./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array20_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array20_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF --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 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:30:49,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:30:49,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:30:49,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:30:49,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:30:49,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:30:49,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:30:49,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:30:49,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:30:49,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:30:49,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:30:49,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:30:49,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:30:49,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:30:49,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:30:49,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:30:49,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:30:49,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:30:49,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:30:49,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:30:49,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:30:49,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:30:49,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:30:49,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:30:49,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:30:49,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:30:49,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:30:49,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:30:49,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:30:49,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:30:49,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:30:49,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:30:49,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:30:49,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:30:49,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:30:49,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:30:49,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:30:49,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:30:49,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:30:49,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:30:49,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:30:49,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:30:49,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:30:49,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:30:49,222 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:30:49,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:30:49,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:30:49,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:30:49,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:30:49,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:30:49,225 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:30:49,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:30:49,226 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:30:49,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:30:49,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:30:49,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:30:49,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:30:49,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:30:49,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:30:49,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:30:49,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:30:49,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:30:49,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:30:49,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:30:49,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:30:49,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:30:49,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:30:49,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:30:49,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:30:49,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:30:49,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:30:49,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:30:49,232 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:30:49,233 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:30:49,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:30:49,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:30:49,233 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_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 [2021-11-20 07:30:49,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:30:49,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:30:49,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:30:49,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:30:49,678 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:30:49,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/array-patterns/array20_pattern.c [2021-11-20 07:30:49,754 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/data/f6ea43d20/9dd41bdab9f847f5851447c79e176b1e/FLAG306ee2648 [2021-11-20 07:30:50,319 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:30:50,324 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/sv-benchmarks/c/array-patterns/array20_pattern.c [2021-11-20 07:30:50,340 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/data/f6ea43d20/9dd41bdab9f847f5851447c79e176b1e/FLAG306ee2648 [2021-11-20 07:30:50,622 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/data/f6ea43d20/9dd41bdab9f847f5851447c79e176b1e [2021-11-20 07:30:50,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:30:50,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:30:50,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:30:50,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:30:50,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:30:50,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:30:50" (1/1) ... [2021-11-20 07:30:50,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2759bd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:50, skipping insertion in model container [2021-11-20 07:30:50,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:30:50" (1/1) ... [2021-11-20 07:30:50,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:30:50,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:30:50,896 WARN L230 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_5f89ff41-1688-45ea-999a-ced9356de24f/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2021-11-20 07:30:50,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:30:50,935 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:30:50,949 WARN L230 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_5f89ff41-1688-45ea-999a-ced9356de24f/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2021-11-20 07:30:50,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:30:50,992 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:30:50,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:50 WrapperNode [2021-11-20 07:30:50,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:30:50,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:30:50,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:30:50,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:30:51,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:50" (1/1) ... [2021-11-20 07:30:51,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:50" (1/1) ... [2021-11-20 07:30:51,055 INFO L137 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2021-11-20 07:30:51,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:30:51,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:30:51,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:30:51,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:30:51,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:50" (1/1) ... [2021-11-20 07:30:51,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:50" (1/1) ... [2021-11-20 07:30:51,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:50" (1/1) ... [2021-11-20 07:30:51,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:50" (1/1) ... [2021-11-20 07:30:51,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:50" (1/1) ... [2021-11-20 07:30:51,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:50" (1/1) ... [2021-11-20 07:30:51,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:50" (1/1) ... [2021-11-20 07:30:51,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:30:51,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:30:51,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:30:51,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:30:51,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:50" (1/1) ... [2021-11-20 07:30:51,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:30:51,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:30:51,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:30:51,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:30:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:30:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:30:51,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:30:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:30:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:30:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:30:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:30:51,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:30:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:30:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:30:51,364 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:30:51,366 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:30:51,726 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:30:51,734 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:30:51,734 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-20 07:30:51,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:30:51 BoogieIcfgContainer [2021-11-20 