./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/egcd3-ll.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_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/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_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/egcd3-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/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_5d3b4e31-b14e-41f3-8812-ad406bafc096/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 4ef08007570a64191e0df13d14d3e8d62a8022f43f46779ea6f6701a621376be ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 19:53:45,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:53:45,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:53:45,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:53:45,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:53:45,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:53:45,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:53:45,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:53:45,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:53:45,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:53:45,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:53:45,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:53:45,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:53:45,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:53:45,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:53:45,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:53:45,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:53:45,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:53:45,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:53:45,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:53:45,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:53:45,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:53:45,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:53:45,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:53:45,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:53:45,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:53:45,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:53:45,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:53:45,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:53:45,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:53:45,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:53:45,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:53:45,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:53:45,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:53:45,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:53:45,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:53:45,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:53:45,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:53:45,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:53:45,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:53:45,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:53:45,184 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:53:45,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:53:45,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:53:45,222 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:53:45,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:53:45,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:53:45,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:53:45,224 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:53:45,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:53:45,225 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:53:45,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:53:45,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:53:45,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:53:45,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:53:45,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:53:45,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:53:45,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:53:45,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:53:45,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:53:45,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:53:45,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:53:45,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:53:45,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:53:45,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:53:45,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:53:45,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:53:45,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:53:45,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:53:45,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:53:45,233 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:53:45,233 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:53:45,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:53:45,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:53:45,234 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_5d3b4e31-b14e-41f3-8812-ad406bafc096/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ef08007570a64191e0df13d14d3e8d62a8022f43f46779ea6f6701a621376be [2021-10-21 19:53:45,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:53:45,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:53:45,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:53:45,572 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:53:45,573 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:53:45,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/nla-digbench/egcd3-ll.c [2021-10-21 19:53:45,698 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/data/2ed90e6fe/5cc30e2852704e52be7054f5d9ee45a0/FLAG4d1ba6994 [2021-10-21 19:53:46,224 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:53:46,225 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/sv-benchmarks/c/nla-digbench/egcd3-ll.c [2021-10-21 19:53:46,232 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/data/2ed90e6fe/5cc30e2852704e52be7054f5d9ee45a0/FLAG4d1ba6994 [2021-10-21 19:53:46,592 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/data/2ed90e6fe/5cc30e2852704e52be7054f5d9ee45a0 [2021-10-21 19:53:46,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:53:46,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:53:46,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:53:46,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:53:46,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:53:46,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:53:46" (1/1) ... [2021-10-21 19:53:46,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4baeb6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:53:46, skipping insertion in model container [2021-10-21 19:53:46,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:53:46" (1/1) ... [2021-10-21 19:53:46,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:53:46,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:53:46,813 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_5d3b4e31-b14e-41f3-8812-ad406bafc096/sv-benchmarks/c/nla-digbench/egcd3-ll.c[490,503] [2021-10-21 19:53:46,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:53:46,839 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:53:46,851 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_5d3b4e31-b14e-41f3-8812-ad406bafc096/sv-benchmarks/c/nla-digbench/egcd3-ll.c[490,503] [2021-10-21 19:53:46,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:53:46,875 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:53:46,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:53:46 WrapperNode [2021-10-21 19:53:46,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:53:46,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:53:46,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:53:46,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:53:46,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:53:46" (1/1) ... [2021-10-21 19:53:46,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:53:46" (1/1) ... [2021-10-21 19:53:46,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:53:46,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:53:46,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:53:46,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:53:46,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:53:46" (1/1) ... [2021-10-21 19:53:46,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:53:46" (1/1) ... [2021-10-21 19:53:46,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:53:46" (1/1) ... [2021-10-21 19:53:46,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:53:46" (1/1) ... [2021-10-21 19:53:46,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:53:46" (1/1) ... [2021-10-21 19:53:46,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:53:46" (1/1) ... [2021-10-21 19:53:46,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:53:46" (1/1) ... [2021-10-21 19:53:46,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:53:46,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:53:46,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:53:46,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:53:46,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:53:46" (1/1) ... [2021-10-21 19:53:46,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:53:46,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:53:46,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:53:47,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:53:47,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:53:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:53:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:53:47,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:53:47,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:53:47,310 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-21 19:53:47,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:53:47 BoogieIcfgContainer [2021-10-21 19:53:47,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:53:47,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:53:47,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:53:47,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:53:47,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:53:46" (1/3) ... [2021-10-21 19:53:47,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794b08a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:53:47, skipping insertion in model container [2021-10-21 19:53:47,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:53:46" (2/3) ... [2021-10-21 19:53:47,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794b08a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:53:47, skipping insertion in model container [2021-10-21 19:53:47,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:53:47" (3/3) ... [2021-10-21 19:53:47,324 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll.c [2021-10-21 19:53:47,331 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:53:47,331 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-10-21 19:53:47,394 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:53:47,403 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 19:53:47,404 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-21 19:53:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 36 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 19:53:47,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:53:47,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:53:47,430 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:53:47,431 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:53:47,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:53:47,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1236053721, now seen corresponding path program 1 times [2021-10-21 19:53:47,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:53:47,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849800285] [2021-10-21 19:53:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:47,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:53:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:53:47,680 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 19:53:47,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:53:47,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849800285] [2021-10-21 19:53:47,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849800285] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:53:47,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:53:47,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:53:47,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773989302] [2021-10-21 19:53:47,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:53:47,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:53:47,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:53:47,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:53:47,717 INFO L87 Difference]: Start difference. First operand has 37 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 36 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 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 19:53:47,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:53:47,759 INFO L93 Difference]: Finished difference Result 71 states and 100 transitions. [2021-10-21 19:53:47,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:53:47,761 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-10-21 19:53:47,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:53:47,773 INFO L225 Difference]: With dead ends: 71 [2021-10-21 19:53:47,773 INFO L226 Difference]: Without dead ends: 33 [2021-10-21 19:53:47,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:53:47,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-21 19:53:47,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-21 19:53:47,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 19:53:47,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-10-21 19:53:47,861 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 10 [2021-10-21 19:53:47,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:53:47,863 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-10-21 19:53:47,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 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 19:53:47,864 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-10-21 19:53:47,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:53:47,865 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:53:47,866 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:53:47,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:53:47,869 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:53:47,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:53:47,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1503549271, now seen corresponding path program 1 times [2021-10-21 19:53:47,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:53:47,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745883628] [2021-10-21 19:53:47,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:47,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:53:47,916 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:53:47,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942738632] [2021-10-21 19:53:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:47,918 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:47,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:53:47,920 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:53:47,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:53:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:53:48,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:53:48,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:53:48,164 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 19:53:48,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:53:48,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745883628] [2021-10-21 19:53:48,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:53:48,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942738632] [2021-10-21 19:53:48,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942738632] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:53:48,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:53:48,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:53:48,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490846392] [2021-10-21 19:53:48,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:53:48,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:53:48,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:53:48,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:53:48,171 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 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 19:53:48,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:53:48,271 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2021-10-21 19:53:48,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:53:48,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-10-21 19:53:48,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:53:48,274 INFO L225 Difference]: With dead ends: 60 [2021-10-21 19:53:48,274 INFO L226 Difference]: Without dead ends: 56 [2021-10-21 19:53:48,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:53:48,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-21 19:53:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 35. [2021-10-21 19:53:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 19:53:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-10-21 19:53:48,285 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 11 [2021-10-21 19:53:48,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:53:48,286 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-10-21 19:53:48,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 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 19:53:48,287 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-10-21 19:53:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:53:48,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:53:48,288 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:53:48,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:53:48,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:48,497 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:53:48,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:53:48,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1815125850, now seen corresponding path program 1 times [2021-10-21 19:53:48,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:53:48,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631601393] [2021-10-21 19:53:48,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:48,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:53:48,544 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:53:48,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714004792] [2021-10-21 19:53:48,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:48,549 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:48,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:53:48,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:53:48,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:53:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:53:48,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:53:48,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:53:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:53:48,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:53:48,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631601393] [2021-10-21 19:53:48,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:53:48,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714004792] [2021-10-21 19:53:48,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714004792] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:53:48,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:53:48,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:53:48,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983708600] [2021-10-21 19:53:48,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:53:48,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:53:48,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:53:48,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:53:48,739 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 19:53:48,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:53:48,805 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2021-10-21 19:53:48,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:53:48,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2021-10-21 19:53:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:53:48,808 INFO L225 Difference]: With dead ends: 56 [2021-10-21 19:53:48,808 INFO L226 Difference]: Without dead ends: 54 [2021-10-21 19:53:48,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:53:48,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-21 19:53:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2021-10-21 19:53:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:53:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2021-10-21 19:53:48,820 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 13 [2021-10-21 19:53:48,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:53:48,820 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2021-10-21 19:53:48,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 19:53:48,821 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2021-10-21 19:53:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 19:53:48,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:53:48,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:53:48,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:53:49,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:49,042 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:53:49,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:53:49,042 INFO L82 PathProgramCache]: Analyzing trace with hash -579062807, now seen corresponding path program 1 times [2021-10-21 