./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg --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 a93c350e5795e32421c3bef9d7525c3fd53f570f971d574def19132b3d6f08b8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:32:07,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:32:07,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:32:07,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:32:07,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:32:07,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:32:07,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:32:07,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:32:07,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:32:07,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:32:07,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:32:07,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:32:07,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:32:07,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:32:07,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:32:07,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:32:07,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:32:07,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:32:07,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:32:07,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:32:07,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:32:07,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:32:07,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:32:07,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:32:07,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:32:07,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:32:07,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:32:07,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:32:07,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:32:07,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:32:07,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:32:07,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:32:07,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:32:07,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:32:07,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:32:07,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:32:07,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:32:07,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:32:07,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:32:07,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:32:07,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:32:07,145 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:32:07,202 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:32:07,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:32:07,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:32:07,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:32:07,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:32:07,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:32:07,216 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:32:07,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:32:07,217 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:32:07,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:32:07,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:32:07,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:32:07,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:32:07,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:32:07,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:32:07,219 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:32:07,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:32:07,219 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:32:07,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:32:07,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:32:07,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:32:07,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:32:07,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:32:07,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:32:07,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:32:07,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:32:07,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:32:07,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:32:07,223 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:32:07,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:32:07,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:32:07,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:32:07,224 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_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a93c350e5795e32421c3bef9d7525c3fd53f570f971d574def19132b3d6f08b8 [2021-10-28 09:32:07,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:32:07,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:32:07,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:32:07,563 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:32:07,564 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:32:07,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2021-10-28 09:32:07,659 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/data/082aeadf1/dc7b81790e6c4b3e8ec864573f438786/FLAGab5440444 [2021-10-28 09:32:08,307 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:32:08,310 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2021-10-28 09:32:08,324 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/data/082aeadf1/dc7b81790e6c4b3e8ec864573f438786/FLAGab5440444 [2021-10-28 09:32:08,632 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/data/082aeadf1/dc7b81790e6c4b3e8ec864573f438786 [2021-10-28 09:32:08,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:32:08,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:32:08,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:32:08,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:32:08,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:32:08,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:32:08" (1/1) ... [2021-10-28 09:32:08,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ea92a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:08, skipping insertion in model container [2021-10-28 09:32:08,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:32:08" (1/1) ... [2021-10-28 09:32:08,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:32:08,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:32:08,918 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c[538,551] [2021-10-28 09:32:08,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:32:08,977 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:32:08,999 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c[538,551] [2021-10-28 09:32:09,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:32:09,045 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:32:09,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:09 WrapperNode [2021-10-28 09:32:09,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:32:09,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:32:09,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:32:09,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:32:09,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:09" (1/1) ... [2021-10-28 09:32:09,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:09" (1/1) ... [2021-10-28 09:32:09,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:32:09,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:32:09,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:32:09,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:32:09,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:09" (1/1) ... [2021-10-28 09:32:09,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:09" (1/1) ... [2021-10-28 09:32:09,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:09" (1/1) ... [2021-10-28 09:32:09,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:09" (1/1) ... [2021-10-28 09:32:09,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:09" (1/1) ... [2021-10-28 09:32:09,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:09" (1/1) ... [2021-10-28 09:32:09,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:09" (1/1) ... [2021-10-28 09:32:09,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:32:09,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:32:09,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:32:09,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:32:09,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:09" (1/1) ... [2021-10-28 09:32:09,199 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:32:09,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:09,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:32:09,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:32:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:32:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:32:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:32:09,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:32:09,606 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:32:09,607 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-28 09:32:09,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:32:09 BoogieIcfgContainer [2021-10-28 09:32:09,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:32:09,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:32:09,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:32:09,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:32:09,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:32:08" (1/3) ... [2021-10-28 09:32:09,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182d40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:32:09, skipping insertion in model container [2021-10-28 09:32:09,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:09" (2/3) ... [2021-10-28 09:32:09,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182d40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:32:09, skipping insertion in model container [2021-10-28 09:32:09,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:32:09" (3/3) ... [2021-10-28 09:32:09,620 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound5.c [2021-10-28 09:32:09,628 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:32:09,628 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-28 09:32:09,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:32:09,697 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:32:09,697 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-28 09:32:09,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 42 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:09,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:32:09,754 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:09,755 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:09,756 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:09,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:09,763 INFO L85 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-10-28 09:32:09,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:09,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721478933] [2021-10-28 09:32:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:09,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:10,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:10,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721478933] [2021-10-28 09:32:10,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721478933] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:10,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:10,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:32:10,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446494947] [2021-10-28 09:32:10,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:32:10,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:10,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:32:10,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:32:10,096 INFO L87 Difference]: Start difference. First operand has 43 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 42 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:10,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:10,130 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2021-10-28 09:32:10,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:32:10,132 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 09:32:10,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:10,147 INFO L225 Difference]: With dead ends: 83 [2021-10-28 09:32:10,147 INFO L226 Difference]: Without dead ends: 39 [2021-10-28 09:32:10,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:32:10,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-28 09:32:10,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-28 09:32:10,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.28125) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-28 09:32:10,261 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2021-10-28 09:32:10,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:10,262 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-28 09:32:10,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:10,263 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-28 09:32:10,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:32:10,264 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:10,264 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:10,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:32:10,269 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:10,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:10,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-28 