07:30:51,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:30:51,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:30:51,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:30:51,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:30:51,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:30:50" (1/3) ... [2021-11-20 07:30:51,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c6c51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:30:51, skipping insertion in model container [2021-11-20 07:30:51,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:30:50" (2/3) ... [2021-11-20 07:30:51,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c6c51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:30:51, skipping insertion in model container [2021-11-20 07:30:51,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:30:51" (3/3) ... [2021-11-20 07:30:51,747 INFO L111 eAbstractionObserver]: Analyzing ICFG array20_pattern.c [2021-11-20 07:30:51,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:30:51,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:30:51,840 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:30:51,849 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:30:51,850 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:30:51,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:30:51,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 07:30:51,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:30:51,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:30:51,902 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:30:51,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:30:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2132324569, now seen corresponding path program 1 times [2021-11-20 07:30:51,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:30:51,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035697990] [2021-11-20 07:30:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:30:51,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:30:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:30:52,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:30:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:30:52,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:30:52,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:30:52,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035697990] [2021-11-20 07:30:52,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035697990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:30:52,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:30:52,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:30:52,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019264089] [2021-11-20 07:30:52,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:30:52,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:30:52,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:30:52,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:30:52,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:30:52,149 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:30:52,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:30:52,176 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2021-11-20 07:30:52,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:30:52,179 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-20 07:30:52,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:30:52,188 INFO L225 Difference]: With dead ends: 63 [2021-11-20 07:30:52,188 INFO L226 Difference]: Without dead ends: 29 [2021-11-20 07:30:52,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:30:52,197 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:30:52,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:30:52,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-20 07:30:52,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-20 07:30:52,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:30:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2021-11-20 07:30:52,244 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2021-11-20 07:30:52,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:30:52,244 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2021-11-20 07:30:52,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:30:52,245 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2021-11-20 07:30:52,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 07:30:52,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:30:52,248 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:30:52,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:30:52,251 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:30:52,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:30:52,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1872922357, now seen corresponding path program 1 times [2021-11-20 07:30:52,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:30:52,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675735438] [2021-11-20 07:30:52,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:30:52,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:30:52,295 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:30:52,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318509306] [2021-11-20 07:30:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:30:52,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:30:52,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:30:52,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:30:52,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:30:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:30:52,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:30:52,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:30:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:30:52,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:30:52,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:30:52,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675735438] [2021-11-20 07:30:52,664 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:30:52,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318509306] [2021-11-20 07:30:52,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318509306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:30:52,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:30:52,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:30:52,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056772319] [2021-11-20 07:30:52,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:30:52,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:30:52,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:30:52,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:30:52,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:30:52,670 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 07:30:52,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:30:52,726 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-11-20 07:30:52,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:30:52,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-11-20 07:30:52,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:30:52,735 INFO L225 Difference]: With dead ends: 36 [2021-11-20 07:30:52,737 INFO L226 Difference]: Without dead ends: 32 [2021-11-20 07:30:52,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:30:52,741 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:30:52,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:30:52,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-20 07:30:52,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-20 07:30:52,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:30:52,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-11-20 07:30:52,751 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 30 [2021-11-20 07:30:52,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:30:52,753 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-11-20 07:30:52,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 07:30:52,753 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-11-20 07:30:52,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-20 07:30:52,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:30:52,755 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:30:52,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:30:52,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:30:52,972 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:30:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:30:52,973 INFO L85 PathProgramCache]: Analyzing trace with hash 212512359, now seen corresponding path program 1 times [2021-11-20 07:30:52,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:30:52,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812822555] [2021-11-20 07:30:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:30:52,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:30:52,988 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:30:52,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843885633] [2021-11-20 07:30:52,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:30:52,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:30:52,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:30:52,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:30:53,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:30:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:30:53,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:30:53,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:30:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 07:30:53,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:30:53,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:30:53,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812822555] [2021-11-20 07:30:53,280 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:30:53,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843885633] [2021-11-20 07:30:53,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843885633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:30:53,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:30:53,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:30:53,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730870736] [2021-11-20 