19:53:49,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:53:49,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443159887] [2021-10-21 19:53:49,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:49,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:53:49,067 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:53:49,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089214988] [2021-10-21 19:53:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:49,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:49,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:53:49,085 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:53:49,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:53:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:53:49,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 19:53:49,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:53:49,499 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 19:53:49,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:53:49,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443159887] [2021-10-21 19:53:49,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:53:49,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089214988] [2021-10-21 19:53:49,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089214988] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:53:49,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:53:49,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:53:49,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560729736] [2021-10-21 19:53:49,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:53:49,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:53:49,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:53:49,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:53:49,507 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 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 19:53:49,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:53:49,917 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2021-10-21 19:53:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:53:49,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-10-21 19:53:49,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:53:49,918 INFO L225 Difference]: With dead ends: 71 [2021-10-21 19:53:49,919 INFO L226 Difference]: Without dead ends: 69 [2021-10-21 19:53:49,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 315.3ms TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:53:49,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-21 19:53:49,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2021-10-21 19:53:49,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 46 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:53:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-10-21 19:53:49,928 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 15 [2021-10-21 19:53:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:53:49,928 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-10-21 19:53:49,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 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 19:53:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-10-21 19:53:49,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:53:49,929 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:53:49,929 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:53:49,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:53:50,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:50,146 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:53:50,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:53:50,147 INFO L82 PathProgramCache]: Analyzing trace with hash -977126190, now seen corresponding path program 1 times [2021-10-21 19:53:50,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:53:50,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230799908] [2021-10-21 19:53:50,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:50,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:53:50,186 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:53:50,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395947411] [2021-10-21 19:53:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:50,191 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:50,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:53:50,192 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:53:50,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:53:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:53:50,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:53:50,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:53:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:53:50,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:53:50,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230799908] [2021-10-21 19:53:50,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:53:50,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395947411] [2021-10-21 19:53:50,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395947411] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:53:50,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:53:50,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 19:53:50,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956760605] [2021-10-21 19:53:50,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:53:50,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:53:50,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:53:50,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:53:50,439 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 19:53:50,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:53:50,644 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2021-10-21 19:53:50,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:53:50,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-10-21 19:53:50,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:53:50,651 INFO L225 Difference]: With dead ends: 136 [2021-10-21 19:53:50,651 INFO L226 Difference]: Without dead ends: 132 [2021-10-21 19:53:50,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:53:50,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-21 19:53:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 71. [2021-10-21 19:53:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 70 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 19:53:50,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2021-10-21 19:53:50,688 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 16 [2021-10-21 19:53:50,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:53:50,688 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2021-10-21 19:53:50,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 19:53:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2021-10-21 19:53:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:53:50,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:53:50,691 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:53:50,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:53:50,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:50,917 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:53:50,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:53:50,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1866548172, now seen corresponding path program 1 times [2021-10-21 19:53:50,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:53:50,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885524919] [2021-10-21 19:53:50,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:50,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:53:50,944 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:53:50,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612207389] [2021-10-21 19:53:50,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:50,966 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:50,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:53:50,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:53:51,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:53:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:53:51,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:53:51,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:53:51,316 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 19:53:51,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:53:51,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885524919] [2021-10-21 19:53:51,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:53:51,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612207389] [2021-10-21 19:53:51,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612207389] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:53:51,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:53:51,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:53:51,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139049025] [2021-10-21 19:53:51,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:53:51,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:53:51,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:53:51,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:53:51,320 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 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 19:53:51,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:53:51,547 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2021-10-21 19:53:51,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:53:51,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-10-21 19:53:51,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:53:51,548 INFO L225 Difference]: With dead ends: 91 [2021-10-21 19:53:51,548 INFO L226 Difference]: Without dead ends: 89 [2021-10-21 19:53:51,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 140.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:53:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-21 19:53:51,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2021-10-21 19:53:51,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.3066666666666666) internal successors, (98), 79 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 19:53:51,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2021-10-21 19:53:51,573 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 17 [2021-10-21 19:53:51,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:53:51,573 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2021-10-21 19:53:51,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 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 19:53:51,573 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2021-10-21 19:53:51,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:53:51,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:53:51,574 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:53:51,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:53:51,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-21 19:53:51,778 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:53:51,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:53:51,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1566281359, now seen corresponding path program 1 times [2021-10-21 19:53:51,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:53:51,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845096801] [2021-10-21 19:53:51,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:51,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:53:51,812 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:53:51,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210687384] [2021-10-21 19:53:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:51,813 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:51,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:53:51,814 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:53:51,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:53:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:53:51,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:53:51,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:53:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:53:52,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:53:52,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845096801] [2021-10-21 19:53:52,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:53:52,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210687384] [2021-10-21 19:53:52,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210687384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:53:52,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:53:52,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 19:53:52,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728174405] [2021-10-21 19:53:52,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:53:52,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:53:52,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:53:52,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:53:52,226 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 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 19:53:52,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:53:52,367 INFO L93 Difference]: Finished difference Result 131 states and 156 transitions. [2021-10-21 19:53:52,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:53:52,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-10-21 19:53:52,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:53:52,369 INFO L225 Difference]: With dead ends: 131 [2021-10-21 19:53:52,369 INFO L226 Difference]: Without dead ends: 129 [2021-10-21 19:53:52,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 70.9ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:53:52,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-21 19:53:52,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 112. [2021-10-21 19:53:52,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.3271028037383177) internal successors, (142), 111 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 19:53:52,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 142 transitions. [2021-10-21 19:53:52,406 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 142 transitions. Word has length 18 [2021-10-21 19:53:52,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:53:52,407 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 142 transitions. [2021-10-21 19:53:52,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 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 19:53:52,407 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 142 transitions. [2021-10-21 19:53:52,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 19:53:52,408 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:53:52,408 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:53:52,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:53:52,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-21 19:53:52,627 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:53:52,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:53:52,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1543378865, now seen corresponding path program 1 times [2021-10-21 19:53:52,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:53:52,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624173017] [2021-10-21 19:53:52,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:52,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:53:52,652 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:53:52,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685864955] [2021-10-21 19:53:52,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:52,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:52,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:53:52,661 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:53:52,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:53:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:53:52,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:53:52,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:53:52,893 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 19:53:52,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:53:52,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624173017] [2021-10-21 19:53:52,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:53:52,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685864955] [2021-10-21 19:53:52,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685864955] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:53:52,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:53:52,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:53:52,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877326534] [2021-10-21 19:53:52,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:53:52,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:53:52,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:53:52,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:53:52,898 INFO L87 Difference]: Start difference. First operand 112 states and 142 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 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 19:53:53,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:53:53,001 INFO L93 Difference]: Finished difference Result 222 states and 283 transitions. [2021-10-21 19:53:53,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:53:53,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-10-21 19:53:53,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:53:53,005 INFO L225 Difference]: With dead ends: 222 [2021-10-21 19:53:53,005 INFO L226 Difference]: Without dead ends: 220 [2021-10-21 19:53:53,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:53:53,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-21 19:53:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 160. [2021-10-21 19:53:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.2967741935483872) internal successors, (201), 159 states have internal predecessors, (201), 0 states have call successors, (0), 0 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 19:53:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 201 transitions. [2021-10-21 19:53:53,031 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 201 transitions. Word has length 19 [2021-10-21 19:53:53,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:53:53,031 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 201 transitions. [2021-10-21 19:53:53,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 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 19:53:53,032 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 201 transitions. [2021-10-21 19:53:53,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 19:53:53,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:53:53,033 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:53:53,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:53:53,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:53,249 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:53:53,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:53:53,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1957989266, now seen corresponding path program 1 times [2021-10-21 19:53:53,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:53:53,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220428190] [2021-10-21 19:53:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:53,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:53:53,265 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:53:53,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620992460] [2021-10-21 19:53:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:53,266 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:53,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:53:53,267 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:53:53,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 19:53:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:53:53,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 19:53:53,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:53:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:53:53,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:53:53,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220428190] [2021-10-21 19:53:53,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:53:53,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620992460] [2021-10-21 19:53:53,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620992460] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:53:53,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:53:53,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 19:53:53,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991890454] [2021-10-21 19:53:53,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:53:53,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:53:53,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:53:53,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:53:53,731 INFO L87 Difference]: Start difference. First operand 160 states and 201 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 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 19:53:53,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:53:53,913 INFO L93 Difference]: Finished difference Result 175 states and 210 transitions. [2021-10-21 19:53:53,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:53:53,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-10-21 19:53:53,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:53:53,915 INFO L225 Difference]: With dead ends: 175 [2021-10-21 19:53:53,915 INFO L226 Difference]: Without dead ends: 173 [2021-10-21 19:53:53,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:53:53,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-21 19:53:53,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 160. [2021-10-21 19:53:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.2838709677419355) internal successors, (199), 159 states have internal predecessors, (199), 0 states have call