09:32:10,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:10,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574292406] [2021-10-28 09:32:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:10,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:10,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:10,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574292406] [2021-10-28 09:32:10,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574292406] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:10,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:10,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:32:10,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890901202] [2021-10-28 09:32:10,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:32:10,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:10,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:32:10,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:32:10,418 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:10,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:10,533 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2021-10-28 09:32:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:32:10,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 09:32:10,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:10,535 INFO L225 Difference]: With dead ends: 58 [2021-10-28 09:32:10,536 INFO L226 Difference]: Without dead ends: 56 [2021-10-28 09:32:10,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:32:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-28 09:32:10,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2021-10-28 09:32:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-10-28 09:32:10,547 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2021-10-28 09:32:10,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:10,547 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-10-28 09:32:10,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:10,548 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-10-28 09:32:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:32:10,549 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:10,549 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:10,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:32:10,550 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:10,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:10,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2021-10-28 09:32:10,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:10,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125677192] [2021-10-28 09:32:10,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:10,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:10,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:10,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125677192] [2021-10-28 09:32:10,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125677192] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:10,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:10,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:32:10,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823394181] [2021-10-28 09:32:10,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:32:10,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:10,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:32:10,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:32:10,672 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:10,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:10,800 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-10-28 09:32:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:32:10,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-28 09:32:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:10,803 INFO L225 Difference]: With dead ends: 56 [2021-10-28 09:32:10,803 INFO L226 Difference]: Without dead ends: 54 [2021-10-28 09:32:10,804 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:32:10,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-28 09:32:10,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2021-10-28 09:32:10,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:10,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-10-28 09:32:10,828 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2021-10-28 09:32:10,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:10,829 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-10-28 09:32:10,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:10,829 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-10-28 09:32:10,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:32:10,830 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:10,831 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:10,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:32:10,832 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:10,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:10,833 INFO L85 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2021-10-28 09:32:10,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:10,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901851866] [2021-10-28 09:32:10,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:10,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:10,858 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:32:10,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464583502] [2021-10-28 09:32:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:10,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:10,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:10,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:10,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:32:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:10,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:32:10,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:11,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:11,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:11,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901851866] [2021-10-28 09:32:11,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:32:11,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464583502] [2021-10-28 09:32:11,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464583502] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:11,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:11,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:32:11,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073924559] [2021-10-28 09:32:11,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:32:11,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:11,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:32:11,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:32:11,208 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:11,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:11,368 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2021-10-28 09:32:11,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:32:11,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-28 09:32:11,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:11,371 INFO L225 Difference]: With dead ends: 76 [2021-10-28 09:32:11,371 INFO L226 Difference]: Without dead ends: 54 [2021-10-28 09:32:11,372 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:32:11,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-28 09:32:11,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2021-10-28 09:32:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-10-28 09:32:11,385 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 15 [2021-10-28 09:32:11,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:11,385 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-10-28 09:32:11,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:11,386 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-10-28 09:32:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:32:11,387 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:11,387 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:11,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:11,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:11,615 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:11,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:11,615 INFO L85 PathProgramCache]: Analyzing trace with hash 392223696, now seen corresponding path program 1 times [2021-10-28 09:32:11,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:11,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093123740] [2021-10-28 09:32:11,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:11,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:11,654 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:32:11,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192167807] [2021-10-28 09:32:11,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:11,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:11,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:11,658 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:11,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:32:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:11,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:32:11,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:12,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:12,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:12,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093123740] [2021-10-28 09:32:12,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:32:12,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192167807] [2021-10-28 09:32:12,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192167807] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:12,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:12,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:32:12,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133833536] [2021-10-28 09:32:12,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:32:12,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:12,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:32:12,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:32:12,353 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:12,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:12,607 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2021-10-28 09:32:12,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:32:12,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 09:32:12,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:12,610 INFO L225 Difference]: With dead ends: 53 [2021-10-28 09:32:12,610 INFO L226 Difference]: Without dead ends: 42 [2021-10-28 09:32:12,611 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:32:12,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-28 09:32:12,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-28 09:32:12,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:12,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2021-10-28 09:32:12,620 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 18 [2021-10-28 09:32:12,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:12,621 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2021-10-28 09:32:12,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:12,622 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2021-10-28 09:32:12,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:32:12,623 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:12,623 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:12,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:12,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:12,837 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:12,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:12,838 INFO L85 PathProgramCache]: Analyzing trace with hash 434992196, now seen corresponding path program 1 times [2021-10-28 09:32:12,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:12,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555669768] [2021-10-28 09:32:12,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:12,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:12,869 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:32:12,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634185046] [2021-10-28 09:32:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:12,887 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:12,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:12,899 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:12,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:32:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:13,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:32:13,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:13,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:13,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555669768] [2021-10-28 09:32:13,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:32:13,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634185046] [2021-10-28 09:32:13,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634185046] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:13,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:32:13,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:32:13,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939343119] [2021-10-28 09:32:13,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:32:13,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:13,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:32:13,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:32:13,422 