07:30:53,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:30:53,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:30:53,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:30:53,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:30:53,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:30:53,284 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 07:30:53,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:30:53,421 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2021-11-20 07:30:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:30:53,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2021-11-20 07:30:53,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:30:53,427 INFO L225 Difference]: With dead ends: 67 [2021-11-20 07:30:53,427 INFO L226 Difference]: Without dead ends: 42 [2021-11-20 07:30:53,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:30:53,432 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:30:53,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 80 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:30:53,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-20 07:30:53,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-11-20 07:30:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:30:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2021-11-20 07:30:53,449 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 35 [2021-11-20 07:30:53,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:30:53,450 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2021-11-20 07:30:53,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 07:30:53,450 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2021-11-20 07:30:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-20 07:30:53,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:30:53,452 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:30:53,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-20 07:30:53,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:30:53,653 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:30:53,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:30:53,654 INFO L85 PathProgramCache]: Analyzing trace with hash -654332553, now seen corresponding path program 1 times [2021-11-20 07:30:53,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:30:53,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691638879] [2021-11-20 07:30:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:30:53,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:30:53,677 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:30:53,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391617639] [2021-11-20 07:30:53,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:30:53,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:30:53,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:30:53,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:30:53,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:30:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:30:53,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:30:53,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:30:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:30:53,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:30:53,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:30:53,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691638879] [2021-11-20 07:30:53,969 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:30:53,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391617639] [2021-11-20 07:30:53,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391617639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:30:53,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:30:53,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:30:53,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508278558] [2021-11-20 07:30:53,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:30:53,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:30:53,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:30:53,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:30:53,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:30:53,973 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 07:30:54,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:30:54,072 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2021-11-20 07:30:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:30:54,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-11-20 07:30:54,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:30:54,075 INFO L225 Difference]: With dead ends: 64 [2021-11-20 07:30:54,076 INFO L226 Difference]: Without dead ends: 36 [2021-11-20 07:30:54,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:30:54,084 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 26 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:30:54,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 51 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:30:54,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-20 07:30:54,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2021-11-20 07:30:54,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:30:54,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2021-11-20 07:30:54,105 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 38 [2021-11-20 07:30:54,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:30:54,111 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2021-11-20 07:30:54,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 07:30:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2021-11-20 07:30:54,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 07:30:54,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:30:54,114 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:30:54,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:30:54,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:30:54,329 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:30:54,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:30:54,330 INFO L85 PathProgramCache]: Analyzing trace with hash 579061941, now seen corresponding path program 1 times [2021-11-20 07:30:54,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:30:54,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707796749] [2021-11-20 07:30:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:30:54,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:30:54,341 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:30:54,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594878977] [2021-11-20 07:30:54,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:30:54,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:30:54,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:30:54,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:30:54,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:30:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:30:54,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-20 07:30:54,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:30:55,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2021-11-20 07:30:55,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2021-11-20 07:30:55,235 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 07:30:55,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-20 07:30:55,799 INFO L354 Elim1Store]: treesize reduction 20, result has 13.0 percent of original size [2021-11-20 07:30:55,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 49 [2021-11-20 07:30:55,919 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:30:55,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:30:56,450 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:30:56,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 406 treesize of output 406 [2021-11-20 07:30:56,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 4 [2021-11-20 07:30:56,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 4 [2021-11-20 07:30:56,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 4 [2021-11-20 07:30:57,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 4 [2021-11-20 07:30:57,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 4 [2021-11-20 07:30:57,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 4 [2021-11-20 07:30:57,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 4 [2021-11-20 07:30:57,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 4 [2021-11-20 07:30:57,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 4 [2021-11-20 07:30:57,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 4 [2021-11-20 07:30:57,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 4 [2021-11-20 07:30:57,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 4 [2021-11-20 07:30:58,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 4 [2021-11-20 07:30:58,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 4 [2021-11-20 07:30:58,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 4 [2021-11-20 07:30:58,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 4 [2021-11-20 07:30:58,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 4 [2021-11-20 07:30:58,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 4 [2021-11-20 07:30:59,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 4 [2021-11-20 07:30:59,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 4 [2021-11-20 07:30:59,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 4 [2021-11-20 07:30:59,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 4 [2021-11-20 07:30:59,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 4 [2021-11-20 07:30:59,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 4 [2021-11-20 07:31:07,795 WARN L227 SmtUtils]: Spent 8.05s on a formula simplification. DAG size of input: 184 DAG size of output: 120 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 07:31:07,803 INFO L354 Elim1Store]: treesize reduction 1295, result has 25.1 percent of original size [2021-11-20 07:31:07,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 374 treesize of output 587 [2021-11-20 07:37:48,975 WARN L227 SmtUtils]: Spent 7.91s on a formula simplification. DAG size of input: 48 DAG size of output: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:38:01,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:01,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707796749] [2021-11-20 07:38:01,320 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:01,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594878977] [2021-11-20 