successors, (0), 0 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 19:53:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 199 transitions. [2021-10-21 19:53:53,938 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 199 transitions. Word has length 20 [2021-10-21 19:53:53,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:53:53,938 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 199 transitions. [2021-10-21 19:53:53,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 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 19:53:53,939 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 199 transitions. [2021-10-21 19:53:53,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:53:53,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:53:53,940 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:53:53,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:53:54,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-21 19:53:54,165 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:53:54,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:53:54,166 INFO L82 PathProgramCache]: Analyzing trace with hash 432166197, now seen corresponding path program 1 times [2021-10-21 19:53:54,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:53:54,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187538137] [2021-10-21 19:53:54,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:54,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:53:54,196 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:53:54,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354590453] [2021-10-21 19:53:54,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:54,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:54,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:53:54,204 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:53:54,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 19:53:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:53:54,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 19:53:54,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:53:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:53:54,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:53:54,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187538137] [2021-10-21 19:53:54,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:53:54,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354590453] [2021-10-21 19:53:54,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354590453] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:53:54,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:53:54,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 19:53:54,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733543003] [2021-10-21 19:53:54,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:53:54,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:53:54,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:53:54,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:53:54,607 INFO L87 Difference]: Start difference. First operand 160 states and 199 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 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 19:53:54,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:53:54,854 INFO L93 Difference]: Finished difference Result 273 states and 324 transitions. [2021-10-21 19:53:54,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:53:54,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-10-21 19:53:54,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:53:54,857 INFO L225 Difference]: With dead ends: 273 [2021-10-21 19:53:54,858 INFO L226 Difference]: Without dead ends: 271 [2021-10-21 19:53:54,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 121.5ms TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:53:54,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-10-21 19:53:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 194. [2021-10-21 19:53:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.2751322751322751) internal successors, (241), 193 states have internal predecessors, (241), 0 states have call successors, (0), 0 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 19:53:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 241 transitions. [2021-10-21 19:53:54,884 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 241 transitions. Word has length 22 [2021-10-21 19:53:54,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:53:54,886 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 241 transitions. [2021-10-21 19:53:54,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 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 19:53:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 241 transitions. [2021-10-21 19:53:54,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:53:54,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:53:54,887 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:53:54,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:53:55,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:55,101 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:53:55,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:53:55,101 INFO L82 PathProgramCache]: Analyzing trace with hash 50113094, now seen corresponding path program 2 times [2021-10-21 19:53:55,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:53:55,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293662976] [2021-10-21 19:53:55,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:55,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:53:55,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:53:55,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048284141] [2021-10-21 19:53:55,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:53:55,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:55,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:53:55,114 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:53:55,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 19:53:55,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:53:55,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:53:55,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:53:55,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:53:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:53:55,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:53:55,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293662976] [2021-10-21 19:53:55,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:53:55,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048284141] [2021-10-21 19:53:55,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048284141] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:53:55,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:53:55,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:53:55,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320842429] [2021-10-21 19:53:55,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:53:55,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:53:55,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:53:55,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:53:55,335 INFO L87 Difference]: Start difference. First operand 194 states and 241 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 19:53:55,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:53:55,428 INFO L93 Difference]: Finished difference Result 287 states and 351 transitions. [2021-10-21 19:53:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:53:55,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-10-21 19:53:55,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:53:55,431 INFO L225 Difference]: With dead ends: 287 [2021-10-21 19:53:55,431 INFO L226 Difference]: Without dead ends: 205 [2021-10-21 19:53:55,432 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 19.5ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:53:55,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-10-21 19:53:55,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 151. [2021-10-21 19:53:55,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 146 states have (on average 1.226027397260274) internal successors, (179), 150 states have internal predecessors, (179), 0 states have call successors, (0), 0 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 19:53:55,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 179 transitions. [2021-10-21 19:53:55,451 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 179 transitions. Word has length 23 [2021-10-21 19:53:55,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:53:55,452 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 179 transitions. [2021-10-21 19:53:55,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 19:53:55,452 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 179 transitions. [2021-10-21 19:53:55,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-21 19:53:55,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:53:55,453 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:53:55,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:53:55,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:55,671 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:53:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:53:55,672 INFO L82 PathProgramCache]: Analyzing trace with hash -710666819, now seen corresponding path program 1 times [2021-10-21 19:53:55,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:53:55,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889651042] [2021-10-21 19:53:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:55,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:53:55,691 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:53:55,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139424509] [2021-10-21 19:53:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:55,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:55,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:53:55,701 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:53:55,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 19:53:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:53:55,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-21 19:53:55,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:53:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:53:56,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:53:56,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889651042] [2021-10-21 19:53:56,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:53:56,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139424509] [2021-10-21 19:53:56,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139424509] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:53:56,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:53:56,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-21 19:53:56,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76119560] [2021-10-21 19:53:56,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:53:56,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:53:56,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:53:56,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:53:56,871 INFO L87 Difference]: Start difference. First operand 151 states and 179 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 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 19:53:57,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:53:57,343 INFO L93 Difference]: Finished difference Result 222 states and 255 transitions. [2021-10-21 19:53:57,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:53:57,344 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-21 19:53:57,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:53:57,346 INFO L225 Difference]: With dead ends: 222 [2021-10-21 19:53:57,346 INFO L226 Difference]: Without dead ends: 214 [2021-10-21 19:53:57,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 266.4ms TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:53:57,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-21 19:53:57,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 168. [2021-10-21 19:53:57,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.2147239263803682) internal successors, (198), 167 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:53:57,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 198 transitions. [2021-10-21 19:53:57,366 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 198 transitions. Word has length 28 [2021-10-21 19:53:57,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:53:57,367 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 198 transitions. [2021-10-21 19:53:57,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 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 19:53:57,367 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 198 transitions. [2021-10-21 19:53:57,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-21 19:53:57,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:53:57,368 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:53:57,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:53:57,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:57,593 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:53:57,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:53:57,594 INFO L82 PathProgramCache]: Analyzing trace with hash -584499604, now seen corresponding path program 1 times [2021-10-21 19:53:57,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:53:57,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410831746] [2021-10-21 19:53:57,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:57,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:53:57,607 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:53:57,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769020511] [2021-10-21 19:53:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:57,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:57,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:53:57,609 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:53:57,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-21 19:53:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:53:57,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:53:57,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:53:58,182 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:53:58,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:53:58,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410831746] [2021-10-21 19:53:58,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:53:58,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769020511] [2021-10-21 19:53:58,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769020511] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:53:58,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:53:58,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-21 19:53:58,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554300896] [2021-10-21 19:53:58,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:53:58,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:53:58,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:53:58,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:53:58,186 INFO L87 Difference]: Start difference. First operand 168 states and 198 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 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 19:53:58,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:53:58,589 INFO L93 Difference]: Finished difference Result 217 states and 252 transitions. [2021-10-21 19:53:58,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:53:58,590 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-21 19:53:58,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:53:58,593 INFO L225 Difference]: With dead ends: 217 [2021-10-21 19:53:58,593 INFO L226 Difference]: Without dead ends: 215 [2021-10-21 19:53:58,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 290.3ms TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:53:58,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-21 19:53:58,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 186. [2021-10-21 19:53:58,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 181 states have (on average 1.2099447513812154) internal successors, (219), 185 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 19:53:58,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 219 transitions. [2021-10-21 19:53:58,620 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 219 transitions. Word has length 28 [2021-10-21 19:53:58,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:53:58,620 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 219 transitions. [2021-10-21 19:53:58,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 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 19:53:58,620 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 219 transitions. [2021-10-21 19:53:58,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 19:53:58,625 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:53:58,626 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-21 19:53:58,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:53:58,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:58,846 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:53:58,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:53:58,847 INFO L82 PathProgramCache]: Analyzing trace with hash 878393524, now seen corresponding path program 2 times [2021-10-21 19:53:58,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:53:58,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178221300] [2021-10-21 19:53:58,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:58,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:53:58,861 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:53:58,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364926804] [2021-10-21 19:53:58,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:53:58,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:58,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:53:58,863 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:53:58,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 19:53:59,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:53:59,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:53:59,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:53:59,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:53:59,284 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:53:59,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:53:59,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178221300] [2021-10-21 19:53:59,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:53:59,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364926804] [2021-10-21 19:53:59,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364926804] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:53:59,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:53:59,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 19:53:59,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918207064] [2021-10-21 19:53:59,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:53:59,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:53:59,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:53:59,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:53:59,289 INFO L87 Difference]: Start difference. First operand 186 states and 219 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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 19:53:59,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:53:59,681 INFO L93 Difference]: Finished difference Result 407 states and 478 transitions. [2021-10-21 19:53:59,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:53:59,682 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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 19:53:59,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:53:59,685 INFO L225 Difference]: With dead ends: 407 [2021-10-21 19:53:59,685 INFO L226 Difference]: Without dead ends: 403 [2021-10-21 19:53:59,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 165.9ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:53:59,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-10-21 19:53:59,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 226. [2021-10-21 19:53:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 221 states have (on average 1.2307692307692308) internal successors, (272), 225 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:53:59,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 272 transitions. [2021-10-21 19:53:59,723 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 272 transitions. Word has length 33 [2021-10-21 19:53:59,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:53:59,723 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 272 transitions. [2021-10-21 19:53:59,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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 19:53:59,724 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 272 transitions. [2021-10-21 19:53:59,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 19:53:59,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:53:59,726 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:53:59,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:53:59,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-21 19:53:59,953 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:53:59,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:53:59,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1004560739, now seen corresponding path program 1 times [2021-10-21 19:53:59,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:53:59,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680159971] [2021-10-21 19:53:59,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:59,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:53:59,975 