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:13,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:13,842 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2021-10-28 09:32:13,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:32:13,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-28 09:32:13,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:13,844 INFO L225 Difference]: With dead ends: 91 [2021-10-28 09:32:13,845 INFO L226 Difference]: Without dead ends: 69 [2021-10-28 09:32:13,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:32:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-28 09:32:13,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2021-10-28 09:32:13,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 61 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:13,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-10-28 09:32:13,872 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 22 [2021-10-28 09:32:13,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:13,873 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-10-28 09:32:13,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:13,874 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-10-28 09:32:13,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 09:32:13,875 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:13,876 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:13,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:14,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 09:32:14,099 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:14,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:14,099 INFO L85 PathProgramCache]: Analyzing trace with hash 941114475, now seen corresponding path program 1 times [2021-10-28 09:32:14,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:14,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282173534] [2021-10-28 09:32:14,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:14,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:14,120 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:32:14,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356670839] [2021-10-28 09:32:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:14,121 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:14,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:14,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:14,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:32:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:14,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:32:14,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:14,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:14,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282173534] [2021-10-28 09:32:14,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:32:14,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356670839] [2021-10-28 09:32:14,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356670839] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:14,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:32:14,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:32:14,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690921364] [2021-10-28 09:32:14,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:32:14,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:14,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:32:14,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:32:14,970 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:15,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:15,455 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2021-10-28 09:32:15,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:32:15,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-28 09:32:15,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:15,457 INFO L225 Difference]: With dead ends: 73 [2021-10-28 09:32:15,457 INFO L226 Difference]: Without dead ends: 62 [2021-10-28 09:32:15,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:32:15,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-28 09:32:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-28 09:32:15,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-10-28 09:32:15,468 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 25 [2021-10-28 09:32:15,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:15,468 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-10-28 09:32:15,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:15,469 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-10-28 09:32:15,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 09:32:15,470 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:15,470 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:15,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:15,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:15,694 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:15,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:15,695 INFO L85 PathProgramCache]: Analyzing trace with hash -919005345, now seen corresponding path program 2 times [2021-10-28 09:32:15,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:15,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866463734] [2021-10-28 09:32:15,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:15,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:15,713 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:32:15,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496105289] [2021-10-28 09:32:15,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:32:15,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:15,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:15,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:15,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:32:15,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:32:15,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:32:15,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 09:32:15,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:16,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:16,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866463734] [2021-10-28 09:32:16,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:32:16,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496105289] [2021-10-28 09:32:16,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496105289] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:16,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:32:16,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:32:16,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138621899] [2021-10-28 09:32:16,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:32:16,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:16,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:32:16,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:32:16,622 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:17,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:17,434 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2021-10-28 09:32:17,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:32:17,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-28 09:32:17,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:17,436 INFO L225 Difference]: With dead ends: 113 [2021-10-28 09:32:17,436 INFO L226 Difference]: Without dead ends: 99 [2021-10-28 09:32:17,437 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:32:17,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-28 09:32:17,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2021-10-28 09:32:17,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 85 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:17,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2021-10-28 09:32:17,455 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 29 [2021-10-28 09:32:17,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:17,456 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2021-10-28 09:32:17,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:17,457 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2021-10-28 09:32:17,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:32:17,458 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:17,458 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:17,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:17,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 09:32:17,687 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:17,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:17,687 INFO L85 PathProgramCache]: Analyzing trace with hash -36466664, now seen corresponding path program 1 times [2021-10-28 09:32:17,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:17,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331254988] [2021-10-28 09:32:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:17,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:17,708 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:32:17,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62302583] [2021-10-28 09:32:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:17,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:17,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:17,711 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:17,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:32:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:17,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-28 09:32:17,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:18,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:18,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:18,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331254988] [2021-10-28 09:32:18,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:32:18,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62302583] [2021-10-28 09:32:18,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62302583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:18,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:32:18,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 09:32:18,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029376001] [2021-10-28 09:32:18,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:32:18,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:18,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:32:18,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:32:18,856 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:19,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:19,185 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2021-10-28 09:32:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:32:19,186 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-28 09:32:19,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:19,189 INFO L225 Difference]: With dead ends: 92 [2021-10-28 09:32:19,189 INFO L226 Difference]: Without dead ends: 90 [2021-10-28 09:32:19,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:32:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-28 09:32:19,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2021-10-28 09:32:19,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 85 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:19,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2021-10-28 09:32:19,205 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 31 [2021-10-28 09:32:19,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:19,207 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2021-10-28 09:32:19,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:19,207 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2021-10-28 09:32:19,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 09:32:19,217 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:19,242 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:19,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:19,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:19,470 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:19,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:19,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1961752720, now seen corresponding path program 2 times [2021-10-28 09:32:19,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:19,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903517005] [2021-10-28 09:32:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:19,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:19,498 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:32:19,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270702606] [2021-10-28 09:32:19,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:32:19,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:19,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:19,511 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:19,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:32:19,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:32:19,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:32:19,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:32:19,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-28 09:32:20,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:20,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903517005] [2021-10-28 09:32:20,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:32:20,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270702606] [2021-10-28 09:32:20,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270702606] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:20,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:20,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:32:20,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038225698] [2021-10-28 09:32:20,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:32:20,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:20,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:32:20,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:32:20,425 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:20,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:20,747 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2021-10-28 09:32:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:32:20,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-28 09:32:20,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:20,749 INFO L225 Difference]: With dead ends: 117 [2021-10-28 09:32:20,749 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 09:32:20,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:32:20,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 09:32:20,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2021-10-28 09:32:20,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.2) internal successors, (120), 104 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2021-10-28 09:32:20,768 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 32 [2021-10-28 09:32:20,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:20,768 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2021-10-28 09:32:20,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2021-10-28 09:32:20,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 09:32:20,770 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:20,770 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:20,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:20,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 09:32:20,988 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:20,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:20,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1455744328, now seen corresponding path program 1 times [2021-10-28 09:32:20,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:20,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753107157] [2021-10-28 09:32:20,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:20,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:21,012 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:32:21,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446584469] [2021-10-28 09:32:21,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:21,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:21,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:21,033 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:21,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 09:32:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:21,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:32:21,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:22,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:22,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753107157] [2021-10-28 09:32:22,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:32:22,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446584469] [2021-10-28 09:32:22,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446584469] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:22,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:32:22,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 09:32:22,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060806972] [2021-10-28 09:32:22,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:32:22,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:22,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:32:22,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:32:22,191 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:22,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:22,799 INFO L93 Difference]: Finished difference Result 161 states and 182 transitions. [2021-10-28 09:32:22,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:32:22,800 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-28 09:32:22,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:22,801 INFO L225 Difference]: With dead ends: 161 [2021-10-28 09:32:22,801 INFO L226 Difference]: Without dead ends: 104 [2021-10-28 09:32:22,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:32:22,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-28 09:32:22,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 88. [2021-10-28 09:32:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.216867469879518) internal successors, (101), 87 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2021-10-28 09:32:22,820 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 36 [2021-10-28 09:32:22,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:22,820 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2021-10-28 09:32:22,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2021-10-28 09:32:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 09:32:22,821 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:22,821 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:22,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:23,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:23,054 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:23,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:23,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1277177884, now seen corresponding path program 3 times [2021-10-28 09:32:23,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:23,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250038746] [2021-10-28 09:32:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:23,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:23,082 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:32:23,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791374329] [2021-10-28 09:32:23,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:32:23,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:23,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:23,085 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:23,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 09:32:23,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:32:23,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:32:23,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:32:23,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:26,336 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-28 09:32:26,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:26,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250038746] [2021-10-28 09:32:26,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:32:26,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791374329] [2021-10-28 09:32:26,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791374329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:26,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:32:26,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:32:26,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414147432] [2021-10-28 09:32:26,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:32:26,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:26,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:32:26,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2021-10-28 09:32:26,340 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:43,269 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2021-10-28 09:32:43,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:32:43,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-28 09:32:43,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:43,271 INFO L225 Difference]: With dead ends: 96 [2021-10-28 09:32:43,271 INFO L226 Difference]: Without dead ends: 86 [2021-10-28 09:32:43,272 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=21, Invalid=34, Unknown=1, NotChecked=0, Total=56 [2021-10-28 09:32:43,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-28 09:32:43,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-10-28 09:32:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 85 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2021-10-28 09:32:43,286 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 36 [2021-10-28 09:32:43,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:43,287 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2021-10-28 09:32:43,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2021-10-28 09:32:43,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 09:32:43,288 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:43,288 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:43,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:43,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:43,502 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:43,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:43,503 INFO L85 PathProgramCache]: Analyzing trace with hash -642892963, now seen corresponding path program 2 times [2021-10-28 09:32:43,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:43,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417322555] [2021-10-28 09:32:43,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:43,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:43,523 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:32:43,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151402234] [2021-10-28 09:32:43,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:32:43,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:43,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:43,532 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:43,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 09:32:43,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:32:43,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:32:43,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-28 09:32:43,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:45,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:45,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417322555] [2021-10-28 09:32:45,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:32:45,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151402234] [2021-10-28 09:32:45,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151402234] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:45,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:32:45,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-28 09:32:45,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772785771] [2021-10-28 09:32:45,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:32:45,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:45,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:32:45,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:32:45,305 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:46,449 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2021-10-28 09:32:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:32:46,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-28 09:32:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:46,451 INFO L225 Difference]: With dead ends: 112 [2021-10-28 09:32:46,451 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 09:32:46,452 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:32:46,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 09:32:46,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 97. [2021-10-28 09:32:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 93 states have (on average 1.2043010752688172) internal successors, (112), 96 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2021-10-28 09:32:46,469 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 38 [2021-10-28 09:32:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:46,469 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2021-10-28 09:32:46,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2021-10-28 09:32:46,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 09:32:46,471 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:46,471 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:46,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:46,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 09:32:46,686 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:46,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:46,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1707275894, now seen corresponding path program 3 times [2021-10-28 09:32:46,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:46,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988960656] [2021-10-28 09:32:46,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:46,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:46,703 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:32:46,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852861955] [2021-10-28 09:32:46,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:32:46,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:46,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:46,707 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:46,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 09:32:47,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 09:32:47,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:32:47,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-28 09:32:47,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:48,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:48,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988960656] [2021-10-28 