07:38:01,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594878977] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:38:01,321 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:38:01,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-20 07:38:01,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159556218] [2021-11-20 07:38:01,321 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:01,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 07:38:01,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:01,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 07:38:01,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-11-20 07:38:01,322 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 07:38:02,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:02,630 INFO L93 Difference]: Finished difference Result 110 states and 142 transitions. [2021-11-20 07:38:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 07:38:02,632 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2021-11-20 07:38:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:02,635 INFO L225 Difference]: With dead ends: 110 [2021-11-20 07:38:02,635 INFO L226 Difference]: Without dead ends: 85 [2021-11-20 07:38:02,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=284, Invalid=1356, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 07:38:02,638 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 87 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:02,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 235 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 315 Invalid, 0 Unknown, 87 Unchecked, 0.3s Time] [2021-11-20 07:38:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-20 07:38:02,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 59. [2021-11-20 07:38:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 07:38:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2021-11-20 07:38:02,651 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 40 [2021-11-20 07:38:02,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:02,652 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2021-11-20 07:38:02,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 07:38:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2021-11-20 07:38:02,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 07:38:02,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:02,654 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:02,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:02,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:02,872 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:02,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:02,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1287607751, now seen corresponding path program 1 times [2021-11-20 07:38:02,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:02,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774564223] [2021-11-20 07:38:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:02,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:02,879 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:02,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991623147] [2021-11-20 07:38:02,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:02,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:02,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:02,891 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:02,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:38:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:02,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 07:38:02,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 07:38:03,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 07:38:03,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:03,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774564223] [2021-11-20 07:38:03,590 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:03,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991623147] [2021-11-20 07:38:03,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991623147] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:03,590 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:38:03,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2021-11-20 07:38:03,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278948256] [2021-11-20 07:38:03,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:03,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 07:38:03,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:03,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 07:38:03,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:38:03,593 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 07:38:04,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:04,035 INFO L93 Difference]: Finished difference Result 185 states and 225 transitions. [2021-11-20 07:38:04,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 07:38:04,039 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2021-11-20 07:38:04,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:04,040 INFO L225 Difference]: With dead ends: 185 [2021-11-20 07:38:04,040 INFO L226 Difference]: Without dead ends: 140 [2021-11-20 07:38:04,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2021-11-20 07:38:04,043 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 140 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:04,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 136 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:38:04,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-20 07:38:04,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 88. [2021-11-20 07:38:04,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 75 states have internal predecessors, (88), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 07:38:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 106 transitions. [2021-11-20 07:38:04,062 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 106 transitions. Word has length 40 [2021-11-20 07:38:04,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:04,062 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 106 transitions. [2021-11-20 07:38:04,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 07:38:04,063 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 106 transitions. [2021-11-20 07:38:04,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 07:38:04,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:04,065 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:04,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:04,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:04,288 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:04,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:04,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1706965193, now seen corresponding path program 2 times [2021-11-20 07:38:04,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:04,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639644748] [2021-11-20 07:38:04,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:04,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:04,297 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:04,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892739587] [2021-11-20 07:38:04,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:38:04,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:04,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:04,299 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:04,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 07:38:04,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:38:04,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:38:04,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:38:04,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:38:04,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:38:04,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:04,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639644748] [2021-11-20 07:38:04,630 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:04,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892739587] [2021-11-20 07:38:04,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892739587] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:04,630 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:38:04,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-20 07:38:04,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746729883] [2021-11-20 07:38:04,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:04,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:38:04,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:04,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:38:04,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:38:04,632 INFO L87 Difference]: Start difference. First operand 88 states and 106 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:38:04,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:04,866 INFO L93 Difference]: Finished difference Result 162 states and 193 transitions. [2021-11-20 07:38:04,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:38:04,867 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-11-20 07:38:04,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:04,868 INFO L225 Difference]: With dead ends: 162 [2021-11-20 07:38:04,868 INFO L226 Difference]: Without dead ends: 100 [2021-11-20 07:38:04,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:38:04,870 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 149 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:04,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 99 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:38:04,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-20 07:38:04,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 74. [2021-11-20 07:38:04,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 64 states have (on average 1.1875) internal successors, (76), 65 states have internal predecessors, (76), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 07:38:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2021-11-20 07:38:04,883 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 42 [2021-11-20 07:38:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:04,884 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2021-11-20 