./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e1c1708791fcf2960c26e9a8f23439327de305ab ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:06:23,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:06:23,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:06:23,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:06:23,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:06:23,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:06:23,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:06:23,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:06:23,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:06:23,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:06:23,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:06:23,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:06:23,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:06:23,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:06:23,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:06:23,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:06:23,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:06:23,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:06:23,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:06:23,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:06:23,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:06:23,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:06:23,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:06:23,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:06:23,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:06:23,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:06:23,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:06:23,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:06:23,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:06:23,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:06:23,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:06:23,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:06:23,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:06:23,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:06:23,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:06:23,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:06:23,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:06:23,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:06:23,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:06:23,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:06:23,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:06:23,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-13 01:06:23,230 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:06:23,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:06:23,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:06:23,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:06:23,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:06:23,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:06:23,240 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:06:23,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:06:23,240 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:06:23,241 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:06:23,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:06:23,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:06:23,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:06:23,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:06:23,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:06:23,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:06:23,243 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 01:06:23,244 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:06:23,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:06:23,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:06:23,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:06:23,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:06:23,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:06:23,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:06:23,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:06:23,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:06:23,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:06:23,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:06:23,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:06:23,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:06:23,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:06:23,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:06:23,249 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_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1c1708791fcf2960c26e9a8f23439327de305ab [2021-10-13 01:06:23,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:06:23,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:06:23,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:06:23,529 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:06:23,530 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:06:23,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c [2021-10-13 01:06:23,615 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/data/429fe7eae/12b9b332bca64b36aaf1b38106dc8325/FLAG1487a1d16 [2021-10-13 01:06:24,113 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:06:24,118 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/sv-benchmarks/c/bitvector/soft_float_2.c.cil.c [2021-10-13 01:06:24,128 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/data/429fe7eae/12b9b332bca64b36aaf1b38106dc8325/FLAG1487a1d16 [2021-10-13 01:06:24,468 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/data/429fe7eae/12b9b332bca64b36aaf1b38106dc8325 [2021-10-13 01:06:24,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:06:24,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:06:24,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:06:24,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:06:24,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:06:24,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:06:24" (1/1) ... [2021-10-13 01:06:24,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36bbd84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:24, skipping insertion in model container [2021-10-13 01:06:24,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:06:24" (1/1) ... [2021-10-13 01:06:24,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:06:24,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:06:24,699 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_ec681206-8372-433c-b2d3-04445cd032d1/sv-benchmarks/c/bitvector/soft_float_2.c.cil.c[422,435] [2021-10-13 01:06:24,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:06:24,765 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:06:24,775 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_ec681206-8372-433c-b2d3-04445cd032d1/sv-benchmarks/c/bitvector/soft_float_2.c.cil.c[422,435] [2021-10-13 01:06:24,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:06:24,825 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:06:24,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:24 WrapperNode [2021-10-13 01:06:24,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:06:24,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:06:24,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:06:24,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:06:24,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:24" (1/1) ... [2021-10-13 01:06:24,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:24" (1/1) ... [2021-10-13 01:06:24,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:06:24,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:06:24,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:06:24,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:06:24,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:24" (1/1) ... [2021-10-13 01:06:24,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:24" (1/1) ... [2021-10-13 01:06:24,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:24" (1/1) ... [2021-10-13 01:06:24,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:24" (1/1) ... [2021-10-13 01:06:24,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:24" (1/1) ... [2021-10-13 01:06:24,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:24" (1/1) ... [2021-10-13 01:06:24,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:24" (1/1) ... [2021-10-13 01:06:24,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:06:24,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:06:24,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:06:24,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:06:24,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:24" (1/1) ... [2021-10-13 01:06:24,939 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:06:24,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:24,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:06:25,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:06:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:06:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:06:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:06:25,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:06:25,606 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:06:25,606 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-10-13 01:06:25,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:06:25 BoogieIcfgContainer [2021-10-13 01:06:25,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:06:25,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:06:25,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:06:25,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:06:25,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:06:24" (1/3) ... [2021-10-13 01:06:25,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9579c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:06:25, skipping insertion in model container [2021-10-13 01:06:25,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:24" (2/3) ... [2021-10-13 01:06:25,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9579c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:06:25, skipping insertion in model container [2021-10-13 01:06:25,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:06:25" (3/3) ... [2021-10-13 01:06:25,627 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2.c.cil.c [2021-10-13 01:06:25,633 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:06:25,640 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-10-13 01:06:25,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:06:25,697 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 01:06:25,698 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-10-13 01:06:25,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 116 states have (on average 1.853448275862069) internal successors, (215), 162 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:25,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 01:06:25,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:25,726 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:25,726 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:25,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:25,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1807791520, now seen corresponding path program 1 times [2021-10-13 01:06:25,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:25,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009912595] [2021-10-13 01:06:25,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:25,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:25,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:25,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009912595] [2021-10-13 01:06:25,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009912595] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:06:25,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:06:25,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:06:25,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021502008] [2021-10-13 01:06:25,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:06:25,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:25,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:06:25,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:06:25,963 INFO L87 Difference]: Start difference. First operand has 163 states, 116 states have (on average 1.853448275862069) internal successors, (215), 162 states have internal predecessors, (215), 0 states have call successors, (0), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:26,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:26,020 INFO L93 Difference]: Finished difference Result 306 states and 402 transitions. [2021-10-13 01:06:26,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:06:26,022 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-10-13 01:06:26,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:26,034 INFO L225 Difference]: With dead ends: 306 [2021-10-13 01:06:26,034 INFO L226 Difference]: Without dead ends: 148 [2021-10-13 01:06:26,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:06:26,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-13 01:06:26,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-10-13 01:06:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 104 states have (on average 1.6826923076923077) internal successors, (175), 147 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 175 transitions. [2021-10-13 01:06:26,108 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 175 transitions. Word has length 7 [2021-10-13 01:06:26,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:26,110 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 175 transitions. [2021-10-13 01:06:26,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:26,110 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 175 transitions. [2021-10-13 01:06:26,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 01:06:26,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:26,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:26,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:06:26,113 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:26,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:26,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1806850254, now seen corresponding path program 1 times [2021-10-13 01:06:26,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:26,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886313944] [2021-10-13 01:06:26,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:26,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:26,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:26,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886313944] [2021-10-13 01:06:26,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886313944] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:06:26,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:06:26,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:06:26,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766632760] [2021-10-13 01:06:26,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:06:26,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:26,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:06:26,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:06:26,224 INFO L87 Difference]: Start difference. First operand 148 states and 175 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:26,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:26,449 INFO L93 Difference]: Finished difference Result 309 states and 369 transitions. [2021-10-13 01:06:26,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:06:26,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-10-13 01:06:26,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:26,454 INFO L225 Difference]: With dead ends: 309 [2021-10-13 01:06:26,455 INFO L226 Difference]: Without dead ends: 180 [2021-10-13 01:06:26,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:06:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-13 01:06:26,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 174. [2021-10-13 01:06:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 130 states have (on average 1.5615384615384615) internal successors, (203), 173 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:26,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 203 transitions. [2021-10-13 01:06:26,481 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 203 transitions. Word has length 7 [2021-10-13 01:06:26,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:26,482 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 203 transitions. [2021-10-13 01:06:26,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:26,482 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 203 transitions. [2021-10-13 01:06:26,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 01:06:26,483 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:26,483 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:26,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 01:06:26,488 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:26,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:26,489 INFO L82 PathProgramCache]: Analyzing trace with hash 794034541, now seen corresponding path program 1 times [2021-10-13 01:06:26,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:26,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586395457] [2021-10-13 01:06:26,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:26,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:26,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:26,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586395457] [2021-10-13 01:06:26,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586395457] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:06:26,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:06:26,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:06:26,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414726417] [2021-10-13 01:06:26,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:06:26,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:26,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:06:26,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:06:26,626 INFO L87 Difference]: Start difference. First operand 174 states and 203 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:26,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:26,705 INFO L93 Difference]: Finished difference Result 308 states and 359 transitions. [2021-10-13 01:06:26,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:06:26,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 01:06:26,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:26,708 INFO L225 Difference]: With dead ends: 308 [2021-10-13 01:06:26,708 INFO L226 Difference]: Without dead ends: 137 [2021-10-13 01:06:26,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:06:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-13 01:06:26,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-10-13 01:06:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 101 states have (on average 1.5742574257425743) internal successors, (159), 136 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2021-10-13 01:06:26,736 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 10 [2021-10-13 01:06:26,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:26,737 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2021-10-13 01:06:26,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:26,737 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2021-10-13 01:06:26,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 01:06:26,738 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:26,738 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:26,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 01:06:26,740 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:26,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:26,741 INFO L82 PathProgramCache]: Analyzing trace with hash -59736963, now seen corresponding path program 1 times [2021-10-13 01:06:26,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:26,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671241841] [2021-10-13 01:06:26,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:26,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:26,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:26,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671241841] [2021-10-13 01:06:26,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671241841] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:06:26,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:06:26,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:06:26,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620374094] [2021-10-13 01:06:26,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:06:26,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:26,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:06:26,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:06:26,842 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) 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) [2021-10-13 01:06:26,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:26,962 INFO L93 Difference]: Finished difference Result 196 states and 225 transitions. [2021-10-13 01:06:26,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:06:26,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 [2021-10-13 01:06:26,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:26,964 INFO L225 Difference]: With dead ends: 196 [2021-10-13 01:06:26,964 INFO L226 Difference]: Without dead ends: 189 [2021-10-13 01:06:26,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:06:26,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-10-13 01:06:26,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 138. [2021-10-13 01:06:26,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 107 states have (on average 1.5046728971962617) internal successors, (161), 137 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2021-10-13 01:06:26,984 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 13 [2021-10-13 01:06:26,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:26,985 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2021-10-13 01:06:26,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) 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) [2021-10-13 01:06:26,985 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2021-10-13 01:06:26,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 01:06:26,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:26,986 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:26,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 01:06:26,986 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:26,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:26,987 INFO L82 PathProgramCache]: Analyzing trace with hash -2067373522, now seen corresponding path program 1 times [2021-10-13 01:06:26,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:26,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919795451] [2021-10-13 01:06:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:26,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:27,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:27,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919795451] [2021-10-13 01:06:27,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919795451] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:06:27,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:06:27,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:06:27,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099098692] [2021-10-13 01:06:27,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:06:27,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:27,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:06:27,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:06:27,076 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-10-13 01:06:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:27,140 INFO L93 Difference]: Finished difference Result 239 states and 278 transitions. [2021-10-13 01:06:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:06:27,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 [2021-10-13 01:06:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:27,142 INFO L225 Difference]: With dead ends: 239 [2021-10-13 01:06:27,142 INFO L226 Difference]: Without dead ends: 120 [2021-10-13 01:06:27,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:06:27,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-13 01:06:27,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-10-13 01:06:27,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 91 states have (on average 1.5164835164835164) internal successors, (138), 119 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:27,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 138 transitions. [2021-10-13 01:06:27,148 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 138 transitions. Word has length 13 [2021-10-13 01:06:27,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:27,148 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 138 transitions. [2021-10-13 01:06:27,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2021-10-13 01:06:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 138 transitions. [2021-10-13 01:06:27,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 01:06:27,149 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:27,150 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:27,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 01:06:27,150 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:27,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:27,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1665546515, now seen corresponding path program 1 times [2021-10-13 01:06:27,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:27,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567416750] [2021-10-13 01:06:27,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:27,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:27,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:27,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567416750] [2021-10-13 01:06:27,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567416750] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:06:27,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:06:27,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:06:27,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35661279] [2021-10-13 01:06:27,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:06:27,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:27,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:06:27,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:06:27,189 INFO L87 Difference]: Start difference. First operand 120 states and 138 transitions. Second operand has 4 states, 3 states have (on average 5.0) 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) [2021-10-13 01:06:27,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:27,296 INFO L93 Difference]: Finished difference Result 272 states and 312 transitions. [2021-10-13 01:06:27,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:06:27,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) 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 [2021-10-13 01:06:27,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:27,307 INFO L225 Difference]: With dead ends: 272 [2021-10-13 01:06:27,307 INFO L226 Difference]: Without dead ends: 174 [2021-10-13 01:06:27,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:06:27,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-13 01:06:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 130. [2021-10-13 01:06:27,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 101 states have (on average 1.4851485148514851) internal successors, (150), 129 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:27,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 150 transitions. [2021-10-13 01:06:27,318 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 150 transitions. Word has length 15 [2021-10-13 01:06:27,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:27,319 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 150 transitions. [2021-10-13 01:06:27,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) 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) [2021-10-13 01:06:27,319 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 150 transitions. [2021-10-13 01:06:27,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 01:06:27,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:27,322 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:27,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 01:06:27,322 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:27,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:27,323 INFO L82 PathProgramCache]: Analyzing trace with hash 92334597, now seen corresponding path program 1 times [2021-10-13 01:06:27,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:27,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942205639] [2021-10-13 01:06:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:27,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:27,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:27,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942205639] [2021-10-13 01:06:27,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942205639] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:06:27,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:06:27,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:06:27,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514395220] [2021-10-13 01:06:27,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:06:27,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:27,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:06:27,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:06:27,403 INFO L87 Difference]: Start difference. First operand 130 states and 150 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:27,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:27,493 INFO L93 Difference]: Finished difference Result 172 states and 195 transitions. [2021-10-13 01:06:27,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:06:27,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 01:06:27,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:27,496 INFO L225 Difference]: With dead ends: 172 [2021-10-13 01:06:27,496 INFO L226 Difference]: Without dead ends: 171 [2021-10-13 01:06:27,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:06:27,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-13 01:06:27,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 129. [2021-10-13 01:06:27,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 101 states have (on average 1.4653465346534653) internal successors, (148), 128 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2021-10-13 01:06:27,503 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 16 [2021-10-13 01:06:27,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:27,504 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2021-10-13 01:06:27,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:27,504 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2021-10-13 01:06:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 01:06:27,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:27,507 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:27,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 01:06:27,507 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:27,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:27,509 INFO L82 PathProgramCache]: Analyzing trace with hash -493050292, now seen corresponding path program 1 times [2021-10-13 01:06:27,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:27,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157435496] [2021-10-13 01:06:27,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:27,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:27,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 01:06:27,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:27,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157435496] [2021-10-13 01:06:27,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157435496] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:06:27,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:06:27,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:06:27,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272758584] [2021-10-13 01:06:27,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:06:27,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:27,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:06:27,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:06:27,576 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:27,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:27,691 INFO L93 Difference]: Finished difference Result 231 states and 261 transitions. [2021-10-13 01:06:27,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:06:27,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 01:06:27,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:27,693 INFO L225 Difference]: With dead ends: 231 [2021-10-13 01:06:27,693 INFO L226 Difference]: Without dead ends: 222 [2021-10-13 01:06:27,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:06:27,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-13 01:06:27,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 127. [2021-10-13 01:06:27,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 104 states have (on average 1.4326923076923077) internal successors, (149), 126 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:27,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 149 transitions. [2021-10-13 01:06:27,700 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 149 transitions. Word has length 20 [2021-10-13 01:06:27,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:27,700 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 149 transitions. [2021-10-13 01:06:27,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 149 transitions. [2021-10-13 01:06:27,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 01:06:27,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:27,702 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:27,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 01:06:27,702 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:27,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:27,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1879445663, now seen corresponding path program 1 times [2021-10-13 01:06:27,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:27,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047869429] [2021-10-13 01:06:27,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:27,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:27,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:27,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:27,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047869429] [2021-10-13 01:06:27,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047869429] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:06:27,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:06:27,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:06:27,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253379195] [2021-10-13 01:06:27,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:06:27,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:27,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:06:27,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:06:27,741 INFO L87 Difference]: Start difference. First operand 127 states and 149 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:27,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:27,815 INFO L93 Difference]: Finished difference Result 171 states and 197 transitions. [2021-10-13 01:06:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:06:27,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-10-13 01:06:27,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:27,817 INFO L225 Difference]: With dead ends: 171 [2021-10-13 01:06:27,817 INFO L226 Difference]: Without dead ends: 168 [2021-10-13 01:06:27,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:06:27,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-10-13 01:06:27,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 119. [2021-10-13 01:06:27,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 99 states have (on average 1.4141414141414141) internal successors, (140), 118 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:27,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 140 transitions. [2021-10-13 01:06:27,828 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 140 transitions. Word has length 26 [2021-10-13 01:06:27,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:27,829 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 140 transitions. [2021-10-13 01:06:27,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:27,829 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 140 transitions. [2021-10-13 01:06:27,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 01:06:27,831 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:27,831 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:27,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 01:06:27,832 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:27,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:27,833 INFO L82 PathProgramCache]: Analyzing trace with hash 143003537, now seen corresponding path program 1 times [2021-10-13 01:06:27,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:27,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200291007] [2021-10-13 01:06:27,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:27,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:27,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:27,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200291007] [2021-10-13 01:06:27,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200291007] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:06:27,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:06:27,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:06:27,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459400137] [2021-10-13 01:06:27,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:06:27,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:27,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:06:27,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:06:27,908 INFO L87 Difference]: Start difference. First operand 119 states and 140 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:27,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:27,974 INFO L93 Difference]: Finished difference Result 170 states and 197 transitions. [2021-10-13 01:06:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:06:27,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-10-13 01:06:27,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:27,977 INFO L225 Difference]: With dead ends: 170 [2021-10-13 01:06:27,977 INFO L226 Difference]: Without dead ends: 168 [2021-10-13 01:06:27,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:06:27,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-10-13 01:06:27,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 122. [2021-10-13 01:06:27,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 103 states have (on average 1.3883495145631068) internal successors, (143), 121 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 143 transitions. [2021-10-13 01:06:27,986 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 143 transitions. Word has length 27 [2021-10-13 01:06:27,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:27,988 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 143 transitions. [2021-10-13 01:06:27,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:27,988 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 143 transitions. [2021-10-13 01:06:27,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 01:06:27,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:27,991 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:27,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 01:06:27,991 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:27,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:27,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1864633022, now seen corresponding path program 1 times [2021-10-13 01:06:27,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:27,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544326053] [2021-10-13 01:06:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:27,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:28,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:28,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:28,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544326053] [2021-10-13 01:06:28,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544326053] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:06:28,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:06:28,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:06:28,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954257968] [2021-10-13 01:06:28,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:06:28,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:28,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:06:28,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:06:28,073 INFO L87 Difference]: Start difference. First operand 122 states and 143 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:28,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:28,124 INFO L93 Difference]: Finished difference Result 227 states and 266 transitions. [2021-10-13 01:06:28,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:06:28,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-10-13 01:06:28,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:28,126 INFO L225 Difference]: With dead ends: 227 [2021-10-13 01:06:28,126 INFO L226 Difference]: Without dead ends: 124 [2021-10-13 01:06:28,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:06:28,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-13 01:06:28,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2021-10-13 01:06:28,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 103 states have (on average 1.3786407766990292) internal successors, (142), 121 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2021-10-13 01:06:28,138 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 27 [2021-10-13 01:06:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:28,138 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2021-10-13 01:06:28,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:28,139 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2021-10-13 01:06:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 01:06:28,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:28,143 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:28,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 01:06:28,143 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:28,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:28,144 INFO L82 PathProgramCache]: Analyzing trace with hash -842241641, now seen corresponding path program 1 times [2021-10-13 01:06:28,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:28,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412203807] [2021-10-13 01:06:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:28,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:28,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:28,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412203807] [2021-10-13 01:06:28,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412203807] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:28,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30879085] [2021-10-13 01:06:28,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:28,210 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:28,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:28,216 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:28,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 01:06:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:28,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:06:28,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:28,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30879085] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:28,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:28,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-13 01:06:28,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253592349] [2021-10-13 01:06:28,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 01:06:28,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:28,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:06:28,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:06:28,414 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:28,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:28,534 INFO L93 Difference]: Finished difference Result 276 states and 319 transitions. [2021-10-13 01:06:28,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:06:28,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 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 29 [2021-10-13 01:06:28,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:28,536 INFO L225 Difference]: With dead ends: 276 [2021-10-13 01:06:28,536 INFO L226 Difference]: Without dead ends: 178 [2021-10-13 01:06:28,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:06:28,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-13 01:06:28,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 127. [2021-10-13 01:06:28,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 108 states have (on average 1.3703703703703705) internal successors, (148), 126 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2021-10-13 01:06:28,546 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 29 [2021-10-13 01:06:28,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:28,547 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2021-10-13 01:06:28,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:28,547 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2021-10-13 01:06:28,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 01:06:28,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:28,548 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:28,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:28,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 01:06:28,776 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:28,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:28,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1541188357, now seen corresponding path program 1 times [2021-10-13 01:06:28,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:28,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26870462] [2021-10-13 01:06:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:28,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:28,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:28,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:28,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26870462] [2021-10-13 01:06:28,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26870462] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:28,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110645110] [2021-10-13 01:06:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:28,883 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:28,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:28,900 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:28,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 01:06:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:28,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 01:06:28,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:29,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110645110] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:29,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:29,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-13 01:06:29,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164904303] [2021-10-13 01:06:29,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 01:06:29,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:29,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:06:29,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:06:29,292 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:29,420 INFO L93 Difference]: Finished difference Result 232 states and 271 transitions. [2021-10-13 01:06:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:06:29,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 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 [2021-10-13 01:06:29,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:29,421 INFO L225 Difference]: With dead ends: 232 [2021-10-13 01:06:29,421 INFO L226 Difference]: Without dead ends: 129 [2021-10-13 01:06:29,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 32.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:06:29,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-13 01:06:29,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2021-10-13 01:06:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 108 states have (on average 1.3611111111111112) internal successors, (147), 126 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2021-10-13 01:06:29,430 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 32 [2021-10-13 01:06:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:29,432 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2021-10-13 01:06:29,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:29,432 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2021-10-13 01:06:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 01:06:29,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:29,433 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:29,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:29,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-13 01:06:29,660 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:29,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:29,660 INFO L82 PathProgramCache]: Analyzing trace with hash 750436112, now seen corresponding path program 2 times [2021-10-13 01:06:29,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:29,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022694832] [2021-10-13 01:06:29,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:29,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:29,705 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:29,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:29,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022694832] [2021-10-13 01:06:29,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022694832] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:29,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472649853] [2021-10-13 01:06:29,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:06:29,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:29,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:29,708 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:29,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 01:06:29,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:06:29,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:29,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:06:29,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:29,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472649853] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:29,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:29,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-13 01:06:29,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131081278] [2021-10-13 01:06:29,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:06:29,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:29,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:06:29,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:06:29,911 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2021-10-13 01:06:30,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:30,009 INFO L93 Difference]: Finished difference Result 281 states and 324 transitions. [2021-10-13 01:06:30,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:06:30,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) Word has length 34 [2021-10-13 01:06:30,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:30,011 INFO L225 Difference]: With dead ends: 281 [2021-10-13 01:06:30,011 INFO L226 Difference]: Without dead ends: 183 [2021-10-13 01:06:30,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:06:30,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-13 01:06:30,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 132. [2021-10-13 01:06:30,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 113 states have (on average 1.3539823008849559) internal successors, (153), 131 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2021-10-13 01:06:30,022 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 34 [2021-10-13 01:06:30,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:30,022 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2021-10-13 01:06:30,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2021-10-13 01:06:30,025 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2021-10-13 01:06:30,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 01:06:30,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:30,025 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:30,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:30,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:30,252 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:30,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:30,252 INFO L82 PathProgramCache]: Analyzing trace with hash -581967646, now seen corresponding path program 2 times [2021-10-13 01:06:30,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:30,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870732311] [2021-10-13 01:06:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:30,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:30,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:30,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870732311] [2021-10-13 01:06:30,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870732311] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:30,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219586018] [2021-10-13 01:06:30,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:06:30,330 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:30,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:30,339 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:30,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 01:06:30,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:06:30,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:30,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 01:06:30,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:30,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219586018] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:30,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:30,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-13 01:06:30,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126604005] [2021-10-13 01:06:30,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:06:30,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:06:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:06:30,686 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 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) [2021-10-13 01:06:30,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:30,791 INFO L93 Difference]: Finished difference Result 237 states and 276 transitions. [2021-10-13 01:06:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:06:30,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 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) Word has length 37 [2021-10-13 01:06:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:30,792 INFO L225 Difference]: With dead ends: 237 [2021-10-13 01:06:30,793 INFO L226 Difference]: Without dead ends: 134 [2021-10-13 01:06:30,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 44.2ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:06:30,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-13 01:06:30,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2021-10-13 01:06:30,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 113 states have (on average 1.345132743362832) internal successors, (152), 131 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:30,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 152 transitions. [2021-10-13 01:06:30,804 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 152 transitions. Word has length 37 [2021-10-13 01:06:30,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:30,804 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 152 transitions. [2021-10-13 01:06:30,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 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) [2021-10-13 01:06:30,804 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 152 transitions. [2021-10-13 01:06:30,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 01:06:30,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:30,805 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:30,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:31,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 01:06:31,028 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:31,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:31,028 INFO L82 PathProgramCache]: Analyzing trace with hash -856429257, now seen corresponding path program 3 times [2021-10-13 01:06:31,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:31,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531231087] [2021-10-13 01:06:31,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:31,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:31,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:31,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531231087] [2021-10-13 01:06:31,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531231087] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:31,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676490138] [2021-10-13 01:06:31,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:06:31,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:31,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:31,091 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:31,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 01:06:31,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 01:06:31,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:31,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:06:31,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:31,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676490138] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:31,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:31,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-13 01:06:31,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141266171] [2021-10-13 01:06:31,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 01:06:31,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:31,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:06:31,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:06:31,327 INFO L87 Difference]: Start difference. First operand 132 states and 152 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 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) [2021-10-13 01:06:31,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:31,428 INFO L93 Difference]: Finished difference Result 286 states and 329 transitions. [2021-10-13 01:06:31,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:06:31,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 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 39 [2021-10-13 01:06:31,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:31,431 INFO L225 Difference]: With dead ends: 286 [2021-10-13 01:06:31,432 INFO L226 Difference]: Without dead ends: 188 [2021-10-13 01:06:31,432 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:06:31,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-13 01:06:31,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 137. [2021-10-13 01:06:31,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 118 states have (on average 1.3389830508474576) internal successors, (158), 136 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:31,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 158 transitions. [2021-10-13 01:06:31,440 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 158 transitions. Word has length 39 [2021-10-13 01:06:31,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:31,441 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 158 transitions. [2021-10-13 01:06:31,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 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) [2021-10-13 01:06:31,442 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 158 transitions. [2021-10-13 01:06:31,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 01:06:31,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:31,443 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:31,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:31,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-13 01:06:31,659 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:31,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:31,659 INFO L82 PathProgramCache]: Analyzing trace with hash 997305691, now seen corresponding path program 3 times [2021-10-13 01:06:31,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:31,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493747915] [2021-10-13 01:06:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:31,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:31,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:31,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493747915] [2021-10-13 01:06:31,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493747915] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:31,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974116258] [2021-10-13 01:06:31,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:06:31,738 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:31,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:31,739 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:31,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 01:06:31,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 01:06:31,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:31,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 01:06:31,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:32,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974116258] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:32,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:32,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-13 01:06:32,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879810714] [2021-10-13 01:06:32,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 01:06:32,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:32,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:06:32,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:06:32,147 INFO L87 Difference]: Start difference. First operand 137 states and 158 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2021-10-13 01:06:32,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:32,270 INFO L93 Difference]: Finished difference Result 242 states and 281 transitions. [2021-10-13 01:06:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:06:32,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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 42 [2021-10-13 01:06:32,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:32,271 INFO L225 Difference]: With dead ends: 242 [2021-10-13 01:06:32,271 INFO L226 Difference]: Without dead ends: 139 [2021-10-13 01:06:32,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 51.6ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:06:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-13 01:06:32,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2021-10-13 01:06:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 118 states have (on average 1.3305084745762712) internal successors, (157), 136 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:32,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 157 transitions. [2021-10-13 01:06:32,278 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 157 transitions. Word has length 42 [2021-10-13 01:06:32,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:32,278 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 157 transitions. [2021-10-13 01:06:32,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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) [2021-10-13 01:06:32,279 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 157 transitions. [2021-10-13 01:06:32,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 01:06:32,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:32,279 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:32,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:32,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 01:06:32,492 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:32,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:32,492 INFO L82 PathProgramCache]: Analyzing trace with hash 701792112, now seen corresponding path program 4 times [2021-10-13 01:06:32,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:32,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437286229] [2021-10-13 01:06:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:32,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:32,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:32,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437286229] [2021-10-13 01:06:32,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437286229] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:32,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858380260] [2021-10-13 01:06:32,551 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 01:06:32,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:32,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:32,568 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:32,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 01:06:32,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 01:06:32,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:32,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:06:32,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:32,817 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:32,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858380260] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:32,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:32,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-13 01:06:32,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505673311] [2021-10-13 01:06:32,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 01:06:32,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:32,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 01:06:32,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:06:32,820 INFO L87 Difference]: Start difference. First operand 137 states and 157 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 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) [2021-10-13 01:06:32,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:32,911 INFO L93 Difference]: Finished difference Result 291 states and 334 transitions. [2021-10-13 01:06:32,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 01:06:32,912 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 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 44 [2021-10-13 01:06:32,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:32,913 INFO L225 Difference]: With dead ends: 291 [2021-10-13 01:06:32,914 INFO L226 Difference]: Without dead ends: 193 [2021-10-13 01:06:32,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 25.5ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:06:32,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-10-13 01:06:32,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142. [2021-10-13 01:06:32,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 141 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:32,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2021-10-13 01:06:32,922 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 44 [2021-10-13 01:06:32,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:32,922 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2021-10-13 01:06:32,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 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) [2021-10-13 01:06:32,923 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2021-10-13 01:06:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 01:06:32,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:32,924 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:32,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:33,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 01:06:33,143 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:33,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:33,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1963574402, now seen corresponding path program 4 times [2021-10-13 01:06:33,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:33,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286100595] [2021-10-13 01:06:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:33,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:33,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:33,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286100595] [2021-10-13 01:06:33,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286100595] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:33,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601071685] [2021-10-13 01:06:33,241 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 01:06:33,241 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:33,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:33,242 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:33,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 01:06:33,399 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 01:06:33,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:33,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 01:06:33,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:33,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601071685] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:33,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:33,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-13 01:06:33,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816665454] [2021-10-13 01:06:33,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 01:06:33,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:33,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 01:06:33,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:06:33,677 INFO L87 Difference]: Start difference. First operand 142 states and 163 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:33,877 INFO L93 Difference]: Finished difference Result 247 states and 286 transitions. [2021-10-13 01:06:33,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 01:06:33,878 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-13 01:06:33,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:33,879 INFO L225 Difference]: With dead ends: 247 [2021-10-13 01:06:33,879 INFO L226 Difference]: Without dead ends: 144 [2021-10-13 01:06:33,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 70.6ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:06:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-13 01:06:33,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2021-10-13 01:06:33,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 123 states have (on average 1.3170731707317074) internal successors, (162), 141 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2021-10-13 01:06:33,888 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 47 [2021-10-13 01:06:33,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:33,888 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2021-10-13 01:06:33,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:33,888 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2021-10-13 01:06:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-13 01:06:33,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:33,889 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:33,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:34,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:34,108 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:34,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:34,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1573087447, now seen corresponding path program 5 times [2021-10-13 01:06:34,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:34,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871981490] [2021-10-13 01:06:34,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:34,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:34,168 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:34,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:34,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871981490] [2021-10-13 01:06:34,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871981490] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:34,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953073691] [2021-10-13 01:06:34,169 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 01:06:34,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:34,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:34,180 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:34,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 01:06:34,353 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 01:06:34,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:34,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 01:06:34,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:34,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953073691] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:34,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:34,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-13 01:06:34,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184573856] [2021-10-13 01:06:34,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 01:06:34,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:34,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 01:06:34,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:06:34,494 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:34,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:34,614 INFO L93 Difference]: Finished difference Result 296 states and 339 transitions. [2021-10-13 01:06:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 01:06:34,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-13 01:06:34,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:34,616 INFO L225 Difference]: With dead ends: 296 [2021-10-13 01:06:34,616 INFO L226 Difference]: Without dead ends: 198 [2021-10-13 01:06:34,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 29.0ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:06:34,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-13 01:06:34,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 147. [2021-10-13 01:06:34,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 128 states have (on average 1.3125) internal successors, (168), 146 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 168 transitions. [2021-10-13 01:06:34,625 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 168 transitions. Word has length 49 [2021-10-13 01:06:34,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:34,625 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 168 transitions. [2021-10-13 01:06:34,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:34,625 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 168 transitions. [2021-10-13 01:06:34,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 01:06:34,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:34,626 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:34,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:34,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:34,852 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:34,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:34,852 INFO L82 PathProgramCache]: Analyzing trace with hash -59437637, now seen corresponding path program 5 times [2021-10-13 01:06:34,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:34,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420696963] [2021-10-13 01:06:34,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:34,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:34,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:34,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420696963] [2021-10-13 01:06:34,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420696963] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:34,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974453418] [2021-10-13 01:06:34,952 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 01:06:34,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:34,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:34,953 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:34,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 01:06:35,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 01:06:35,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:35,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 01:06:35,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:35,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974453418] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:35,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:35,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-13 01:06:35,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757587675] [2021-10-13 01:06:35,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 01:06:35,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:35,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 01:06:35,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:06:35,491 INFO L87 Difference]: Start difference. First operand 147 states and 168 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:35,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:35,618 INFO L93 Difference]: Finished difference Result 252 states and 291 transitions. [2021-10-13 01:06:35,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 01:06:35,619 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-13 01:06:35,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:35,620 INFO L225 Difference]: With dead ends: 252 [2021-10-13 01:06:35,620 INFO L226 Difference]: Without dead ends: 149 [2021-10-13 01:06:35,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 85.7ms TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:06:35,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-13 01:06:35,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2021-10-13 01:06:35,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 128 states have (on average 1.3046875) internal successors, (167), 146 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 167 transitions. [2021-10-13 01:06:35,628 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 167 transitions. Word has length 52 [2021-10-13 01:06:35,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:35,629 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 167 transitions. [2021-10-13 01:06:35,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:35,629 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 167 transitions. [2021-10-13 01:06:35,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-13 01:06:35,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:35,630 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:35,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:35,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:35,856 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:35,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:35,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1216264240, now seen corresponding path program 6 times [2021-10-13 01:06:35,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:35,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198554638] [2021-10-13 01:06:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:35,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:35,925 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:35,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:35,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198554638] [2021-10-13 01:06:35,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198554638] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:35,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136164664] [2021-10-13 01:06:35,926 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 01:06:35,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:35,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:35,927 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:35,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 01:06:36,174 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 01:06:36,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:36,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 01:06:36,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:36,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136164664] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:36,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:36,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-13 01:06:36,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835526430] [2021-10-13 01:06:36,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 01:06:36,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:36,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 01:06:36,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 01:06:36,311 INFO L87 Difference]: Start difference. First operand 147 states and 167 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:36,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:36,406 INFO L93 Difference]: Finished difference Result 301 states and 344 transitions. [2021-10-13 01:06:36,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 01:06:36,407 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-13 01:06:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:36,409 INFO L225 Difference]: With dead ends: 301 [2021-10-13 01:06:36,409 INFO L226 Difference]: Without dead ends: 203 [2021-10-13 01:06:36,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 36.9ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 01:06:36,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-10-13 01:06:36,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 152. [2021-10-13 01:06:36,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 133 states have (on average 1.300751879699248) internal successors, (173), 151 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:36,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 173 transitions. [2021-10-13 01:06:36,419 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 173 transitions. Word has length 54 [2021-10-13 01:06:36,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:36,419 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 173 transitions. [2021-10-13 01:06:36,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:36,420 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 173 transitions. [2021-10-13 01:06:36,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 01:06:36,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:36,420 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:36,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:36,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:36,636 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:36,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:36,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1391697954, now seen corresponding path program 6 times [2021-10-13 01:06:36,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:36,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075617089] [2021-10-13 01:06:36,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:36,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:36,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:36,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075617089] [2021-10-13 01:06:36,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075617089] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:36,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539306565] [2021-10-13 01:06:36,788 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 01:06:36,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:36,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:36,790 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:36,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 01:06:37,205 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 01:06:37,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:37,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 01:06:37,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:37,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539306565] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:37,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:37,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-13 01:06:37,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344253606] [2021-10-13 01:06:37,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 01:06:37,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:37,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 01:06:37,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-13 01:06:37,619 INFO L87 Difference]: Start difference. First operand 152 states and 173 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2021-10-13 01:06:37,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:37,806 INFO L93 Difference]: Finished difference Result 257 states and 296 transitions. [2021-10-13 01:06:37,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 01:06:37,807 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) Word has length 57 [2021-10-13 01:06:37,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:37,808 INFO L225 Difference]: With dead ends: 257 [2021-10-13 01:06:37,808 INFO L226 Difference]: Without dead ends: 154 [2021-10-13 01:06:37,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-13 01:06:37,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-13 01:06:37,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2021-10-13 01:06:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 133 states have (on average 1.2932330827067668) internal successors, (172), 151 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 172 transitions. [2021-10-13 01:06:37,818 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 172 transitions. Word has length 57 [2021-10-13 01:06:37,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:37,819 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 172 transitions. [2021-10-13 01:06:37,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 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) [2021-10-13 01:06:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 172 transitions. [2021-10-13 01:06:37,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-13 01:06:37,820 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:37,820 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:37,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:38,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:38,030 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:38,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:38,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1755634807, now seen corresponding path program 7 times [2021-10-13 01:06:38,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:38,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725406932] [2021-10-13 01:06:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:38,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:38,121 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:38,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:38,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725406932] [2021-10-13 01:06:38,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725406932] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:38,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425105633] [2021-10-13 01:06:38,122 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 01:06:38,123 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:38,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:38,124 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:38,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 01:06:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:38,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 01:06:38,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:38,560 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:38,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425105633] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:38,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:38,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-13 01:06:38,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510697259] [2021-10-13 01:06:38,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 01:06:38,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:38,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 01:06:38,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-13 01:06:38,561 INFO L87 Difference]: Start difference. First operand 152 states and 172 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 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) [2021-10-13 01:06:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:38,708 INFO L93 Difference]: Finished difference Result 306 states and 349 transitions. [2021-10-13 01:06:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 01:06:38,709 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 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) Word has length 59 [2021-10-13 01:06:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:38,711 INFO L225 Difference]: With dead ends: 306 [2021-10-13 01:06:38,711 INFO L226 Difference]: Without dead ends: 208 [2021-10-13 01:06:38,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-13 01:06:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-13 01:06:38,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 157. [2021-10-13 01:06:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 138 states have (on average 1.289855072463768) internal successors, (178), 156 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:38,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 178 transitions. [2021-10-13 01:06:38,721 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 178 transitions. Word has length 59 [2021-10-13 01:06:38,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:38,721 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 178 transitions. [2021-10-13 01:06:38,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 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) [2021-10-13 01:06:38,722 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 178 transitions. [2021-10-13 01:06:38,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 01:06:38,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:38,722 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:38,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:38,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-13 01:06:38,948 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:38,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:38,948 INFO L82 PathProgramCache]: Analyzing trace with hash 780367387, now seen corresponding path program 7 times [2021-10-13 01:06:38,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:38,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220704250] [2021-10-13 01:06:38,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:38,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:39,096 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:39,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:39,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220704250] [2021-10-13 01:06:39,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220704250] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:39,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8658189] [2021-10-13 01:06:39,097 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 01:06:39,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:39,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:39,104 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:39,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 01:06:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:39,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 01:06:39,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:39,844 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:39,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8658189] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:39,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:39,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-13 01:06:39,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529351302] [2021-10-13 01:06:39,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 01:06:39,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:39,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 01:06:39,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-13 01:06:39,847 INFO L87 Difference]: Start difference. First operand 157 states and 178 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:40,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:40,126 INFO L93 Difference]: Finished difference Result 262 states and 301 transitions. [2021-10-13 01:06:40,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 01:06:40,127 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 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 62 [2021-10-13 01:06:40,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:40,129 INFO L225 Difference]: With dead ends: 262 [2021-10-13 01:06:40,129 INFO L226 Difference]: Without dead ends: 159 [2021-10-13 01:06:40,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 7 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 149.7ms TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-13 01:06:40,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-13 01:06:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2021-10-13 01:06:40,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 138 states have (on average 1.2826086956521738) internal successors, (177), 156 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:40,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 177 transitions. [2021-10-13 01:06:40,138 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 177 transitions. Word has length 62 [2021-10-13 01:06:40,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:40,139 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 177 transitions. [2021-10-13 01:06:40,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:40,139 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 177 transitions. [2021-10-13 01:06:40,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-13 01:06:40,140 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:40,140 INFO L512 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:40,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:40,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-13 01:06:40,368 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:40,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:40,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1617487824, now seen corresponding path program 8 times [2021-10-13 01:06:40,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:40,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119268485] [2021-10-13 01:06:40,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:40,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:40,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:40,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119268485] [2021-10-13 01:06:40,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119268485] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:40,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879918246] [2021-10-13 01:06:40,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:06:40,484 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:40,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:40,485 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:40,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 01:06:40,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:06:40,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:40,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 01:06:40,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:41,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879918246] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:41,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:41,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-13 01:06:41,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756936787] [2021-10-13 01:06:41,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 01:06:41,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:41,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 01:06:41,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-13 01:06:41,049 INFO L87 Difference]: Start difference. First operand 157 states and 177 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:41,236 INFO L93 Difference]: Finished difference Result 311 states and 354 transitions. [2021-10-13 01:06:41,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 01:06:41,238 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 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 64 [2021-10-13 01:06:41,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:41,240 INFO L225 Difference]: With dead ends: 311 [2021-10-13 01:06:41,240 INFO L226 Difference]: Without dead ends: 213 [2021-10-13 01:06:41,240 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 67.2ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-13 01:06:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-13 01:06:41,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 162. [2021-10-13 01:06:41,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 143 states have (on average 1.2797202797202798) internal successors, (183), 161 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:41,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 183 transitions. [2021-10-13 01:06:41,250 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 183 transitions. Word has length 64 [2021-10-13 01:06:41,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:41,250 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 183 transitions. [2021-10-13 01:06:41,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:41,251 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 183 transitions. [2021-10-13 01:06:41,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 01:06:41,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:41,252 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:41,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:41,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-13 01:06:41,472 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:41,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:41,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1433891778, now seen corresponding path program 8 times [2021-10-13 01:06:41,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:41,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157947577] [2021-10-13 01:06:41,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:41,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:41,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:41,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157947577] [2021-10-13 01:06:41,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157947577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:41,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561118551] [2021-10-13 01:06:41,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:06:41,671 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:41,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:41,676 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:41,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 01:06:42,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:06:42,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:42,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 01:06:42,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:42,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561118551] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:42,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:42,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-13 01:06:42,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564302843] [2021-10-13 01:06:42,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 01:06:42,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:42,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 01:06:42,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-13 01:06:42,576 INFO L87 Difference]: Start difference. First operand 162 states and 183 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:42,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:42,859 INFO L93 Difference]: Finished difference Result 267 states and 306 transitions. [2021-10-13 01:06:42,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 01:06:42,860 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-13 01:06:42,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:42,862 INFO L225 Difference]: With dead ends: 267 [2021-10-13 01:06:42,862 INFO L226 Difference]: Without dead ends: 164 [2021-10-13 01:06:42,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 59 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 174.4ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-13 01:06:42,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-13 01:06:42,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2021-10-13 01:06:42,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 143 states have (on average 1.2727272727272727) internal successors, (182), 161 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 182 transitions. [2021-10-13 01:06:42,893 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 182 transitions. Word has length 67 [2021-10-13 01:06:42,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:42,893 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 182 transitions. [2021-10-13 01:06:42,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:42,893 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 182 transitions. [2021-10-13 01:06:42,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 01:06:42,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:42,894 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:42,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:43,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-13 01:06:43,119 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:43,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:43,119 INFO L82 PathProgramCache]: Analyzing trace with hash -645773289, now seen corresponding path program 9 times [2021-10-13 01:06:43,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:43,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595263349] [2021-10-13 01:06:43,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:43,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:43,251 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:43,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:43,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595263349] [2021-10-13 01:06:43,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595263349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:43,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722883705] [2021-10-13 01:06:43,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:06:43,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:43,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:43,253 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:43,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 01:06:44,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-13 01:06:44,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:44,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 01:06:44,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:44,678 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:44,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722883705] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:44,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:44,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 01:06:44,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563749535] [2021-10-13 01:06:44,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 01:06:44,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:44,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 01:06:44,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-13 01:06:44,681 INFO L87 Difference]: Start difference. First operand 162 states and 182 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:44,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:44,815 INFO L93 Difference]: Finished difference Result 316 states and 359 transitions. [2021-10-13 01:06:44,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 01:06:44,816 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-10-13 01:06:44,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:44,817 INFO L225 Difference]: With dead ends: 316 [2021-10-13 01:06:44,817 INFO L226 Difference]: Without dead ends: 218 [2021-10-13 01:06:44,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 77.5ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-13 01:06:44,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-13 01:06:44,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 167. [2021-10-13 01:06:44,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 148 states have (on average 1.2702702702702702) internal successors, (188), 166 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 188 transitions. [2021-10-13 01:06:44,827 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 188 transitions. