB. Free memory was 65.3 MB in the beginning and 55.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 143.20 ms. Allocated memory is still 115.3 MB. Free memory was 55.7 MB in the beginning and 49.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1993.37 ms. Allocated memory is still 115.3 MB. Free memory was 49.7 MB in the beginning and 64.1 MB in the end (delta: -14.3 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 65791.00 ms. Allocated memory was 115.3 MB in the beginning and 673.2 MB in the end (delta: 557.8 MB). Free memory was 63.4 MB in the beginning and 206.9 MB in the end (delta: -143.5 MB). Peak memory consumption was 446.5 MB. Max. memory is 16.1 GB. * Witness Printer took 270.91 ms. Allocated memory is still 673.2 MB. Free memory was 206.9 MB in the beginning and 188.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 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: 113]: 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, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65664.2ms, OverallIterations: 21, TraceHistogramMax: 10, EmptinessCheckTime: 304.5ms, AutomataDifference: 18840.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1543.8ms, InitialAbstractionConstructionTime: 20.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2508 SDtfs, 3192 SDslu, 152 SDs, 0 SdLazy, 12642 SolverSat, 1170 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13437.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6071 GetRequests, 6012 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 421.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5166occurred in iteration=17, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1620.5ms AutomataMinimizationTime, 21 MinimizatonAttempts, 4154 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 89 NumberOfFragments, 257 HoareAnnotationTreeSize, 3 FomulaSimplifications, 41114 FormulaSimplificationTreeSizeReduction, 457.2ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 12446 FormulaSimplificationTreeSizeReductionInter, 1075.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 887.4ms SsaConstructionTime, 2963.5ms SatisfiabilityAnalysisTime, 29043.8ms InterpolantComputationTime, 17291 NumberOfCodeBlocks, 17291 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 17260 ConstructedInterpolants, 0 QuantifiedInterpolants, 46942 SizeOfPredicates, 0 NumberOfNonLiveVariables, 7794 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 31 InterpolantComputations, 19 PerfectInterpolantSequences, 38001/39431 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: 30]: Loop Invariant Derived loop invariant: (((((((((((a12 <= 11 && a24 == 1) && 10 <= a21) || (((a24 == 1 && a12 <= 76) && 0 < a12 + 43) && a15 == 8)) || (a24 == 1 && a15 <= 6)) || (a12 + 43 <= 0 && a15 <= 6)) || (a24 == 1 && 81 <= a12)) || (((a24 == 1 && a15 <= 8) && 49 + a12 <= 0) && a21 <= 8)) || ((((a12 <= 11 && a24 == 1) && a15 <= 8) && a21 <= 8) && 0 < a12 + 43)) || ((a24 == 1 && a15 <= 8) && 10 <= a21)) || ((a24 == 1 && 8 <= a21) && a21 <= 8)) || (((a24 == 1 && a21 == 9) && 11 < a12) && 7 == a15)) || (((a24 == 1 && 7 <= a21) && a15 <= 8) && a21 <= 8) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: (((((((((((a12 <= 11 && a24 == 1) && 10 <= a21) || (((a24 == 1 && a12 <= 76) && 0 < a12 + 43) && a15 == 8)) || (a24 == 1 && a15 <= 6)) || (a12 + 43 <= 0 && a15 <= 6)) || (a24 == 1 && 81 <= a12)) || (((a24 == 1 && a15 <= 8) && 49 + a12 <= 0) && a21 <= 8)) || ((((a12 <= 11 && a24 == 1) && a15 <= 8) && a21 <= 8) && 0 < a12 + 43)) || ((a24 == 1 && a15 <= 8) && 10 <= a21)) || ((a24 == 1 && 8 <= a21) && a21 <= 8)) || (((a24 == 1 && a21 == 9) && 11 < a12) && 7 == a15)) || (((a24 == 1 && 7 <= a21) && a15 <= 8) && a21 <= 8) RESULT: Ultimate proved your program to be correct! [2021-10-21 20:15:49,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff42499-751f-4142-ae04-2efdf45bb2eb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...