07:38:04,884 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:38:04,884 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2021-11-20 07:38:04,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 07:38:04,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:04,886 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:04,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-20 07:38:05,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 07:38:05,095 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:05,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:05,095 INFO L85 PathProgramCache]: Analyzing trace with hash 460196979, now seen corresponding path program 3 times [2021-11-20 07:38:05,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:05,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438079634] [2021-11-20 07:38:05,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:05,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:05,104 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:05,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693915068] [2021-11-20 07:38:05,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:38:05,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:05,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:05,112 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:05,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 07:38:05,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-20 07:38:05,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:38:05,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-20 07:38:05,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:05,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2021-11-20 07:38:05,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2021-11-20 07:38:05,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-20 07:38:05,635 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 07:38:06,050 INFO L354 Elim1Store]: treesize reduction 59, result has 35.2 percent of original size [2021-11-20 07:38:06,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 74 [2021-11-20 07:38:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 07:38:07,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:08,377 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:38:08,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 396 treesize of output 396 [2021-11-20 07:38:08,469 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-20 07:38:08,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 4 [2021-11-20 07:38:08,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 4 [2021-11-20 07:38:08,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 4 [2021-11-20 07:38:08,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 294 treesize of output 267 [2021-11-20 07:38:08,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 263 treesize of output 234 [2021-11-20 07:38:08,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 230 treesize of output 202 [2021-11-20 07:38:08,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 4 [2021-11-20 07:38:08,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 4 [2021-11-20 07:38:08,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 4 [2021-11-20 07:38:08,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 4 [2021-11-20 07:38:09,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 4 [2021-11-20 07:38:09,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 4 [2021-11-20 07:38:09,751 INFO L354 Elim1Store]: treesize reduction 362, result has 14.8 percent of original size [2021-11-20 07:38:09,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 186 treesize of output 138 [2021-11-20 07:38:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 07:38:14,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:14,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438079634] [2021-11-20 07:38:14,217 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:14,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693915068] [2021-11-20 07:38:14,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693915068] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:14,217 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:38:14,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 28 [2021-11-20 07:38:14,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336249151] [2021-11-20 07:38:14,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:14,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 07:38:14,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:14,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 07:38:14,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:38:14,220 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 26 states have internal predecessors, (59), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 07:38:18,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:18,570 INFO L93 Difference]: Finished difference Result 100 states and 121 transitions. [2021-11-20 07:38:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 07:38:18,571 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 26 states have internal predecessors, (59), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 42 [2021-11-20 07:38:18,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:18,573 INFO L225 Difference]: With dead ends: 100 [2021-11-20 07:38:18,573 INFO L226 Difference]: Without dead ends: 96 [2021-11-20 07:38:18,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=273, Invalid=1449, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 07:38:18,575 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 51 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:18,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 174 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 344 Invalid, 0 Unknown, 120 Unchecked, 1.5s Time] [2021-11-20 07:38:18,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-20 07:38:18,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 81. [2021-11-20 07:38:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 72 states have internal predecessors, (85), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 07:38:18,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2021-11-20 07:38:18,592 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 42 [2021-11-20 07:38:18,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:18,593 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2021-11-20 07:38:18,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 26 states have internal predecessors, (59), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 07:38:18,593 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2021-11-20 07:38:18,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 07:38:18,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:18,595 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:18,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:18,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:18,824 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:18,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:18,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1406472713, now seen corresponding path program 2 times [2021-11-20 07:38:18,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:18,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487152826] [2021-11-20 07:38:18,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:18,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:18,831 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:18,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835055202] [2021-11-20 07:38:18,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:38:18,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:18,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:18,832 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:18,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 07:38:18,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:38:18,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:38:18,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:38:18,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:38:19,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 07:38:19,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:19,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487152826] [2021-11-20 07:38:19,176 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:19,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835055202] [2021-11-20 07:38:19,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835055202] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:19,177 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:38:19,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-11-20 07:38:19,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387718492] [2021-11-20 07:38:19,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:19,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:38:19,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:19,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:38:19,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:38:19,182 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:38:19,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:19,430 INFO L93 Difference]: Finished difference Result 152 states and 187 transitions. [2021-11-20 07:38:19,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 07:38:19,431 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-11-20 07:38:19,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:19,432 INFO L225 Difference]: With dead ends: 152 [2021-11-20 07:38:19,432 INFO L226 Difference]: Without dead ends: 111 [2021-11-20 07:38:19,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:38:19,434 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:19,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 117 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:38:19,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-20 07:38:19,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2021-11-20 07:38:19,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 85 states have (on average 1.2117647058823529) internal successors, (103), 86 states have internal predecessors, (103), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 07:38:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 