09:32:48,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:32:48,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852861955] [2021-10-28 09:32:48,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852861955] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:48,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:32:48,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-28 09:32:48,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608293379] [2021-10-28 09:32:48,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:32:48,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:48,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:32:48,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:32:48,922 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:50,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:50,469 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions. [2021-10-28 09:32:50,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:32:50,470 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-28 09:32:50,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:50,472 INFO L225 Difference]: With dead ends: 134 [2021-10-28 09:32:50,472 INFO L226 Difference]: Without dead ends: 103 [2021-10-28 09:32:50,473 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2021-10-28 09:32:50,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-28 09:32:50,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 92. [2021-10-28 09:32:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 91 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2021-10-28 09:32:50,487 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 44 [2021-10-28 09:32:50,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:50,487 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2021-10-28 09:32:50,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:50,488 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2021-10-28 09:32:50,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 09:32:50,488 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:50,489 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:50,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:50,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 09:32:50,702 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:50,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:50,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1027491960, now seen corresponding path program 4 times [2021-10-28 09:32:50,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:50,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847873378] [2021-10-28 09:32:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:50,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:50,719 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:32:50,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692302474] [2021-10-28 09:32:50,720 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:32:50,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:50,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:50,721 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:50,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 09:32:51,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:32:51,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:32:51,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-28 09:32:51,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:52,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:52,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847873378] [2021-10-28 09:32:52,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:32:52,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692302474] [2021-10-28 09:32:52,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692302474] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:52,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:32:52,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-28 09:32:52,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137439230] [2021-10-28 09:32:52,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:32:52,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:52,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:32:52,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:32:52,800 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:53,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:53,763 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2021-10-28 09:32:53,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 09:32:53,764 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-28 09:32:53,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:53,765 INFO L225 Difference]: With dead ends: 131 [2021-10-28 09:32:53,765 INFO L226 Difference]: Without dead ends: 129 [2021-10-28 09:32:53,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:32:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-28 09:32:53,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2021-10-28 09:32:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 106 states have (on average 1.169811320754717) internal successors, (124), 109 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2021-10-28 09:32:53,782 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 45 [2021-10-28 09:32:53,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:53,783 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2021-10-28 09:32:53,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:53,783 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2021-10-28 09:32:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-28 09:32:53,784 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:53,784 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:53,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:53,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 09:32:53,990 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:53,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash -14469331, now seen corresponding path program 1 times [2021-10-28 09:32:53,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:53,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347659732] [2021-10-28 09:32:53,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:53,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:54,005 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:32:54,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728392221] [2021-10-28 09:32:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:54,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:54,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:54,010 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:54,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 09:32:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:54,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-28 09:32:54,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:56,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:56,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347659732] [2021-10-28 09:32:56,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:32:56,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728392221] [2021-10-28 09:32:56,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728392221] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:56,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:32:56,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-28 09:32:56,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927417800] [2021-10-28 09:32:56,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:32:56,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:56,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:32:56,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:32:56,228 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:57,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:57,346 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2021-10-28 09:32:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 09:32:57,347 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-28 09:32:57,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:57,348 INFO L225 Difference]: With dead ends: 136 [2021-10-28 09:32:57,348 INFO L226 Difference]: Without dead ends: 112 [2021-10-28 09:32:57,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2021-10-28 09:32:57,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-28 09:32:57,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2021-10-28 09:32:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 106 states have (on average 1.150943396226415) internal successors, (122), 109 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:57,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-10-28 09:32:57,365 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 46 [2021-10-28 09:32:57,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:57,366 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-10-28 09:32:57,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:57,366 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-10-28 09:32:57,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 09:32:57,367 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:57,367 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:57,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-10-28 09:32:57,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-28 09:32:57,590 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:32:57,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:57,591 INFO L85 PathProgramCache]: Analyzing trace with hash -422546789, now seen corresponding path program 2 times [2021-10-28 09:32:57,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:57,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329140] [2021-10-28 09:32:57,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:57,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:57,604 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:32:57,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889114902] [2021-10-28 09:32:57,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:32:57,605 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:57,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:57,606 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:57,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 09:32:58,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:32:58,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:32:58,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-28 09:32:58,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:59,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:59,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329140] [2021-10-28 09:32:59,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:32:59,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889114902] [2021-10-28 09:32:59,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889114902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:59,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:32:59,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-28 09:32:59,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135640224] [2021-10-28 09:32:59,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:32:59,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:32:59,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:32:59,893 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:33:01,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:33:01,315 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2021-10-28 09:33:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:33:01,316 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-28 09:33:01,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:33:01,317 INFO L225 Difference]: With dead ends: 131 [2021-10-28 09:33:01,317 INFO L226 Difference]: Without dead ends: 93 [2021-10-28 09:33:01,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-10-28 09:33:01,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-28 09:33:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2021-10-28 09:33:01,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 86 states have (on average 1.1046511627906976) internal successors, (95), 89 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:33:01,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2021-10-28 09:33:01,332 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 47 [2021-10-28 09:33:01,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:33:01,333 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2021-10-28 09:33:01,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:33:01,333 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2021-10-28 09:33:01,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-28 09:33:01,334 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:33:01,334 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:33:01,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:33:01,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:33:01,554 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:33:01,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:33:01,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1554139002, now seen corresponding path program 2 times [2021-10-28 09:33:01,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:33:01,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892917982] [2021-10-28 09:33:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:33:01,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:33:01,569 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:33:01,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660909446] [2021-10-28 09:33:01,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:33:01,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:33:01,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:33:01,584 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:33:01,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 09:33:02,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:33:02,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:33:02,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:33:02,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:33:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-28 09:33:25,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:33:25,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892917982] [2021-10-28 09:33:25,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:33:25,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660909446] [2021-10-28 09:33:25,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660909446] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:33:25,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:33:25,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:33:25,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681750413] [2021-10-28 09:33:25,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:33:25,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:33:25,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:33:25,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=40, Unknown=3, NotChecked=0, Total=56 [2021-10-28 09:33:25,119 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:33:42,094 WARN L207 SmtUtils]: Spent 16.94 s on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-10-28 09:33:58,671 WARN L207 SmtUtils]: Spent 16.55 s on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-10-28 09:34:15,607 WARN L207 SmtUtils]: Spent 16.63 s on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-10-28 09:34:31,719 WARN L207 SmtUtils]: Spent 16.05 s on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-10-28 09:34:52,274 WARN L207 SmtUtils]: Spent 20.41 s on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2021-10-28 09:35:27,567 WARN L207 SmtUtils]: Spent 14.45 s on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-10-28 09:35:44,168 WARN L207 SmtUtils]: Spent 16.53 s on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2021-10-28 09:35:58,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:35:58,333 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2021-10-28 09:35:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:35:58,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-28 09:35:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:35:58,334 INFO L225 Difference]: With dead ends: 94 [2021-10-28 09:35:58,334 INFO L226 Difference]: Without dead ends: 71 [2021-10-28 09:35:58,334 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 140.4s TimeCoverageRelationStatistics Valid=75, Invalid=155, Unknown=10, NotChecked=0, Total=240 [2021-10-28 09:35:58,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-28 09:35:58,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2021-10-28 09:35:58,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 62 states have (on average 1.064516129032258) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:35:58,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-10-28 09:35:58,342 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 49 [2021-10-28 09:35:58,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:35:58,342 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-10-28 09:35:58,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:35:58,342 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-10-28 09:35:58,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 09:35:58,343 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:35:58,343 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:35:58,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-10-28 09:35:58,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 09:35:58,546 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:35:58,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:35:58,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1461163621, now seen corresponding path program 5 times [2021-10-28 09:35:58,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:35:58,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796852884] [2021-10-28 09:35:58,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:35:58,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:35:58,558 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:35:58,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646187494] [2021-10-28 09:35:58,558 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:35:58,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:35:58,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:35:58,562 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:35:58,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 09:35:59,186 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-28 09:35:59,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:35:59,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 09:35:59,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:36:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:36:01,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:36:01,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796852884] [2021-10-28 09:36:01,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:36:01,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646187494] [2021-10-28 09:36:01,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646187494] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:36:01,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:36:01,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-28 09:36:01,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342271777] [2021-10-28 09:36:01,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:36:01,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:36:01,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:36:01,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:36:01,041 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:36:04,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:36:04,563 INFO L93 Difference]: Finished difference Result 97 states and 100 transitions. [2021-10-28 09:36:04,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:36:04,564 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-28 09:36:04,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:36:04,565 INFO L225 Difference]: With dead ends: 97 [2021-10-28 09:36:04,565 INFO L226 Difference]: Without dead ends: 79 [2021-10-28 09:36:04,566 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2021-10-28 09:36:04,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-28 09:36:04,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2021-10-28 09:36:04,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 65 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:36:04,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-10-28 09:36:04,576 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 51 [2021-10-28 09:36:04,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:36:04,577 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-10-28 09:36:04,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:36:04,577 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-10-28 09:36:04,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 09:36:04,578 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:36:04,578 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:36:04,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:36:04,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:36:04,798 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:36:04,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:36:04,799 INFO L85 PathProgramCache]: Analyzing trace with hash -218649978, now seen corresponding path program 1 times [2021-10-28 09:36:04,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:36:04,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301147921] [2021-10-28 09:36:04,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:36:04,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:36:04,808 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:36:04,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386992104] [2021-10-28 09:36:04,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:36:04,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:36:04,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:36:04,810 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:36:04,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 09:36:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:36:05,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-28 09:36:05,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:36:06,994 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:36:06,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:36:06,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301147921] [2021-10-28 09:36:06,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:36:06,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386992104] [2021-10-28 09:36:06,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386992104] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:36:06,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:36:06,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-28 09:36:06,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118340893] [2021-10-28 09:36:06,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:36:06,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:36:06,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:36:06,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:36:06,996 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:36:07,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:36:07,964 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2021-10-28 09:36:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 09:36:07,966 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-28 09:36:07,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:36:07,966 INFO L225 Difference]: With dead ends: 85 [2021-10-28 09:36:07,966 INFO L226 Difference]: Without dead ends: 58 [2021-10-28 09:36:07,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2021-10-28 09:36:07,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-28 09:36:07,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-28 09:36:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0) internal successors, (57), 57 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:36:07,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 57 transitions. [2021-10-28 09:36:07,982 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 57 transitions. Word has length 53 [2021-10-28 09:36:07,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:36:07,982 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 57 transitions. [2021-10-28 09:36:07,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:36:07,983 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 57 transitions. [2021-10-28 09:36:07,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-28 09:36:07,983 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:36:07,984 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:36:08,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:36:08,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:36:08,202 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:36:08,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:36:08,203 INFO L85 PathProgramCache]: Analyzing trace with hash 196796624, now seen corresponding path program 1 times [2021-10-28 09:36:08,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:36:08,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308372208] [2021-10-28 09:36:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:36:08,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:36:08,223 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:36:08,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045260291] [2021-10-28 09:36:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:36:08,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:36:08,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:36:08,225 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:36:08,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 09:36:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:36:08,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-28 09:36:08,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:36:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:36:10,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:36:10,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308372208] [2021-10-28 09:36:10,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:36:10,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045260291] [2021-10-28 09:36:10,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045260291] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:36:10,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:36:10,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-28 09:36:10,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204735778] [2021-10-28 09:36:10,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:36:10,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:36:10,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:36:10,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:36:10,637 INFO L87 Difference]: Start difference. First operand 58 states and 57 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:36:11,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:36:11,327 INFO L93 Difference]: Finished difference Result 58 states and 57 transitions. [2021-10-28 09:36:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:36:11,327 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-28 09:36:11,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:36:11,328 INFO L225 Difference]: With dead ends: 58 [2021-10-28 09:36:11,328 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:36:11,329 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2021-10-28 09:36:11,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:36:11,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:36:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:36:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:36:11,330 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2021-10-28 09:36:11,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:36:11,330 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:36:11,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:36:11,330 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:36:11,331 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:36:11,333 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:36:11,334 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:36:11,334 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:36:11,334 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:36:11,335 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:36:11,335 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:36:11,335 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:36:11,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:36:11,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-28 09:36:11,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 09:36:11,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:36:11,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:36:11,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:36:11,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:36:11,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:36:11,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:36:11,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:36:11,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:36:11,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:36:30,827 WARN L207 SmtUtils]: Spent 15.26 s on a formula simplification. DAG size of input: 195 DAG size of output: 84 [2021-10-28 09:36:34,180 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:36:34,180 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-28 09:36:34,180 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2021-10-28 09:36:34,180 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2021-10-28 09:36:34,181 INFO L853 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse7 (mod ULTIMATE.start_main_~B~0 4294967296)) (.cse8 (mod ULTIMATE.start_main_~A~0 4294967296))) (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 .cse7)) .cse8)) (.cse3 (<= 1 .cse7)) (.cse4 (= ULTIMATE.start_main_~r~0 .cse8)) (.cse5 (= (* .cse7 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~d~0)) (.cse6 (< (div (+ (* ULTIMATE.start_main_~r~0 (- 1)) 5) (- 4294967296)) 1))) (or (and (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~p~0 2)) (and .cse0 (<= .cse7 5) .cse3 (= ULTIMATE.start_main_~d~0 .cse7) (= ULTIMATE.start_main_~q~0 0) .cse4 .cse5 .cse6) (and .cse0 (<= (* 2 .cse7) ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~p~0 4) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 (<= (* 4 .cse7) ULTIMATE.start_main_~r~0) .cse4 (= ULTIMATE.start_main_~d~0 (* 8 .cse7)) .cse5 .cse6)))) [2021-10-28 09:36:34,181 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:36:34,181 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 09:36:34,181 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 09:36:34,181 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-28 09:36:34,181 INFO L857 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-10-28 09:36:34,181 INFO L857 garLoopResultBuilder]: For program point L12-4(line 12) no Hoare annotation was computed. [2021-10-28 09:36:34,181 INFO L860 garLoopResultBuilder]: At program point L62(lines 22 63) the Hoare annotation is: true [2021-10-28 09:36:34,182 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:36:34,182 INFO L857 garLoopResultBuilder]: For program point L54(lines 54 57) no Hoare annotation was computed. [2021-10-28 09:36:34,182 INFO L857 garLoopResultBuilder]: For program point L54-2(lines 22 63) no Hoare annotation was computed. [2021-10-28 09:36:34,182 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2021-10-28 09:36:34,182 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:36:34,182 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:36:34,183 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:36:34,183 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse7 (mod ULTIMATE.start_main_~B~0 4294967296))) (let ((.cse2 (* 2 .cse7)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 .cse7)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~r~0 (mod ULTIMATE.start_main_~A~0 4294967296))) (.cse6 (< (div (+ (* ULTIMATE.start_main_~r~0 (- 1)) 5) (- 4294967296)) 1))) (or (and (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0) .cse0 .cse1 (= .cse2 ULTIMATE.start_main_~d~0) .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~p~0 2)) (and .cse0 (<= .cse2 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~p~0 4) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 (= (* 2 (* (div ULTIMATE.start_main_~p~0 2) .cse7)) ULTIMATE.start_main_~d~0) .cse4 .cse5 .cse6) (and .cse0 .cse1 (<= .cse7 5) .cse3 (= ULTIMATE.start_main_~d~0 .cse7) .cse4 .cse5 (= (* .cse7 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~d~0) .cse6) (and .cse0 .cse1 .cse3 (<= (* 4 .cse7) ULTIMATE.start_main_~r~0) .cse4 (= ULTIMATE.start_main_~p~0 8) .cse5 (= ULTIMATE.start_main_~d~0 (* 8 .cse7)) .cse6)))) [2021-10-28 09:36:34,183 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:36:34,183 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse7 (mod ULTIMATE.start_main_~B~0 4294967296))) (let ((.cse2 (* 2 .cse7)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 .cse7)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~r~0 (mod ULTIMATE.start_main_~A~0 4294967296))) (.cse6 (< (div (+ (* ULTIMATE.start_main_~r~0 (- 1)) 5) (- 4294967296)) 1))) (or (and (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0) .cse0 .cse1 (= .cse2 ULTIMATE.start_main_~d~0) .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~p~0 2)) (and .cse0 (<= .cse2 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~p~0 4) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 (= (* 2 (* (div ULTIMATE.start_main_~p~0 2) .cse7)) ULTIMATE.start_main_~d~0) .cse4 .cse5 .cse6) (and .cse0 .cse1 (<= .cse7 5) .cse3 (= ULTIMATE.start_main_~d~0 .cse7) .cse4 .cse5 (= (* .cse7 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~d~0) .cse6) (and .cse0 .cse1 .cse3 (<= (* 4 .cse7) ULTIMATE.start_main_~r~0) .cse4 (= ULTIMATE.start_main_~p~0 8) .cse5 (= ULTIMATE.start_main_~d~0 (* 8 .cse7)) .cse6)))) [2021-10-28 09:36:34,184 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:36:34,184 INFO L853 garLoopResultBuilder]: At program point L15-8(line 40) the Hoare annotation is: (let ((.cse1 (mod ULTIMATE.start_main_~B~0 4294967296))) (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 .cse1)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~r~0 (mod ULTIMATE.start_main_~A~0 4294967296))) (.cse6 (= (* .cse1 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~d~0)) (.cse7 (< (div (+ (* ULTIMATE.start_main_~r~0 (- 1)) 5) (- 4294967296)) 1))) (or (and .cse0 (<= .cse1 5) .cse2 .cse3 (= ULTIMATE.start_main_~d~0 .cse1) .cse4 .cse5 .cse6 .cse7) (and .cse0 .cse2 .cse3 (<= (* 4 .cse1) ULTIMATE.start_main_~r~0) .cse4 .cse5 (= ULTIMATE.start_main_~d~0 (* 8 .cse1)) .cse6 .cse7) (and .cse0 (<= (* 2 .cse1) ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~p~0 4) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0) .cse0 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~p~0 2))))) [2021-10-28 09:36:34,184 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:36:34,184 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse3 (mod ULTIMATE.start_main_~B~0 4294967296))) (let ((.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse26 (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse24 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) (.cse1 (* 2 .cse3)) (.cse19 (* ULTIMATE.start_main_~r~0 (- 1))) (.cse16 (mod ULTIMATE.start_main_~A~0 4294967296))) (let ((.cse11 (= (div (+ .cse19 .cse16) 2) ULTIMATE.start_main_~d~0)) (.cse18 (<= .cse1 .cse16)) (.cse10 (* 4 .cse3)) (.cse20 (= .cse24 .cse16)) (.cse8 (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 .cse3)) .cse16)) (.cse21 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (.cse9 (<= 0 ULTIMATE.start_main_~r~0)) (.cse7 (<= .cse16 5)) (.cse22 (not .cse26)) (.cse23 (or .cse26 .cse2)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0)) (.cse25 (= (* .cse3 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~d~0)) (.cse12 (= ULTIMATE.start_main_~p~0 2)) (.cse17 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse13 (<= .cse3 5)) (.cse14 (= ULTIMATE.start_main_~p~0 1)) (.cse15 (= ULTIMATE.start_main_~d~0 .cse3)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~r~0 .cse16))) (or (and .cse0 (<= .cse1 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~p~0 4) .cse2 (= (* 2 (* (div ULTIMATE.start_main_~p~0 2) .cse3)) ULTIMATE.start_main_~d~0) .cse4 .cse5 .cse6 .cse7) (and (= ULTIMATE.start_main_~q~0 4) .cse0 .cse2 .cse8 .cse9 (< 0 .cse10) .cse7 .cse11 .cse12) (and (<= (mod ULTIMATE.start_main_~r~0 4294967296) 5) .cse0 .cse13 .cse14 .cse2 (< ULTIMATE.start_main_~r~0 4294967296) .cse8 (<= 1 .cse3) .cse9 .cse15 .cse7) (and .cse0 (= (+ .cse1 ULTIMATE.start_main_~r~0) .cse16) .cse17 (= ULTIMATE.start_main_~q~0 2) (< .cse16 .cse10) .cse14 .cse18 .cse7 .cse11) (and .cse0 .cse17 .cse13 (< (div (+ (- 1) .cse19) (- 2)) (+ .cse3 1)) .cse14 .cse15 .cse4 .cse5) (and .cse0 .cse17 .cse13 .cse20 .cse21 .cse9 .cse15 (= ULTIMATE.start_main_~q~0 1) .cse6) (and .cse0 (<= .cse10 ULTIMATE.start_main_~r~0) .cse4 (= ULTIMATE.start_main_~p~0 8) .cse5 (= ULTIMATE.start_main_~d~0 (* 8 .cse3)) .cse6 .cse22 .cse23 (< (div (+ .cse19 5) (- 4294967296)) 1)) (and .cse0 .cse2 .cse8 .cse21 .cse18 (< .cse24 .cse10) .cse7 .cse25 .cse12) (and .cse0 .cse20 .cse8 .cse21 .cse9 (= (mod ULTIMATE.start_main_~d~0 4) 0) .cse6 .cse7 .cse22 .cse23) (and (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0) .cse0 .cse13 .cse2 .cse4 .cse5 .cse6 .cse25 .cse12) (and .cse17 .cse13 .cse14 .cse15 .cse4 .cse5 (< ULTIMATE.start_main_~r~0 .cse3)))))) [2021-10-28 09:36:34,185 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:36:34,185 INFO L853 garLoopResultBuilder]: At program point L15-14(line 50) the Hoare annotation is: (let ((.cse19 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse24 (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse10 (mod ULTIMATE.start_main_~A~0 4294967296)) (.cse4 (mod ULTIMATE.start_main_~B~0 4294967296))) (let ((.cse3 (* ULTIMATE.start_main_~r~0 (- 1))) (.cse18 (* 2 .cse4)) (.cse9 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) (.cse14 (* 4 .cse4)) (.cse23 (<= 1 .cse4)) (.cse22 (= ULTIMATE.start_main_~p~0 2)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= .cse4 5)) (.cse5 (= ULTIMATE.start_main_~p~0 1)) (.cse6 (= ULTIMATE.start_main_~d~0 .cse4)) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (= ULTIMATE.start_main_~r~0 .cse10)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse21 (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 .cse4)) .cse10)) (.cse11 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (.cse12 (<= 0 ULTIMATE.start_main_~r~0)) (.cse13 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0)) (.cse20 (<= .cse10 5)) (.cse15 (not .cse24)) (.cse16 (or .cse24 .cse19)) (.cse17 (= (* .cse4 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~d~0))) (or (and .cse0 .cse1 .cse2 (< (div (+ (- 1) .cse3) (- 2)) (+ .cse4 1)) .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse1 .cse2 (= .cse9 .cse10) .cse11 .cse12 .cse6 (= ULTIMATE.start_main_~q~0 1) .cse13) (and .cse0 (<= .cse14 ULTIMATE.start_main_~r~0) .cse7 .cse8 (= ULTIMATE.start_main_~d~0 (* 8 .cse4)) .cse13 .cse15 .cse16 .cse17 (< (div (+ .cse3 5) (- 4294967296)) 1)) (and .cse0 (<= .cse18 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~p~0 4) .cse19 .cse7 .cse8 .cse13 .cse20 .cse17) (and .cse0 .cse19 .cse21 .cse11 (<= .cse18 .cse10) (< .cse9 .cse14) .cse20 .cse17 .cse22) (and (<= (mod ULTIMATE.start_main_~r~0 4294967296) 5) .cse0 .cse2 .cse19 (< ULTIMATE.start_main_~r~0 4294967296) .cse21 .cse23 .cse12 .cse6 .cse20 .cse17) (and (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0) .cse0 .cse2 .cse19 .cse7 .cse8 .cse13 .cse17 .cse22) (and (= ULTIMATE.start_main_~q~0 4) .cse0 .cse2 .cse19 .cse21 .cse23 .cse12 .cse20 .cse17 .cse22) (and .cse1 .cse2 .cse5 .cse6 .cse7 .cse8 (< ULTIMATE.start_main_~r~0 .cse4)) (and .cse0 .cse21 .cse11 .cse12 (= (mod ULTIMATE.start_main_~d~0 4) 0) .cse13 .cse20 .cse15 .cse16 .cse17)))) [2021-10-28 09:36:34,185 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:36:34,185 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 09:36:34,185 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~B~0 4294967296))) (let ((.cse1 (= ULTIMATE.start_main_~d~0 .cse0)) (.cse2 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= .cse0 5) (<= 1 .cse0) .cse1 .cse2) (and (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2)))) [2021-10-28 09:36:34,186 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:36:34,186 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-10-28 09:36:34,186 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:36:34,186 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:36:34,186 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:36:34,186 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:36:34,187 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:36:34,187 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:36:34,187 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:36:34,187 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:36:34,187 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 09:36:34,187 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:36:34,190 INFO L731 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:36:34,192 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:36:34,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:36:34 BoogieIcfgContainer [2021-10-28 09:36:34,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:36:34,235 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:36:34,236 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:36:34,236 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:36:34,236 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:32:09" (3/4) ... [2021-10-28 09:36:34,239 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:36:34,250 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-28 09:36:34,251 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:36:34,251 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:36:34,251 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:36:34,295 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:36:34,295 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:36:34,296 INFO L168 Benchmark]: Toolchain (without parser) took 265654.32 ms. Allocated memory was 111.1 MB in the beginning and 176.2 MB in the end (delta: 65.0 MB). Free memory was 82.4 MB in the beginning and 93.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:34,296 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 111.1 MB. Free memory is still 65.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:36:34,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.78 ms. Allocated memory is still 111.1 MB. Free memory was 82.2 MB in the beginning and 86.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:34,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.87 ms. Allocated memory is still 111.1 MB. Free memory was 86.3 MB in the beginning and 84.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:34,298 INFO L168 Benchmark]: Boogie Preprocessor took 60.06 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 83.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:34,298 INFO L168 Benchmark]: RCFGBuilder took 424.14 ms. Allocated memory is still 111.1 MB. Free memory was 83.4 MB in the beginning and 72.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:34,299 INFO L168 Benchmark]: TraceAbstraction took 264623.72 ms. Allocated memory was 111.1 MB in the beginning and 176.2 MB in the end (delta: 65.0 MB). Free memory was 71.6 MB in the beginning and 98.4 MB in the end (delta: -26.8 MB). Peak memory consumption was 102.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:34,299 INFO L168 Benchmark]: Witness Printer took 59.80 ms. Allocated memory is still 176.2 MB. Free memory was 98.4 MB in the beginning and 93.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:36:34,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 111.1 MB. Free memory is still 65.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 403.78 ms. Allocated memory is still 111.1 MB. Free memory was 82.2 MB in the beginning and 86.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.87 ms. Allocated memory is still 111.1 MB. Free memory was 86.3 MB in the beginning and 84.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.06 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 83.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 424.14 ms. Allocated memory is still 111.1 MB. Free memory was 83.4 MB in the beginning and 72.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 264623.72 ms. Allocated memory was 111.1 MB in the beginning and 176.2 MB in the end (delta: 65.0 MB). Free memory was 71.6 MB in the beginning and 98.4 MB in the end (delta: -26.8 MB). Peak memory consumption was 102.5 MB. Max. memory is 16.1 GB. * Witness Printer took 59.80 ms. Allocated memory is still 176.2 MB. Free memory was 98.4 MB in the beginning and 93.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 264.5s, OverallIterations: 21, TraceHistogramMax: 4, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 185.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 22.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 553 SDtfs, 1668 SDslu, 1867 SDs, 0 SdLazy, 4203 SolverSat, 665 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 40.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 826 GetRequests, 514 SyntacticMatches, 4 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1070 ImplicationChecksByTransitivity, 156.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=15, InterpolantAutomatonStates: 252, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 21 MinimizatonAttempts, 156 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 55 NumberOfFragments, 1781 HoareAnnotationTreeSize, 9 FomulaSimplifications, 14453 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 9 FomulaSimplificationsInter, 4148 FormulaSimplificationTreeSizeReductionInter, 22.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 43.9s InterpolantComputationTime, 709 NumberOfCodeBlocks, 655 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 688 ConstructedInterpolants, 3 QuantifiedInterpolants, 12203 SizeOfPredicates, 165 NumberOfNonLiveVariables, 2345 ConjunctsInSsa, 515 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 101/503 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((cond == 1 && 2 * (B % 4294967296) <= r) && p == 4) && 1 == cond) && 2 * (p / 2 * (B % 4294967296)) == d) && q == 0) && r == A % 4294967296) && r < d) && A % 4294967296 <= 5) || ((((((((q == 4 && cond == 1) && 1 == cond) && r + q * (B % 4294967296) == A % 4294967296) && 0 <= r) && 0 < 4 * (B % 4294967296)) && A % 4294967296 <= 5) && (r * -1 + A % 4294967296) / 2 == d) && p == 2)) || ((((((((((r % 4294967296 <= 5 && cond == 1) && B % 4294967296 <= 5) && p == 1) && 1 == cond) && r < 4294967296) && r + q * (B % 4294967296) == A % 4294967296) && 1 <= B % 4294967296) && 0 <= r) && d == B % 4294967296) && A % 4294967296 <= 5)) || ((((((((cond == 1 && 2 * (B % 4294967296) + r == A % 4294967296) && 1 <= cond) && q == 2) && A % 4294967296 < 4 * (B % 4294967296)) && p == 1) && 2 * (B % 4294967296) <= A % 4294967296) && A % 4294967296 <= 5) && (r * -1 + A % 4294967296) / 2 == d)) || (((((((cond == 1 && 1 <= cond) && B % 4294967296 <= 5) && (-1 + r * -1) / -2 < B % 4294967296 + 1) && p == 1) && d == B % 4294967296) && q == 0) && r == A % 4294967296)) || ((((((((cond == 1 && 1 <= cond) && B % 4294967296 <= 5) && d + r == A % 4294967296) && q == p) && 0 <= r) && d == B % 4294967296) && q == 1) && r < d)) || (((((((((cond == 1 && 4 * (B % 4294967296) <= r) && q == 0) && p == 8) && r == A % 4294967296) && d == 8 * (B % 4294967296)) && r < d) && !(0 == cond)) && (0 == cond || 1 == cond)) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 1 == cond) && r + q * (B % 4294967296) == A % 4294967296) && q == p) && 2 * (B % 4294967296) <= A % 4294967296) && d + r < 4 * (B % 4294967296)) && A % 4294967296 <= 5) && B % 4294967296 * p == d) && p == 2)) || (((((((((cond == 1 && d + r == A % 4294967296) && r + q * (B % 4294967296) == A % 4294967296) && q == p) && 0 <= r) && d % 4 == 0) && r < d) && A % 4294967296 <= 5) && !(0 == cond)) && (0 == cond || 1 == cond))) || ((((((((d * -1 / -2 <= r && cond == 1) && B % 4294967296 <= 5) && 1 == cond) && q == 0) && r == A % 4294967296) && r < d) && B % 4294967296 * p == d) && p == 2)) || ((((((1 <= cond && B % 4294967296 <= 5) && p == 1) && d == B % 4294967296) && q == 0) && r == A % 4294967296) && r < B % 4294967296) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((cond == 1 && B % 4294967296 <= 5) && 1 <= B % 4294967296) && d == B % 4294967296) && !(0 == cond)) || ((p == 1 && d == B % 4294967296) && !(0 == cond)) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && 1 <= cond) && B % 4294967296 <= 5) && (-1 + r * -1) / -2 < B % 4294967296 + 1) && p == 1) && d == B % 4294967296) && q == 0) && r == A % 4294967296) || ((((((((cond == 1 && 1 <= cond) && B % 4294967296 <= 5) && d + r == A % 4294967296) && q == p) && 0 <= r) && d == B % 4294967296) && q == 1) && r < d)) || (((((((((cond == 1 && 4 * (B % 4294967296) <= r) && q == 0) && r == A % 4294967296) && d == 8 * (B % 4294967296)) && r < d) && !(0 == cond)) && (0 == cond || 1 == cond)) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 2 * (B % 4294967296) <= r) && p == 4) && 1 == cond) && q == 0) && r == A % 4294967296) && r < d) && A % 4294967296 <= 5) && B % 4294967296 * p == d)) || ((((((((cond == 1 && 1 == cond) && r + q * (B % 4294967296) == A % 4294967296) && q == p) && 2 * (B % 4294967296) <= A % 4294967296) && d + r < 4 * (B % 4294967296)) && A % 4294967296 <= 5) && B % 4294967296 * p == d) && p == 2)) || ((((((((((r % 4294967296 <= 5 && cond == 1) && B % 4294967296 <= 5) && 1 == cond) && r < 4294967296) && r + q * (B % 4294967296) == A % 4294967296) && 1 <= B % 4294967296) && 0 <= r) && d == B % 4294967296) && A % 4294967296 <= 5) && B % 4294967296 * p == d)) || ((((((((d * -1 / -2 <= r && cond == 1) && B % 4294967296 <= 5) && 1 == cond) && q == 0) && r == A % 4294967296) && r < d) && B % 4294967296 * p == d) && p == 2)) || (((((((((q == 4 && cond == 1) && B % 4294967296 <= 5) && 1 == cond) && r + q * (B % 4294967296) == A % 4294967296) && 1 <= B % 4294967296) && 0 <= r) && A % 4294967296 <= 5) && B % 4294967296 * p == d) && p == 2)) || ((((((1 <= cond && B % 4294967296 <= 5) && p == 1) && d == B % 4294967296) && q == 0) && r == A % 4294967296) && r < B % 4294967296)) || (((((((((cond == 1 && r + q * (B % 4294967296) == A % 4294967296) && q == p) && 0 <= r) && d % 4 == 0) && r < d) && A % 4294967296 <= 5) && !(0 == cond)) && (0 == cond || 1 == cond)) && B % 4294967296 * p == d) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && B % 4294967296 <= 5) && 1 == cond) && 1 <= B % 4294967296) && d == B % 4294967296) && q == 0) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1) || ((((((((cond == 1 && 1 == cond) && 1 <= B % 4294967296) && 4 * (B % 4294967296) <= r) && q == 0) && r == A % 4294967296) && d == 8 * (B % 4294967296)) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 2 * (B % 4294967296) <= r) && p == 4) && 1 == cond) && 1 <= B % 4294967296) && q == 0) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((d * -1 / -2 <= r && cond == 1) && 1 == cond) && 1 <= B % 4294967296) && q == 0) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1) && p == 2) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((((d * -1 / -2 <= r && cond == 1) && 1 <= cond) && 2 * (B % 4294967296) == d) && 1 <= B % 4294967296) && q == 0) && r == A % 4294967296) && (r * -1 + 5) / -4294967296 < 1) && p == 2) || ((((((((cond == 1 && 2 * (B % 4294967296) <= r) && p == 4) && 1 == cond) && 1 <= B % 4294967296) && 2 * (p / 2 * (B % 4294967296)) == d) && q == 0) && r == A % 4294967296) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 1 <= cond) && B % 4294967296 <= 5) && 1 <= B % 4294967296) && d == B % 4294967296) && q == 0) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 1 <= cond) && 1 <= B % 4294967296) && 4 * (B % 4294967296) <= r) && q == 0) && p == 8) && r == A % 4294967296) && d == 8 * (B % 4294967296)) && (r * -1 + 5) / -4294967296 < 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((((d * -1 / -2 <= r && cond == 1) && 1 <= cond) && 2 * (B % 4294967296) == d) && 1 <= B % 4294967296) && q == 0) && r == A % 4294967296) && (r * -1 + 5) / -4294967296 < 1) && p == 2) || ((((((((cond == 1 && 2 * (B % 4294967296) <= r) && p == 4) && 1 == cond) && 1 <= B % 4294967296) && 2 * (p / 2 * (B % 4294967296)) == d) && q == 0) && r == A % 4294967296) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 1 <= cond) && B % 4294967296 <= 5) && 1 <= B % 4294967296) && d == B % 4294967296) && q == 0) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 1 <= cond) && 1 <= B % 4294967296) && 4 * (B % 4294967296) <= r) && q == 0) && p == 8) && r == A % 4294967296) && d == 8 * (B % 4294967296)) && (r * -1 + 5) / -4294967296 < 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((((d * -1 / -2 <= r && cond == 1) && 1 == cond) && r + q * (B % 4294967296) == A % 4294967296) && 1 <= B % 4294967296) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1) && p == 2) || (((((((cond == 1 && B % 4294967296 <= 5) && 1 <= B % 4294967296) && d == B % 4294967296) && q == 0) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 2 * (B % 4294967296) <= r) && p == 4) && 1 == cond) && r + q * (B % 4294967296) == A % 4294967296) && 1 <= B % 4294967296) && r == A % 4294967296) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1)) || ((((((((cond == 1 && 1 == cond) && r + q * (B % 4294967296) == A % 4294967296) && 1 <= B % 4294967296) && 4 * (B % 4294967296) <= r) && r == A % 4294967296) && d == 8 * (B % 4294967296)) && B % 4294967296 * p == d) && (r * -1 + 5) / -4294967296 < 1) RESULT: Ultimate proved your program to be correct! [2021-10-28 09:36:34,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feb74092-d1fd-461f-908f-5cd7d8453525/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...