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:53:59,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907215554] [2021-10-21 19:53:59,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:53:59,983 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:53:59,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:53:59,984 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:00,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-21 19:54:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:00,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-21 19:54:00,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:00,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:00,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680159971] [2021-10-21 19:54:00,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:00,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907215554] [2021-10-21 19:54:00,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907215554] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:00,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:00,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-21 19:54:00,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347904469] [2021-10-21 19:54:00,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:54:00,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:00,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:54:00,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:54:00,723 INFO L87 Difference]: Start difference. First operand 226 states and 272 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 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 19:54:01,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:01,221 INFO L93 Difference]: Finished difference Result 385 states and 454 transitions. [2021-10-21 19:54:01,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:54:01,222 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 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 19:54:01,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:01,225 INFO L225 Difference]: With dead ends: 385 [2021-10-21 19:54:01,225 INFO L226 Difference]: Without dead ends: 383 [2021-10-21 19:54:01,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 240.3ms TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2021-10-21 19:54:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-10-21 19:54:01,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 266. [2021-10-21 19:54:01,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 261 states have (on average 1.2260536398467432) internal successors, (320), 265 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 19:54:01,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 320 transitions. [2021-10-21 19:54:01,269 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 320 transitions. Word has length 33 [2021-10-21 19:54:01,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:01,269 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 320 transitions. [2021-10-21 19:54:01,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 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 19:54:01,270 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 320 transitions. [2021-10-21 19:54:01,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-21 19:54:01,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:01,271 INFO L512 BasicCegarLoop]: trace histogram [3, 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 19:54:01,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:01,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-21 19:54:01,485 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:54:01,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:01,486 INFO L82 PathProgramCache]: Analyzing trace with hash -741882838, now seen corresponding path program 1 times [2021-10-21 19:54:01,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:01,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448006183] [2021-10-21 19:54:01,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:01,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:01,498 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:01,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495009872] [2021-10-21 19:54:01,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:01,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:01,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:01,508 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:01,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-21 19:54:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:01,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:54:01,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:01,895 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:54:01,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:01,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448006183] [2021-10-21 19:54:01,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:01,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495009872] [2021-10-21 19:54:01,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495009872] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:54:01,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:54:01,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:54:01,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495867105] [2021-10-21 19:54:01,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:54:01,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:01,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:54:01,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:54:01,899 INFO L87 Difference]: Start difference. First operand 266 states and 320 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 19:54:01,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:01,985 INFO L93 Difference]: Finished difference Result 476 states and 578 transitions. [2021-10-21 19:54:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:54:01,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 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 34 [2021-10-21 19:54:01,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:01,988 INFO L225 Difference]: With dead ends: 476 [2021-10-21 19:54:01,989 INFO L226 Difference]: Without dead ends: 283 [2021-10-21 19:54:01,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:54:01,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-10-21 19:54:02,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 257. [2021-10-21 19:54:02,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 252 states have (on average 1.2222222222222223) internal successors, (308), 256 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 19:54:02,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 308 transitions. [2021-10-21 19:54:02,050 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 308 transitions. Word has length 34 [2021-10-21 19:54:02,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:02,055 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 308 transitions. [2021-10-21 19:54:02,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 19:54:02,055 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 308 transitions. [2021-10-21 19:54:02,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-21 19:54:02,056 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:02,056 INFO L512 BasicCegarLoop]: trace histogram [3, 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 19:54:02,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:02,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-21 19:54:02,281 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:54:02,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:02,282 INFO L82 PathProgramCache]: Analyzing trace with hash -835022368, now seen corresponding path program 2 times [2021-10-21 19:54:02,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:02,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007773631] [2021-10-21 19:54:02,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:02,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:02,294 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:02,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165238417] [2021-10-21 19:54:02,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:54:02,295 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:02,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:02,296 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:02,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-21 19:54:02,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 19:54:02,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:02,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:54:02,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:54:02,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:02,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007773631] [2021-10-21 19:54:02,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:02,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165238417] [2021-10-21 19:54:02,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165238417] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:54:02,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:54:02,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:54:02,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720832793] [2021-10-21 19:54:02,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:54:02,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:02,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:54:02,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:54:02,755 INFO L87 Difference]: Start difference. First operand 257 states and 308 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 19:54:02,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:02,849 INFO L93 Difference]: Finished difference Result 297 states and 356 transitions. [2021-10-21 19:54:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:54:02,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 34 [2021-10-21 19:54:02,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:02,852 INFO L225 Difference]: With dead ends: 297 [2021-10-21 19:54:02,852 INFO L226 Difference]: Without dead ends: 295 [2021-10-21 19:54:02,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:54:02,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-21 19:54:02,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 284. [2021-10-21 19:54:02,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 279 states have (on average 1.2222222222222223) internal successors, (341), 283 states have internal predecessors, (341), 0 states have call successors, (0), 0 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 19:54:02,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 341 transitions. [2021-10-21 19:54:02,903 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 341 transitions. Word has length 34 [2021-10-21 19:54:02,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:02,903 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 341 transitions. [2021-10-21 19:54:02,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 19:54:02,904 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 341 transitions. [2021-10-21 19:54:02,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-21 19:54:02,905 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:02,905 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:02,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-10-21 19:54:03,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:03,133 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:54:03,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:03,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1985668623, now seen corresponding path program 1 times [2021-10-21 19:54:03,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:03,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794396830] [2021-10-21 19:54:03,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:03,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:03,144 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:03,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81687721] [2021-10-21 19:54:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:03,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:03,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:03,146 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:03,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-21 19:54:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:03,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 19:54:03,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:54:03,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:03,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794396830] [2021-10-21 19:54:03,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:03,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81687721] [2021-10-21 19:54:03,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81687721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:03,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:03,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 19:54:03,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177791645] [2021-10-21 19:54:03,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:54:03,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:03,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:54:03,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:54:03,689 INFO L87 Difference]: Start difference. First operand 284 states and 341 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 19:54:03,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:03,885 INFO L93 Difference]: Finished difference Result 286 states and 342 transitions. [2021-10-21 19:54:03,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:54:03,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 35 [2021-10-21 19:54:03,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:03,888 INFO L225 Difference]: With dead ends: 286 [2021-10-21 19:54:03,888 INFO L226 Difference]: Without dead ends: 282 [2021-10-21 19:54:03,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 90.7ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:54:03,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-10-21 19:54:03,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 154. [2021-10-21 19:54:03,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 150 states have (on average 1.1533333333333333) internal successors, (173), 153 states have internal predecessors, (173), 0 states have call successors, (0), 0 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 19:54:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 173 transitions. [2021-10-21 19:54:03,933 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 173 transitions. Word has length 35 [2021-10-21 19:54:03,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:03,933 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 173 transitions. [2021-10-21 19:54:03,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 19:54:03,934 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 173 transitions. [2021-10-21 19:54:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 19:54:03,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:03,934 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:03,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:04,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-21 19:54:04,153 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:54:04,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:04,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1261910412, now seen corresponding path program 1 times [2021-10-21 19:54:04,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:04,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15707411] [2021-10-21 19:54:04,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:04,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:04,171 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:04,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819550956] [2021-10-21 19:54:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:04,172 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:04,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:04,173 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:04,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-21 19:54:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:04,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 70 conjunts are in the unsatisfiable core [2021-10-21 19:54:04,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:06,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:06,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15707411] [2021-10-21 19:54:06,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:06,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819550956] [2021-10-21 19:54:06,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819550956] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:06,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:06,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-21 19:54:06,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913866030] [2021-10-21 19:54:06,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 19:54:06,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:06,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 19:54:06,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:54:06,037 INFO L87 Difference]: Start difference. First operand 154 states and 173 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 19:54:07,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:07,195 INFO L93 Difference]: Finished difference Result 283 states and 312 transitions. [2021-10-21 19:54:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 19:54:07,195 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-10-21 19:54:07,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:07,197 INFO L225 Difference]: With dead ends: 283 [2021-10-21 19:54:07,197 INFO L226 Difference]: Without dead ends: 281 [2021-10-21 19:54:07,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 898.7ms TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2021-10-21 19:54:07,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-10-21 19:54:07,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 145. [2021-10-21 19:54:07,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 141 states have (on average 1.1560283687943262) internal successors, (163), 144 states have internal predecessors, (163), 0 states have call successors, (0), 0 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 19:54:07,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 163 transitions. [2021-10-21 19:54:07,230 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 163 transitions. Word has length 37 [2021-10-21 19:54:07,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:07,231 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 163 transitions. [2021-10-21 19:54:07,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 19:54:07,231 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 163 transitions. [2021-10-21 19:54:07,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 19:54:07,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:07,232 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-21 19:54:07,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:07,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:07,445 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:54:07,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:07,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1353666624, now seen corresponding path program 1 times [2021-10-21 19:54:07,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:07,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533258154] [2021-10-21 19:54:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:07,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:07,457 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:07,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603613006] [2021-10-21 19:54:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:07,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:07,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:07,469 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:07,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-21 19:54:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:07,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-21 19:54:07,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:09,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:09,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533258154] [2021-10-21 19:54:09,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:09,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603613006] [2021-10-21 19:54:09,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603613006] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:09,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:09,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-21 19:54:09,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525454955] [2021-10-21 19:54:09,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:54:09,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:09,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:54:09,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:54:09,151 INFO L87 Difference]: Start difference. First operand 145 states and 163 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 19:54:09,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:09,842 INFO L93 Difference]: Finished difference Result 319 states and 357 transitions. [2021-10-21 19:54:09,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 19:54:09,842 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-10-21 19:54:09,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:09,845 INFO L225 Difference]: With dead ends: 319 [2021-10-21 19:54:09,845 INFO L226 Difference]: Without dead ends: 311 [2021-10-21 19:54:09,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 323.4ms TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:54:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-10-21 19:54:09,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 175. [2021-10-21 19:54:09,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 171 states have (on average 1.152046783625731) internal successors, (197), 174 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 19:54:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 197 transitions. [2021-10-21 19:54:09,904 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 197 transitions. Word has length 37 [2021-10-21 19:54:09,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:09,905 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 197 transitions. [2021-10-21 19:54:09,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 19:54:09,905 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 197 transitions. [2021-10-21 19:54:09,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 19:54:09,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:09,906 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:09,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:10,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:10,133 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:54:10,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:10,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1479833839, now seen corresponding path program 2 times [2021-10-21 19:54:10,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:10,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184424030] [2021-10-21 19:54:10,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:10,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:10,144 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:10,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67091745] [2021-10-21 19:54:10,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:54:10,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:10,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:10,149 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:10,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-21 19:54:10,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:54:10,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:10,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 19:54:10,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:10,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:10,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184424030] [2021-10-21 19:54:10,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:10,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67091745] [2021-10-21 19:54:10,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67091745] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:10,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:10,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 19:54:10,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72534128] [2021-10-21 19:54:10,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:54:10,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:10,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:54:10,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:54:10,910 INFO L87 Difference]: Start difference. First operand 175 states and 197 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 19:54:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:11,276 INFO L93 Difference]: Finished difference Result 285 states and 320 transitions. [2021-10-21 19:54:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:54:11,277 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-10-21 19:54:11,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:11,278 INFO L225 Difference]: With dead ends: 285 [2021-10-21 19:54:11,278 INFO L226 Difference]: Without dead ends: 283 [2021-10-21 19:54:11,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 215.4ms TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:54:11,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-10-21 19:54:11,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 239. [2021-10-21 19:54:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 235 states have (on average 1.1617021276595745) internal successors, (273), 238 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:11,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 273 transitions. [2021-10-21 19:54:11,361 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 273 transitions. Word has length 37 [2021-10-21 19:54:11,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:11,361 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 273 transitions. [2021-10-21 19:54:11,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 19:54:11,361 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 273 transitions. [2021-10-21 19:54:11,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-21 19:54:11,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:11,362 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 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 19:54:11,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:11,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-21 19:54:11,575 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:54:11,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:11,576 INFO L82 PathProgramCache]: Analyzing trace with hash 62559017, now seen corresponding path program 2 times [2021-10-21 19:54:11,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:11,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920905009] [2021-10-21 19:54:11,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:11,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:11,587 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:11,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265052221] [2021-10-21 19:54:11,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:54:11,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:11,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:11,589 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:11,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-21 19:54:12,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:54:12,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:12,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 80 conjunts are in the unsatisfiable core [2021-10-21 19:54:12,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:15,200 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:15,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:15,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920905009] [2021-10-21 19:54:15,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:15,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265052221] [2021-10-21 19:54:15,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265052221] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:15,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:15,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-10-21 19:54:15,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208538303] [2021-10-21 19:54:15,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-21 19:54:15,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:15,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 19:54:15,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:54:15,203 INFO L87 Difference]: Start difference. First operand 239 states and 273 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 19:54:18,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:18,595 INFO L93 Difference]: Finished difference Result 379 states and 423 transitions. [2021-10-21 19:54:18,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 19:54:18,598 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-10-21 19:54:18,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:18,600 INFO L225 Difference]: With dead ends: 379 [2021-10-21 19:54:18,600 INFO L226 Difference]: Without dead ends: 372 [2021-10-21 19:54:18,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 3011.2ms TimeCoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2021-10-21 19:54:18,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-10-21 19:54:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 229. [2021-10-21 19:54:18,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 226 states have (on average 1.163716814159292) internal successors, (263), 228 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:18,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 263 transitions. [2021-10-21 19:54:18,687 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 263 transitions. Word has length 42 [2021-10-21 19:54:18,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:18,687 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 263 transitions. [2021-10-21 19:54:18,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 19:54:18,688 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 263 transitions. [2021-10-21 19:54:18,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-21 19:54:18,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:18,689 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:18,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:18,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-21 19:54:18,917 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:54:18,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:18,918 INFO L82 PathProgramCache]: Analyzing trace with hash 188726232, now seen corresponding path program 2 times [2021-10-21 19:54:18,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:18,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351636001] [2021-10-21 19:54:18,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:18,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:18,927 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:18,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835299933] [2021-10-21 19:54:18,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:54:18,928 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:18,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:18,929 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:18,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-21 19:54:19,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:54:19,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:19,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 19:54:19,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:19,880 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:19,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:19,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351636001] [2021-10-21 19:54:19,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:19,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835299933] [2021-10-21 19:54:19,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835299933] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:19,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:19,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 19:54:19,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866513594] [2021-10-21 19:54:19,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:54:19,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:19,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:54:19,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:54:19,883 INFO L87 Difference]: Start difference. First operand 229 states and 263 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 19:54:20,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:20,515 INFO L93 Difference]: Finished difference Result 369 states and 414 transitions. [2021-10-21 19:54:20,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-21 19:54:20,516 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-10-21 19:54:20,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:20,518 INFO L225 Difference]: With dead ends: 369 [2021-10-21 19:54:20,518 INFO L226 Difference]: Without dead ends: 367 [2021-10-21 19:54:20,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 274.4ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-10-21 19:54:20,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-10-21 19:54:20,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 183. [2021-10-21 19:54:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 180 states have (on average 1.1555555555555554) internal successors, (208), 182 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 19:54:20,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 208 transitions. [2021-10-21 19:54:20,576 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 208 transitions. Word has length 42 [2021-10-21 19:54:20,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:20,576 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 208 transitions. [2021-10-21 19:54:20,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 19:54:20,576 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 208 transitions. [2021-10-21 19:54:20,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-21 19:54:20,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:20,577 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:20,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:20,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-21 19:54:20,794 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:54:20,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:20,795 INFO L82 PathProgramCache]: Analyzing trace with hash -262948779, now seen corresponding path program 1 times [2021-10-21 19:54:20,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:20,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346931497] [2021-10-21 19:54:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:20,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:20,816 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:20,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541850987] [2021-10-21 19:54:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:20,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:20,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:20,819 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:20,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-21 19:54:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:21,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-21 19:54:21,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:54:21,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:21,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346931497] [2021-10-21 19:54:21,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:21,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541850987] [2021-10-21 19:54:21,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541850987] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:21,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:21,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-21 19:54:21,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866844458] [2021-10-21 19:54:21,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:54:21,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:21,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:54:21,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:54:21,900 INFO L87 Difference]: Start difference. First operand 183 states and 208 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 19:54:22,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:22,264 INFO L93 Difference]: Finished difference Result 302 states and 343 transitions. [2021-10-21 19:54:22,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:54:22,265 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 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 43 [2021-10-21 19:54:22,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:22,267 INFO L225 Difference]: With dead ends: 302 [2021-10-21 19:54:22,267 INFO L226 Difference]: Without dead ends: 298 [2021-10-21 19:54:22,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 127.2ms TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:54:22,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-21 19:54:22,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 216. [2021-10-21 19:54:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 213 states have (on average 1.1549295774647887) internal successors, (246), 215 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:22,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2021-10-21 19:54:22,342 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 43 [2021-10-21 19:54:22,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:22,342 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2021-10-21 19:54:22,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 19:54:22,343 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2021-10-21 19:54:22,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-21 19:54:22,343 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:22,343 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:22,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-21 19:54:22,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-21 19:54:22,569 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:54:22,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:22,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1218716055, now seen corresponding path program 1 times [2021-10-21 19:54:22,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:22,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706573620] [2021-10-21 19:54:22,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:22,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:22,579 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:22,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858489110] [2021-10-21 19:54:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:22,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:22,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:22,581 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:22,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-21 19:54:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:23,189 WARN L261 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 97 conjunts are in the unsatisfiable core [2021-10-21 19:54:23,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:25,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:25,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706573620] [2021-10-21 19:54:25,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:25,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858489110] [2021-10-21 19:54:25,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858489110] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:25,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:25,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-10-21 19:54:25,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704281121] [2021-10-21 19:54:25,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-21 19:54:25,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:25,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-21 19:54:25,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:54:25,531 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 19:54:27,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:27,250 INFO L93 Difference]: Finished difference Result 433 states and 483 transitions. [2021-10-21 19:54:27,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-21 19:54:27,251 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-10-21 19:54:27,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:27,253 INFO L225 Difference]: With dead ends: 433 [2021-10-21 19:54:27,254 INFO L226 Difference]: Without dead ends: 431 [2021-10-21 19:54:27,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1476.9ms TimeCoverageRelationStatistics Valid=212, Invalid=1270, Unknown=0, NotChecked=0, Total=1482 [2021-10-21 19:54:27,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-10-21 19:54:27,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 195. [2021-10-21 19:54:27,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 192 states have (on average 1.15625) internal successors, (222), 194 states have internal predecessors, (222), 0 states have call successors, (0), 0 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 19:54:27,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2021-10-21 19:54:27,331 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 46 [2021-10-21 19:54:27,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:27,331 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2021-10-21 19:54:27,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 19:54:27,332 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2021-10-21 19:54:27,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-21 19:54:27,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:27,333 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:27,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-10-21 19:54:27,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:27,549 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:54:27,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:27,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1094753844, now seen corresponding path program 3 times [2021-10-21 19:54:27,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:27,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686165638] [2021-10-21 19:54:27,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:27,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:27,559 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:27,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631278496] [2021-10-21 19:54:27,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:54:27,560 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:27,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:27,561 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:27,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-21 19:54:28,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-21 19:54:28,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:28,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-21 19:54:28,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-21 19:54:29,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:29,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686165638] [2021-10-21 19:54:29,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:29,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631278496] [2021-10-21 19:54:29,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631278496] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:29,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:29,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 19:54:29,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702654060] [2021-10-21 19:54:29,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:54:29,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:29,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:54:29,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:54:29,615 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 19:54:37,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:37,053 INFO L93 Difference]: Finished difference Result 313 states and 353 transitions. [2021-10-21 19:54:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:54:37,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 46 [2021-10-21 19:54:37,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:37,055 INFO L225 Difference]: With dead ends: 313 [2021-10-21 19:54:37,056 INFO L226 Difference]: Without dead ends: 311 [2021-10-21 19:54:37,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 5374.4ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:54:37,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-10-21 19:54:37,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 255. [2021-10-21 19:54:37,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 252 states have (on average 1.1587301587301588) internal successors, (292), 254 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 19:54:37,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 292 transitions. [2021-10-21 19:54:37,266 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 292 transitions. Word has length 46 [2021-10-21 19:54:37,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:37,267 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 292 transitions. [2021-10-21 19:54:37,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 19:54:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 292 transitions. [2021-10-21 19:54:37,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-21 19:54:37,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:37,269 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:37,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:37,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-21 19:54:37,469 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:54:37,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:37,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1396125471, now seen corresponding path program 1 times [2021-10-21 19:54:37,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:37,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130860797] [2021-10-21 19:54:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:37,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:37,487 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:37,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [436260609] [2021-10-21 19:54:37,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:37,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:37,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:37,489 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:37,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-21 19:54:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:38,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-21 19:54:38,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:39,047 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:39,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:39,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130860797] [2021-10-21 19:54:39,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:39,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436260609] [2021-10-21 19:54:39,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436260609] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:39,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:39,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-21 19:54:39,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946806790] [2021-10-21 19:54:39,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:54:39,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:39,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:54:39,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:54:39,050 INFO L87 Difference]: Start difference. First operand 255 states and 292 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:39,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:39,472 INFO L93 Difference]: Finished difference Result 417 states and 479 transitions. [2021-10-21 19:54:39,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:54:39,473 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-21 19:54:39,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:39,476 INFO L225 Difference]: With dead ends: 417 [2021-10-21 19:54:39,476 INFO L226 Difference]: Without dead ends: 413 [2021-10-21 19:54:39,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 126.1ms TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:54:39,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-10-21 19:54:39,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 288. [2021-10-21 19:54:39,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 285 states have (on average 1.1578947368421053) internal successors, (330), 287 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:39,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 330 transitions. [2021-10-21 19:54:39,597 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 330 transitions. Word has length 47 [2021-10-21 19:54:39,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:39,598 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 330 transitions. [2021-10-21 19:54:39,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:39,598 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 330 transitions. [2021-10-21 19:54:39,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-21 19:54:39,599 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:39,599 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:39,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-10-21 19:54:39,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-21 19:54:39,825 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:54:39,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:39,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1572879977, now seen corresponding path program 2 times [2021-10-21 19:54:39,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:39,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275280243] [2021-10-21 19:54:39,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:39,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:39,846 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:39,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357367494] [2021-10-21 19:54:39,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:54:39,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:39,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:39,848 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:39,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-21 19:54:40,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:54:40,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:40,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-21 19:54:40,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:41,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:41,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275280243] [2021-10-21 19:54:41,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:41,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357367494] [2021-10-21 19:54:41,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357367494] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:41,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:41,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-21 19:54:41,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136668990] [2021-10-21 19:54:41,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 19:54:41,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:41,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 19:54:41,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:54:41,819 INFO L87 Difference]: Start difference. First operand 288 states and 330 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 19:54:43,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:43,091 INFO L93 Difference]: Finished difference Result 489 states and 554 transitions. [2021-10-21 19:54:43,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 19:54:43,092 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-10-21 19:54:43,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:43,095 INFO L225 Difference]: With dead ends: 489 [2021-10-21 19:54:43,095 INFO L226 Difference]: Without dead ends: 487 [2021-10-21 19:54:43,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 549.7ms TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2021-10-21 19:54:43,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-10-21 19:54:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 305. [2021-10-21 19:54:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 302 states have (on average 1.1523178807947019) internal successors, (348), 304 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 19:54:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 348 transitions. [2021-10-21 19:54:43,211 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 348 transitions. Word has length 49 [2021-10-21 19:54:43,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:43,211 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 348 transitions. [2021-10-21 19:54:43,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 19:54:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 348 transitions. [2021-10-21 19:54:43,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-21 19:54:43,212 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:43,212 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:43,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-10-21 19:54:43,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-21 19:54:43,437 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:54:43,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:43,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1242600867, now seen corresponding path program 2 times [2021-10-21 19:54:43,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:43,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216797473] [2021-10-21 19:54:43,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:43,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:43,451 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:43,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007151526] [2021-10-21 19:54:43,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:54:43,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:43,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:43,457 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:43,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-21 19:54:44,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:54:44,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:44,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-21 19:54:44,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:45,657 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:45,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:45,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216797473] [2021-10-21 19:54:45,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:45,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007151526] [2021-10-21 19:54:45,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007151526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:45,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:45,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-21 19:54:45,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920722104] [2021-10-21 19:54:45,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 19:54:45,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:45,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:54:45,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:54:45,660 INFO L87 Difference]: Start difference. First operand 305 states and 348 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 19:54:46,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:46,530 INFO L93 Difference]: Finished difference Result 432 states and 488 transitions. [2021-10-21 19:54:46,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:54:46,530 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-21 19:54:46,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:46,533 INFO L225 Difference]: With dead ends: 432 [2021-10-21 19:54:46,533 INFO L226 Difference]: Without dead ends: 430 [2021-10-21 19:54:46,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 390.8ms TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2021-10-21 19:54:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-10-21 19:54:46,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 302. [2021-10-21 19:54:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 299 states have (on average 1.1505016722408026) internal successors, (344), 301 states have internal predecessors, (344), 0 states have call successors, (0), 0 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 19:54:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 344 transitions. [2021-10-21 19:54:46,658 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 344 transitions. Word has length 50 [2021-10-21 19:54:46,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:46,658 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 344 transitions. [2021-10-21 19:54:46,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 19:54:46,658 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 344 transitions. [2021-10-21 19:54:46,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-21 19:54:46,661 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:46,662 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:46,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:46,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-21 19:54:46,875 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:54:46,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:46,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1911139069, now seen corresponding path program 3 times [2021-10-21 19:54:46,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:46,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067057188] [2021-10-21 19:54:46,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:46,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:46,888 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:46,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621577971] [2021-10-21 19:54:46,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:54:46,889 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:46,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:46,890 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:46,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-21 19:54:47,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-21 19:54:47,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:47,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 19:54:47,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-21 19:54:50,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:50,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067057188] [2021-10-21 19:54:50,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:50,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621577971] [2021-10-21 19:54:50,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621577971] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:50,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:50,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 19:54:50,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009917092] [2021-10-21 19:54:50,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:54:50,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:50,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:54:50,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:54:50,970 INFO L87 Difference]: Start difference. First operand 302 states and 344 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 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 19:54:58,854 WARN L207 SmtUtils]: Spent 7.83 s on a formula simplification. DAG size of input: 26 DAG size of output: 14 [2021-10-21 19:55:01,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:55:01,224 INFO L93 Difference]: Finished difference Result 306 states and 347 transitions. [2021-10-21 19:55:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:55:01,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 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 51 [2021-10-21 19:55:01,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:55:01,226 INFO L225 Difference]: With dead ends: 306 [2021-10-21 19:55:01,226 INFO L226 Difference]: Without dead ends: 304 [2021-10-21 19:55:01,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 10687.6ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:55:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-21 19:55:01,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 173. [2021-10-21 19:55:01,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 171 states have (on average 1.1169590643274854) internal successors, (191), 172 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 19:55:01,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 191 transitions. [2021-10-21 19:55:01,304 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 191 transitions. Word has length 51 [2021-10-21 19:55:01,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:55:01,304 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 191 transitions. [2021-10-21 19:55:01,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 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 19:55:01,304 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 191 transitions. [2021-10-21 19:55:01,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-21 19:55:01,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:55:01,305 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:55:01,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-21 19:55:01,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:55:01,533 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:55:01,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:55:01,534 INFO L82 PathProgramCache]: Analyzing trace with hash -230789525, now seen corresponding path program 3 times [2021-10-21 19:55:01,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:55:01,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010417069] [2021-10-21 19:55:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:55:01,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:55:01,547 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:55:01,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915795059] [2021-10-21 19:55:01,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:55:01,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:55:01,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:55:01,548 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:55:01,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-21 19:55:02,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 19:55:02,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:55:02,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-21 19:55:02,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:55:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-21 19:55:03,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:55:03,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010417069] [2021-10-21 19:55:03,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:55:03,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915795059] [2021-10-21 19:55:03,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915795059] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:55:03,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:55:03,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 19:55:03,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363115620] [2021-10-21 19:55:03,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:55:03,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:55:03,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:55:03,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:55:03,529 INFO L87 Difference]: Start difference. First operand 173 states and 191 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:55:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:55:03,970 INFO L93 Difference]: Finished difference Result 308 states and 342 transitions. [2021-10-21 19:55:03,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:55:03,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-21 19:55:03,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:55:03,991 INFO L225 Difference]: With dead ends: 308 [2021-10-21 19:55:03,994 INFO L226 Difference]: Without dead ends: 304 [2021-10-21 19:55:03,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 210.2ms TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:55:03,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-21 19:55:04,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 203. [2021-10-21 19:55:04,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 201 states have (on average 1.1243781094527363) internal successors, (226), 202 states have internal predecessors, (226), 0 states have call successors, (0), 0 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 19:55:04,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 226 transitions. [2021-10-21 19:55:04,135 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 226 transitions. Word has length 53 [2021-10-21 19:55:04,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:55:04,135 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 226 transitions. [2021-10-21 19:55:04,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:55:04,136 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 226 transitions. [2021-10-21 19:55:04,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-21 19:55:04,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:55:04,137 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:55:04,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-21 19:55:04,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:55:04,353 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:55:04,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:55:04,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1254528046, now seen corresponding path program 3 times [2021-10-21 19:55:04,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:55:04,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806216816] [2021-10-21 19:55:04,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:55:04,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:55:04,365 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:55:04,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443442986] [2021-10-21 19:55:04,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:55:04,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:55:04,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:55:04,367 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:55:04,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-21 19:55:05,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 19:55:05,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:55:05,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-21 19:55:05,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:55:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-21 19:55:08,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:55:08,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806216816] [2021-10-21 19:55:08,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:55:08,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443442986] [2021-10-21 19:55:08,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443442986] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:55:08,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:55:08,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-21 19:55:08,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115179227] [2021-10-21 19:55:08,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:55:08,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:55:08,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:55:08,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:55:08,406 INFO L87 Difference]: Start difference. First operand 203 states and 226 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:55:17,679 WARN L207 SmtUtils]: Spent 6.39 s on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2021-10-21 19:56:01,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:56:01,410 INFO L93 Difference]: Finished difference Result 339 states and 375 transitions. [2021-10-21 19:56:01,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 19:56:01,411 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-21 19:56:01,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:56:01,413 INFO L225 Difference]: With dead ends: 339 [2021-10-21 19:56:01,413 INFO L226 Difference]: Without dead ends: 337 [2021-10-21 19:56:01,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 34417.5ms TimeCoverageRelationStatistics Valid=172, Invalid=575, Unknown=9, NotChecked=0, Total=756 [2021-10-21 19:56:01,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-10-21 19:56:01,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 186. [2021-10-21 19:56:01,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 184 states have (on average 1.1304347826086956) internal successors, (208), 185 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 19:56:01,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 208 transitions. [2021-10-21 19:56:01,496 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 208 transitions. Word has length 54 [2021-10-21 19:56:01,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:56:01,497 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 208 transitions. [2021-10-21 19:56:01,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 208 transitions. [2021-10-21 19:56:01,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-21 19:56:01,498 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:56:01,498 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:01,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-21 19:56:01,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:56:01,712 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:56:01,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:01,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1302063636, now seen corresponding path program 4 times [2021-10-21 19:56:01,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:01,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927785098] [2021-10-21 19:56:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:01,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:01,724 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:56:01,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474360568] [2021-10-21 19:56:01,724 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:56:01,724 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:56:01,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:56:01,725 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:56:01,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-21 19:56:02,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:56:02,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:56:02,852 WARN L261 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 96 conjunts are in the unsatisfiable core [2021-10-21 19:56:02,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:56:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:56:09,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:09,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927785098] [2021-10-21 19:56:09,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:56:09,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474360568] [2021-10-21 19:56:09,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474360568] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:56:09,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:56:09,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-10-21 19:56:09,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124568843] [2021-10-21 19:56:09,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-21 19:56:09,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:09,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-21 19:56:09,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2021-10-21 19:56:09,517 INFO L87 Difference]: Start difference. First operand 186 states and 208 transitions. Second operand has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:16,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:56:16,804 INFO L93 Difference]: Finished difference Result 380 states and 424 transitions. [2021-10-21 19:56:16,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-21 19:56:16,805 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-21 19:56:16,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:56:16,807 INFO L225 Difference]: With dead ends: 380 [2021-10-21 19:56:16,807 INFO L226 Difference]: Without dead ends: 377 [2021-10-21 19:56:16,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 6686.8ms TimeCoverageRelationStatistics Valid=340, Invalid=1730, Unknown=0, NotChecked=0, Total=2070 [2021-10-21 19:56:16,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-10-21 19:56:16,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 146. [2021-10-21 19:56:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.1379310344827587) internal successors, (165), 145 states have internal predecessors, (165), 0 states have call successors, (0), 0 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 19:56:16,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 165 transitions. [2021-10-21 19:56:16,889 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 165 transitions. Word has length 55 [2021-10-21 19:56:16,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:56:16,890 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 165 transitions. [2021-10-21 19:56:16,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:16,890 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 165 transitions. [2021-10-21 19:56:16,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-21 19:56:16,890 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:56:16,891 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:16,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-21 19:56:17,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:56:17,091 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:56:17,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:17,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1170208386, now seen corresponding path program 2 times [2021-10-21 19:56:17,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:17,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884092377] [2021-10-21 19:56:17,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:17,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:17,104 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:56:17,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956809771] [2021-10-21 19:56:17,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:56:17,105 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:56:17,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:56:17,130 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:56:17,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-21 19:56:18,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:56:18,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:56:18,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-21 19:56:18,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:56:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:56:19,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:19,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884092377] [2021-10-21 19:56:19,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:56:19,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956809771] [2021-10-21 19:56:19,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956809771] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:56:19,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:56:19,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-21 19:56:19,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84993655] [2021-10-21 19:56:19,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:56:19,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:19,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:56:19,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:56:19,240 INFO L87 Difference]: Start difference. First operand 146 states and 165 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:19,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:56:19,972 INFO L93 Difference]: Finished difference Result 209 states and 232 transitions. [2021-10-21 19:56:19,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 19:56:19,972 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-10-21 19:56:19,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:56:19,973 INFO L225 Difference]: With dead ends: 209 [2021-10-21 19:56:19,974 INFO L226 Difference]: Without dead ends: 207 [2021-10-21 19:56:19,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 457.9ms TimeCoverageRelationStatistics Valid=196, Invalid=560, Unknown=0, NotChecked=0, Total=756 [2021-10-21 19:56:19,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-10-21 19:56:20,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 155. [2021-10-21 19:56:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.1363636363636365) internal successors, (175), 154 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 19:56:20,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 175 transitions. [2021-10-21 19:56:20,068 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 175 transitions. Word has length 56 [2021-10-21 19:56:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:56:20,068 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 175 transitions. [2021-10-21 19:56:20,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:20,069 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 175 transitions. [2021-10-21 19:56:20,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-21 19:56:20,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:56:20,070 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:20,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-21 19:56:20,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:56:20,289 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:56:20,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:20,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1127003380, now seen corresponding path program 3 times [2021-10-21 19:56:20,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:20,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862153492] [2021-10-21 19:56:20,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:20,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:20,303 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:56:20,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057857817] [2021-10-21 19:56:20,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:56:20,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:56:20,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:56:20,308 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:56:20,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-21 19:56:21,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-21 19:56:21,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:56:21,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 19:56:21,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:56:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-21 19:56:21,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:21,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862153492] [2021-10-21 19:56:21,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:56:21,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057857817] [2021-10-21 19:56:21,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057857817] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:56:21,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:56:21,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 19:56:21,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036106401] [2021-10-21 19:56:21,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:56:21,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:21,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:56:21,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:56:21,838 INFO L87 Difference]: Start difference. First operand 155 states and 175 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:22,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:56:22,066 INFO L93 Difference]: Finished difference Result 161 states and 181 transitions. [2021-10-21 19:56:22,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:56:22,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-10-21 19:56:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:56:22,066 INFO L225 Difference]: With dead ends: 161 [2021-10-21 19:56:22,067 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:56:22,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 71.0ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:56:22,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:56:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:56:22,067 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 19:56:22,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:56:22,068 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-10-21 19:56:22,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:56:22,068 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:56:22,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:22,068 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:56:22,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:56:22,070 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:22,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:22,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:22,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:22,071 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:56:22,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-21 19:56:22,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:56:22,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:56:22,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:56:24,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:56:27,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:56:30,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:56:33,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:56:35,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:56:35,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:56:35,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:56:35,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:57:10,863 WARN L207 SmtUtils]: Spent 32.91 s on a formula simplification. DAG size of input: 417 DAG size of output: 86 [2021-10-21 19:58:13,585 WARN L207 SmtUtils]: Spent 1.05 m on a formula simplification. DAG size of input: 638 DAG size of output: 69 [2021-10-21 19:59:18,424 WARN L207 SmtUtils]: Spent 1.08 m on a formula simplification. DAG size of input: 641 DAG size of output: 72 [2021-10-21 20:00:42,025 WARN L207 SmtUtils]: Spent 1.39 m on a formula simplification. DAG size of input: 713 DAG size of output: 95 [2021-10-21 20:01:23,381 WARN L207 SmtUtils]: Spent 41.35 s on a formula simplification. DAG size of input: 579 DAG size of output: 66 [2021-10-21 20:02:25,613 WARN L207 SmtUtils]: Spent 1.02 m on a formula simplification. DAG size of input: 606 DAG size of output: 76 [2021-10-21 20:02:25,616 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:02:25,616 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:02:25,617 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (let ((.cse0 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~a~0)) (.cse3 (= ULTIMATE.start_main_~p~0 1)) (.cse5 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse6 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (= ULTIMATE.start_main_~r~0 0)) (.cse9 (= ULTIMATE.start_main_~s~0 1)) (.cse11 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse12 (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0)) (.cse13 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse16 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse15 (<= 1 ULTIMATE.start_main_~y~0)) (.cse17 (= ULTIMATE.start_main_~d~0 1)) (.cse14 (<= 1 ULTIMATE.start_main_~x~0)) (.cse10 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and .cse0 (let ((.cse1 (= 0 (mod ULTIMATE.start_main_~d~0 (- 2)))) (.cse7 (= ULTIMATE.start_main_~v~0 (* 2 (* ULTIMATE.start_main_~b~0 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2))))))) (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse12 .cse13 .cse1 .cse2 .cse4 .cse7 .cse14 .cse10))) .cse15) (and .cse13 .cse2 (= ULTIMATE.start_main_~k~0 0) .cse4 .cse16 .cse15 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) (not (= ULTIMATE.start_main_~b~0 0)) .cse17 .cse14 .cse10) (and .cse0 (or (and .cse2 .cse3 .cse4 .cse16 (<= 1 ULTIMATE.start_main_~b~0) .cse5 .cse6 .cse8 .cse17 .cse9 .cse10 .cse11) (and .cse12 .cse13 .cse2 .cse4 .cse16 .cse15 .cse17 .cse14 .cse10))))) [2021-10-21 20:02:25,617 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:02:25,617 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse0 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~a~0)) (.cse11 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0)) (.cse9 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse10 (= ULTIMATE.start_main_~p~0 1)) (.cse12 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse13 (= ULTIMATE.start_main_~q~0 0)) (.cse14 (= ULTIMATE.start_main_~r~0 0)) (.cse15 (= ULTIMATE.start_main_~s~0 1)) (.cse16 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse1 (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0)) (.cse2 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (<= 1 ULTIMATE.start_main_~y~0)) (.cse7 (<= 1 ULTIMATE.start_main_~x~0)) (.cse8 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and .cse0 (let ((.cse6 (= ULTIMATE.start_main_~d~0 1))) (or (and .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0) .cse5 .cse6 .cse7 .cse8) (and .cse3 .cse9 .cse10 .cse4 .cse11 .cse5 .cse12 .cse13 .cse14 .cse6 .cse15 .cse8 .cse16)))) (and .cse0 .cse11 (or (and .cse3 .cse9 .cse10 .cse4 .cse5 .cse12 .cse13 (= ULTIMATE.start_main_~v~0 (* 2 (* ULTIMATE.start_main_~b~0 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2))))) .cse14 .cse15 .cse8 .cse16) (and .cse1 .cse2 (= 0 (mod ULTIMATE.start_main_~d~0 (- 2))) .cse3 .cse4 .cse5 .cse7 .cse8))))) [2021-10-21 20:02:25,617 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:02:25,620 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 10 16) the Hoare annotation is: (let ((.cse19 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)))) (let ((.cse9 (= ULTIMATE.start_main_~d~0 1)) (.cse0 (<= 1 ULTIMATE.start_main_~a~0)) (.cse3 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse5 (<= 1 ULTIMATE.start_main_~b~0)) (.cse6 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (= ULTIMATE.start_main_~r~0 0)) (.cse10 (= ULTIMATE.start_main_~s~0 1)) (.cse12 (= .cse19 ULTIMATE.start_main_~x~0)) (.cse13 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse14 (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0)) (.cse15 (= .cse19 ULTIMATE.start_main_~a~0)) (.cse16 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0)) (.cse17 (<= 1 ULTIMATE.start_main_~y~0)) (.cse18 (<= 1 ULTIMATE.start_main_~x~0)) (.cse11 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse14 .cse15 .cse16 .cse1 .cse2 .cse4 .cse17 .cse9 .cse18 .cse11) (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~v~0 (* 2 (* (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~b~0))) .cse4 .cse5 .cse6 .cse7 .cse8 .cse10 .cse11 .cse12 .cse13) (and .cse14 .cse15 .cse16 (= 0 (mod ULTIMATE.start_main_~d~0 (- 2))) .cse1 .cse2 .cse4 .cse17 .cse18 .cse11)))) [2021-10-21 20:02:25,620 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:02:25,621 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 53 54) the Hoare annotation is: (let ((.cse11 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)))) (let ((.cse0 (<= 1 ULTIMATE.start_main_~a~0)) (.cse3 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse5 (<= 1 ULTIMATE.start_main_~b~0)) (.cse6 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (= ULTIMATE.start_main_~r~0 0)) (.cse9 (= ULTIMATE.start_main_~s~0 1)) (.cse12 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse15 (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0)) (.cse13 (= .cse11 ULTIMATE.start_main_~a~0)) (.cse16 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0)) (.cse17 (<= 1 ULTIMATE.start_main_~y~0)) (.cse18 (<= 1 ULTIMATE.start_main_~x~0)) (.cse10 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~d~0 1) .cse9 .cse10 (= .cse11 ULTIMATE.start_main_~x~0) .cse12) (and .cse13 (let ((.cse14 (= 0 (mod ULTIMATE.start_main_~d~0 (- 2))))) (or (and .cse14 .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse12) (and .cse15 .cse16 .cse14 .cse1 .cse2 .cse4 .cse17 .cse18 .cse10)))) (and .cse15 .cse13 .cse16 .cse1 (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~b~0) .cse2 .cse4 .cse17 .cse18 .cse10)))) [2021-10-21 20:02:25,621 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:02:25,622 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:02:25,622 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:02:25,622 INFO L860 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: true [2021-10-21 20:02:25,622 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:02:25,622 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:02:25,624 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:02:25,625 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:02:25,625 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:02:25,625 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:02:25,625 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:02:25,625 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 57) the Hoare annotation is: (let ((.cse15 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse23 (= ULTIMATE.start_main_~q~0 1)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse3 (= ULTIMATE.start_main_~p~0 1)) (.cse7 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse8 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_main_~s~0 1)) (.cse11 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (.cse12 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse24 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)))) (let ((.cse20 (= .cse24 ULTIMATE.start_main_~x~0)) (.cse13 (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0)) (.cse0 (= .cse24 ULTIMATE.start_main_~a~0)) (.cse14 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse21 (= 0 (mod ULTIMATE.start_main_~d~0 (- 2)))) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse16 (<= 1 ULTIMATE.start_main_~y~0)) (.cse9 (= ULTIMATE.start_main_~d~0 1)) (.cse17 (<= 1 ULTIMATE.start_main_~x~0)) (.cse18 (or (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse1 (= ULTIMATE.start_main_~s~0 0) (= ULTIMATE.start_main_~p~0 0) .cse15 (= ULTIMATE.start_main_~r~0 1) .cse23 .cse11 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (and .cse1 .cse2 (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~b~0) .cse3 .cse7 .cse8 .cse10 .cse11 .cse12))) (.cse6 (<= 1 ULTIMATE.start_main_~b~0)) (.cse19 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse5 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0))) (or (and .cse0 (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse13 .cse14 .cse1 .cse4 .cse15 .cse16 .cse9 .cse17 .cse11))) (and .cse18 .cse5 .cse6 .cse19 .cse9 .cse20 .cse12) (and .cse21 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~r~0 0) .cse10 .cse20 .cse12) (and .cse13 .cse0 .cse14 .cse21 .cse1 .cse4 .cse5 .cse16 .cse17 .cse11) (and (let ((.cse22 (= ULTIMATE.start_main_~k~0 0))) (or (and .cse1 .cse22 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse15 .cse16 .cse19 (not (= ULTIMATE.start_main_~b~0 0)) .cse9 .cse17 .cse11 (< ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0)) (and .cse22 .cse18 .cse6 .cse19 .cse23))) .cse5)))) [2021-10-21 20:02:25,626 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 57) no Hoare annotation was computed. [2021-10-21 20:02:25,626 INFO L860 garLoopResultBuilder]: At program point L73(lines 18 74) the Hoare annotation is: true [2021-10-21 20:02:25,626 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:02:25,626 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:02:25,626 INFO L853 garLoopResultBuilder]: At program point L40-2(lines 40 60) the Hoare annotation is: (let ((.cse15 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse19 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)))) (let ((.cse0 (= .cse19 ULTIMATE.start_main_~a~0)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~a~0)) (.cse3 (= ULTIMATE.start_main_~p~0 1)) (.cse6 (<= 1 ULTIMATE.start_main_~b~0)) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (or (and .cse15 (<= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0)) (and .cse15 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) (.cse9 (= ULTIMATE.start_main_~r~0 0)) (.cse10 (= ULTIMATE.start_main_~s~0 1)) (.cse12 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse13 (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0)) (.cse14 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse5 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0)) (.cse20 (= ULTIMATE.start_main_~k~0 0)) (.cse16 (<= 1 ULTIMATE.start_main_~y~0)) (.cse18 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse17 (<= 1 ULTIMATE.start_main_~x~0)) (.cse11 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and .cse0 (let ((.cse1 (= 0 (mod ULTIMATE.start_main_~d~0 (- 2))))) (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse13 .cse14 .cse1 .cse15 .cse4 .cse5 .cse16 .cse17 .cse11)))) (and .cse3 .cse6 .cse7 .cse8 .cse18 .cse9 .cse10 .cse17 .cse11 (= .cse19 ULTIMATE.start_main_~x~0) .cse12) (and .cse15 .cse20 (= ULTIMATE.start_main_~s~0 0) (= ULTIMATE.start_main_~b~0 (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0))) (= ULTIMATE.start_main_~p~0 0) .cse18 (= ULTIMATE.start_main_~r~0 1) (= ULTIMATE.start_main_~q~0 1) .cse17 .cse11 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (and .cse0 .cse4 (let ((.cse21 (< ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0)) (.cse22 (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~b~0))) (or (and .cse2 .cse21 .cse22 .cse3 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse13 .cse14 .cse15 .cse21 .cse22 .cse17 .cse11))) .cse5 .cse16) (and .cse15 .cse20 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse16 .cse18 (not (= ULTIMATE.start_main_~b~0 0)) .cse17 .cse11)))) [2021-10-21 20:02:25,627 INFO L857 garLoopResultBuilder]: For program point L40-3(lines 40 60) no Hoare annotation was computed. [2021-10-21 20:02:25,627 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:02:25,627 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:02:25,627 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 42) no Hoare annotation was computed. [2021-10-21 20:02:25,627 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-21 20:02:25,627 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-10-21 20:02:25,627 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:02:25,627 INFO L853 garLoopResultBuilder]: At program point L33-2(lines 33 71) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~x~0)) (.cse2 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and .cse0 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) (<= 1 ULTIMATE.start_main_~p~0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse1 .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 (= ULTIMATE.start_main_~s~0 0) (= ULTIMATE.start_main_~b~0 (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0))) (= ULTIMATE.start_main_~p~0 0) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~r~0 1) (= ULTIMATE.start_main_~q~0 1) .cse1 .cse2 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (and (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) .cse1 .cse2))) [2021-10-21 20:02:25,627 INFO L857 garLoopResultBuilder]: For program point L33-3(lines 33 71) no Hoare annotation was computed. [2021-10-21 20:02:25,628 INFO L857 garLoopResultBuilder]: For program point L34(lines 34 35) no Hoare annotation was computed. [2021-10-21 20:02:25,628 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:02:25,631 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:02:25,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:02:25 BoogieIcfgContainer [2021-10-21 20:02:25,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:02:25,671 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:02:25,671 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:02:25,671 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:02:25,672 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:53:47" (3/4) ... [2021-10-21 20:02:25,675 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:02:25,685 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-21 20:02:25,686 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:02:25,686 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:02:25,686 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:02:25,733 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:02:25,733 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:02:25,734 INFO L168 Benchmark]: Toolchain (without parser) took 519137.13 ms. Allocated memory was 100.7 MB in the beginning and 685.8 MB in the end (delta: 585.1 MB). Free memory was 68.2 MB in the beginning and 418.8 MB in the end (delta: -350.7 MB). Peak memory consumption was 233.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:25,734 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 100.7 MB. Free memory is still 55.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:02:25,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.26 ms. Allocated memory is still 100.7 MB. Free memory was 68.0 MB in the beginning and 76.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:25,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.20 ms. Allocated memory is still 100.7 MB. Free memory was 76.3 MB in the beginning and 74.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:25,735 INFO L168 Benchmark]: Boogie Preprocessor took 24.81 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 73.5 MB in the end (delta: 971.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:25,735 INFO L168 Benchmark]: RCFGBuilder took 376.00 ms. Allocated memory is still 100.7 MB. Free memory was 73.1 MB in the beginning and 62.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:25,736 INFO L168 Benchmark]: TraceAbstraction took 518355.59 ms. Allocated memory was 100.7 MB in the beginning and 685.8 MB in the end (delta: 585.1 MB). Free memory was 61.8 MB in the beginning and 423.0 MB in the end (delta: -361.2 MB). Peak memory consumption was 555.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:25,736 INFO L168 Benchmark]: Witness Printer took 62.13 ms. Allocated memory is still 685.8 MB. Free memory was 423.0 MB in the beginning and 418.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:25,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 100.7 MB. Free memory is still 55.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.26 ms. Allocated memory is still 100.7 MB. Free memory was 68.0 MB in the beginning and 76.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.20 ms. Allocated memory is still 100.7 MB. Free memory was 76.3 MB in the beginning and 74.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.81 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 73.5 MB in the end (delta: 971.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 376.00 ms. Allocated memory is still 100.7 MB. Free memory was 73.1 MB in the beginning and 62.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 518355.59 ms. Allocated memory was 100.7 MB in the beginning and 685.8 MB in the end (delta: 585.1 MB). Free memory was 61.8 MB in the beginning and 423.0 MB in the end (delta: -361.2 MB). Peak memory consumption was 555.7 MB. Max. memory is 16.1 GB. * Witness Printer took 62.13 ms. Allocated memory is still 685.8 MB. Free memory was 423.0 MB in the beginning and 418.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 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: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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, 37 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 518239.4ms, OverallIterations: 35, TraceHistogramMax: 6, EmptinessCheckTime: 46.9ms, AutomataDifference: 94456.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 363344.0ms, InitialAbstractionConstructionTime: 14.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1107 SDtfs, 3997 SDslu, 4426 SDs, 0 SdLazy, 8774 SolverSat, 1012 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 35179.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1466 GetRequests, 928 SyntacticMatches, 0 SemanticMatches, 538 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2256 ImplicationChecksByTransitivity, 67314.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=305occurred in iteration=28, InterpolantAutomatonStates: 434, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2012.8ms AutomataMinimizationTime, 35 MinimizatonAttempts, 2993 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 91 NumberOfFragments, 1750 HoareAnnotationTreeSize, 9 FomulaSimplifications, 94940182671 FormulaSimplificationTreeSizeReduction, 15671.0ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 5532115107 FormulaSimplificationTreeSizeReductionInter, 347647.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 255.5ms SsaConstructionTime, 870.3ms SatisfiabilityAnalysisTime, 32614.7ms InterpolantComputationTime, 1213 NumberOfCodeBlocks, 1090 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 1178 ConstructedInterpolants, 2 QuantifiedInterpolants, 15758 SizeOfPredicates, 414 NumberOfNonLiveVariables, 4620 ConjunctsInSsa, 1121 ConjunctsInUnsatCore, 35 InterpolantComputations, 9 PerfectInterpolantSequences, 322/875 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 5 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((c + b * k == a && ((((((((((((0 == d % -2 && 1 <= a) && p == 1) && 1 == cond) && d * b == v) && 1 <= b) && q == 0) && ((cond == 1 && c <= x) || (cond == 1 && b <= x))) && r == 0) && s == 1) && a == r * y + p * x) && b == y) || ((((((((s * y + q * x == b && b < a) && 0 == d % -2) && cond == 1) && 1 == cond) && d * b == v) && 1 <= y) && 1 <= x) && a == r * y + p * x))) || ((((((((((p == 1 && 1 <= b) && q == 0) && ((cond == 1 && c <= x) || (cond == 1 && b <= x))) && c == a) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && c + b * k == x) && b == y)) || ((((((((((cond == 1 && k == 0) && s == 0) && b == x + a * s) && p == 0) && c == a) && r == 1) && q == 1) && 1 <= x) && a == r * y + p * x) && x < a)) || ((((c + b * k == a && 1 == cond) && (((((((((((1 <= a && c < b) && v <= b) && p == 1) && 1 <= b) && q == 0) && ((cond == 1 && c <= x) || (cond == 1 && b <= x))) && r == 0) && s == 1) && a == r * y + p * x) && b == y) || ((((((s * y + q * x == b && b < a) && cond == 1) && c < b) && v <= b) && 1 <= x) && a == r * y + p * x))) && d * b == v) && 1 <= y)) || ((((((((cond == 1 && k == 0) && b < c) && 1 <= cond) && 1 <= y) && c == a) && !(b == 0)) && 1 <= x) && a == r * y + p * x) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (c + b * k == a && (((((((((s * y + q * x == b && b < a) && cond == 1) && 1 == cond) && b == v) && 1 <= y) && d == 1) && 1 <= x) && a == r * y + p * x) || ((((((((((((cond == 1 && 1 <= cond) && p == 1) && 1 == cond) && d * b == v) && 1 <= y) && b <= x) && q == 0) && r == 0) && d == 1) && s == 1) && a == r * y + p * x) && b == y))) || ((c + b * k == a && d * b == v) && ((((((((((((cond == 1 && 1 <= cond) && p == 1) && 1 == cond) && 1 <= y) && b <= x) && q == 0) && v == 2 * (b * (d * -1 / -2))) && r == 0) && s == 1) && a == r * y + p * x) && b == y) || (((((((s * y + q * x == b && b < a) && 0 == d % -2) && cond == 1) && 1 == cond) && 1 <= y) && 1 <= x) && a == r * y + p * x))) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((1 <= a && cond == 1) && 1 == cond) && a <= x) && d * b == v) && 1 <= b) && b <= x) && q == 0) && r == 0) && d == 1) && s == 1) && a == r * y + p * x) && c + b * k == x) && b == y) || (((((((((s * y + q * x == b && c + b * k == a) && b < a) && cond == 1) && 1 == cond) && d * b == v) && 1 <= y) && d == 1) && 1 <= x) && a == r * y + p * x)) || (((((((((((((1 <= a && cond == 1) && 1 == cond) && a <= x) && v == 2 * (d * -1 / -2 * b)) && d * b == v) && 1 <= b) && b <= x) && q == 0) && r == 0) && s == 1) && a == r * y + p * x) && c + b * k == x) && b == y)) || (((((((((s * y + q * x == b && c + b * k == a) && b < a) && 0 == d % -2) && cond == 1) && 1 == cond) && d * b == v) && 1 <= y) && 1 <= x) && a == r * y + p * x) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((c + b * k == a && ((((((((((((cond == 1 && a == x) && p == 1) && 1 == cond) && d * b == v) && 1 <= b) && b <= x) && q == 0) && d == 1) && s == 1) && a == r * y + p * x) && b == y) || ((((((((s * y + q * x == b && b < a) && cond == 1) && 1 == cond) && b == v) && 1 <= y) && d == 1) && 1 <= x) && a == r * y + p * x))) || (((((((((((((((b == x && cond == 1) && s == 0) && p == 0) && b == v) && r == 1) && q == 1) && a == r * y + p * x) && x < a) || ((((((((cond == 1 && a == x) && v <= b) && p == 1) && b <= x) && q == 0) && s == 1) && a == r * y + p * x) && b == y)) && d * b == v) && 1 <= b) && c == a) && d == 1) && c + b * k == x) && b == y)) || ((((((((((((0 == d % -2 && cond == 1) && a == x) && p == 1) && 1 == cond) && d * b == v) && 1 <= b) && b <= x) && q == 0) && r == 0) && s == 1) && c + b * k == x) && b == y)) || (((((((((s * y + q * x == b && c + b * k == a) && b < a) && 0 == d % -2) && cond == 1) && 1 == cond) && d * b == v) && 1 <= y) && 1 <= x) && a == r * y + p * x)) || ((((((((((((cond == 1 && k == 0) && 1 <= cond) && b == v) && 1 <= y) && c == a) && !(b == 0)) && d == 1) && 1 <= x) && a == r * y + p * x) && v < c) || ((((k == 0 && (((((((((b == x && cond == 1) && s == 0) && p == 0) && b == v) && r == 1) && q == 1) && a == r * y + p * x) && x < a) || ((((((((cond == 1 && a == x) && v <= b) && p == 1) && b <= x) && q == 0) && s == 1) && a == r * y + p * x) && b == y))) && 1 <= b) && c == a) && q == 1)) && d * b == v) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((((((((((((((1 <= a && cond == 1) && 1 == cond) && a <= x) && d * b == v) && 1 <= b) && b <= x) && q == 0) && r == 0) && d == 1) && s == 1) && a == r * y + p * x) && c + b * k == x) && b == y) || (c + b * k == a && (((((((((((((0 == d % -2 && 1 <= a) && cond == 1) && 1 == cond) && a <= x) && d * b == v) && 1 <= b) && b <= x) && q == 0) && r == 0) && s == 1) && a == r * y + p * x) && b == y) || ((((((((s * y + q * x == b && b < a) && 0 == d % -2) && cond == 1) && 1 == cond) && d * b == v) && 1 <= y) && 1 <= x) && a == r * y + p * x)))) || (((((((((s * y + q * x == b && c + b * k == a) && b < a) && cond == 1) && v <= b) && 1 == cond) && d * b == v) && 1 <= y) && 1 <= x) && a == r * y + p * x) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && a <= x) && 1 <= b) && q == 0) && 1 <= p) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y) || (((((((((cond == 1 && s == 0) && b == x + a * s) && p == 0) && 1 <= c) && r == 1) && q == 1) && 1 <= x) && a == r * y + p * x) && x < a)) || (((((b < a && cond == 1) && 1 <= cond) && 1 <= y) && 1 <= x) && a == r * y + p * x) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((c + b * k == a && (((((((((((0 == d % -2 && cond == 1) && p == 1) && 1 == cond) && b <= x) && q == 0) && v == 2 * (b * (d * -1 / -2))) && r == 0) && s == 1) && a == r * y + p * x) && b == y) || (((((((s * y + q * x == b && b < a) && 0 == d % -2) && cond == 1) && 1 == cond) && v == 2 * (b * (d * -1 / -2))) && 1 <= x) && a == r * y + p * x))) && 1 <= y) || ((((((((((b < a && cond == 1) && k == 0) && 1 == cond) && b == v) && 1 <= y) && c == a) && !(b == 0)) && d == 1) && 1 <= x) && a == r * y + p * x)) || (c + b * k == a && ((((((((((((cond == 1 && p == 1) && 1 == cond) && b == v) && 1 <= b) && b <= x) && q == 0) && r == 0) && d == 1) && s == 1) && a == r * y + p * x) && b == y) || ((((((((s * y + q * x == b && b < a) && cond == 1) && 1 == cond) && b == v) && 1 <= y) && d == 1) && 1 <= x) && a == r * y + p * x))) RESULT: Ultimate proved your program to be correct! [2021-10-21 20:02:25,977 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-21 20:02:25,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d3b4e31-b14e-41f3-8812-ad406bafc096/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...