115 transitions. [2021-11-20 07:38:19,453 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 115 transitions. Word has length 42 [2021-11-20 07:38:19,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:19,453 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 115 transitions. [2021-11-20 07:38:19,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:38:19,454 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 115 transitions. [2021-11-20 07:38:19,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 07:38:19,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:19,456 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:19,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:19,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:19,684 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:19,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash 822903975, now seen corresponding path program 4 times [2021-11-20 07:38:19,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:19,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526274614] [2021-11-20 07:38:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:19,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:19,692 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:19,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413630096] [2021-11-20 07:38:19,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 07:38:19,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:19,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:19,704 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:19,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 07:38:19,742 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 07:38:19,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:38:19,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:38:19,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:19,881 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:38:19,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 07:38:20,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:20,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526274614] [2021-11-20 07:38:20,001 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:20,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413630096] [2021-11-20 07:38:20,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413630096] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:20,002 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:38:20,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-20 07:38:20,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142909220] [2021-11-20 07:38:20,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:20,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:38:20,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:20,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:38:20,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:38:20,004 INFO L87 Difference]: Start difference. First operand 95 states and 115 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:38:20,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:20,267 INFO L93 Difference]: Finished difference Result 114 states and 133 transitions. [2021-11-20 07:38:20,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 07:38:20,268 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2021-11-20 07:38:20,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:20,269 INFO L225 Difference]: With dead ends: 114 [2021-11-20 07:38:20,269 INFO L226 Difference]: Without dead ends: 75 [2021-11-20 07:38:20,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:38:20,271 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 56 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:20,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 122 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:38:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-20 07:38:20,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2021-11-20 07:38:20,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:38:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2021-11-20 07:38:20,287 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 45 [2021-11-20 07:38:20,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:20,287 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2021-11-20 07:38:20,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:38:20,287 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2021-11-20 07:38:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-20 07:38:20,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:20,295 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:20,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:20,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 07:38:20,524 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:20,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1727010197, now seen corresponding path program 3 times [2021-11-20 07:38:20,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:20,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027451879] [2021-11-20 07:38:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:20,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:20,531 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:20,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867108509] [2021-11-20 07:38:20,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:38:20,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:20,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:20,533 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:20,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 07:38:20,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-20 07:38:20,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:38:20,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 07:38:20,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-20 07:38:20,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-20 07:38:21,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:21,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027451879] [2021-11-20 07:38:21,229 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:21,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867108509] [2021-11-20 07:38:21,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867108509] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:21,230 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:38:21,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2021-11-20 07:38:21,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343752916] [2021-11-20 07:38:21,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:21,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 07:38:21,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:21,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 07:38:21,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:38:21,232 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 07:38:21,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:21,638 INFO L93 Difference]: Finished difference Result 127 states and 151 transitions. [2021-11-20 07:38:21,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:38:21,639 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2021-11-20 07:38:21,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:21,640 INFO L225 Difference]: With dead ends: 127 [2021-11-20 07:38:21,640 INFO L226 Difference]: Without dead ends: 123 [2021-11-20 07:38:21,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2021-11-20 07:38:21,642 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 148 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:21,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 115 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:38:21,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-20 07:38:21,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 64. [2021-11-20 07:38:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 58 states have (on average 1.206896551724138) internal successors, (70), 58 states have internal predecessors, (70), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:38:21,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2021-11-20 07:38:21,652 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 49 [2021-11-20 07:38:21,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:21,653 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2021-11-20 07:38:21,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 07:38:21,653 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2021-11-20 07:38:21,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-20 07:38:21,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:21,654 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:21,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:21,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:21,871 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:21,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:21,871 INFO L85 PathProgramCache]: Analyzing trace with hash 538416053, now seen corresponding path program 5 times [2021-11-20 07:38:21,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:21,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487264699] [2021-11-20 07:38:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:21,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:21,879 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:21,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79799429] [2021-11-20 07:38:21,883 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 07:38:21,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:21,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:21,885 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:21,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 07:38:21,958 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-11-20 07:38:21,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:38:21,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:38:21,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:38:22,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:22,225 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 07:38:22,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:22,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487264699] [2021-11-20 07:38:22,225 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:38:22,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79799429] [2021-11-20 07:38:22,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79799429] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:38:22,226 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:38:22,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-20 07:38:22,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94418534] [2021-11-20 07:38:22,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:22,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:38:22,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:22,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:38:22,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:38:22,229 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:38:22,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:22,423 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2021-11-20 07:38:22,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:38:22,424 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2021-11-20 07:38:22,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:22,424 INFO L225 Difference]: With dead ends: 71 [2021-11-20 07:38:22,424 INFO L226 Difference]: Without dead ends: 60 [2021-11-20 07:38:22,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:38:22,425 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 62 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:22,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 68 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:38:22,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-20 07:38:22,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2021-11-20 07:38:22,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:38:22,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2021-11-20 07:38:22,434 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 54 [2021-11-20 07:38:22,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:22,434 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2021-11-20 07:38:22,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:38:22,435 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2021-11-20 07:38:22,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-20 07:38:22,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:22,436 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:22,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-20 07:38:22,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 07:38:22,652 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:22,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:22,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1673343477, now seen corresponding path program 6 times [2021-11-20 07:38:22,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:22,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75552703] [2021-11-20 07:38:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:22,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:22,666 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:38:22,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474689317] [2021-11-20 07:38:22,666 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 07:38:22,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:22,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:22,667 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:22,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f89ff41-1688-45ea-999a-ced9356de24f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 07:38:23,013 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-11-20 07:38:23,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:38:23,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-20 07:38:23,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:23,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-20 07:38:23,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-20 07:38:23,272 INFO L354 Elim1Store]: treesize reduction 140, result has 20.0 percent of original size [2021-11-20 07:38:23,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 95 [2021-11-20 07:38:23,299 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-11-20 07:38:23,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 21 [2021-11-20 07:38:23,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:23,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 24 [2021-11-20 07:38:23,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:23,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:23,740 INFO L354 Elim1Store]: treesize reduction 116, result has 16.5 percent of original size [2021-11-20 07:38:23,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 108 [2021-11-20 07:38:23,780 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 07:38:23,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:23,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:23,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:23,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 28 [2021-11-20 07:38:24,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:24,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:24,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:24,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:24,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:24,065 INFO L354 Elim1Store]: treesize reduction 114, result has 16.8 percent of original size [2021-11-20 07:38:24,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 89 treesize of output 127 [2021-11-20 07:38:24,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:24,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:24,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:24,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:24,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:24,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:24,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 17 [2021-11-20 07:38:25,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:25,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:27,821 INFO L354 Elim1Store]: treesize reduction 592, result has 26.0 percent of original size [2021-11-20 07:38:27,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 4 select indices, 4 select index equivalence classes, 25 disjoint index pairs (out of 6 index pairs), introduced 12 new quantified variables, introduced 16 case distinctions, treesize of input 373 treesize of output 784 [2021-11-20 07:38:27,978 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 07:38:28,258 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 07:38:28,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:28,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:28,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:28,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:28,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:28,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:28,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:28,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:28,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:28,953 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:38:28,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 104 [2021-11-20 07:38:29,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 87 [2021-11-20 07:38:29,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 132 [2021-11-20 07:38:29,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 118 [2021-11-20 07:38:29,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 134 [2021-11-20 07:38:29,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:29,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 110 [2021-11-20 07:38:30,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:30,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:30,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:30,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:30,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:30,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:30,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:30,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:30,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:30,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:30,136 INFO L244 Elim1Store]: Index analysis took 124 ms [2021-11-20 07:38:30,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 23 [2021-11-20 07:38:31,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:31,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:35,132 INFO L354 Elim1Store]: treesize reduction 1573, result has 19.1 percent of original size [2021-11-20 07:38:35,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 323 treesize of output 633 [2021-11-20 07:38:35,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:35,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:35,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:35,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:35,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:35,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:35,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:35,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:35,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:35,812 INFO L354 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2021-11-20 07:38:35,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 69 [2021-11-20 07:38:36,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,143 INFO L244 Elim1Store]: Index analysis took 129 ms [2021-11-20 07:38:36,161 INFO L354 Elim1Store]: treesize reduction 67, result has 1.5 percent of original size [2021-11-20 07:38:36,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 150 treesize of output 72 [2021-11-20 07:38:36,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,473 INFO L244 Elim1Store]: Index analysis took 122 ms [2021-11-20 07:38:36,497 INFO L354 Elim1Store]: treesize reduction 101, result has 1.0 percent of original size [2021-11-20 07:38:36,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 258 treesize of output 129 [2021-11-20 07:38:36,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:38:36,823 INFO L354 Elim1Store]: treesize reduction 79, result has 44.4 percent of original size [2021-11-20 07:38:36,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 230 treesize of output 194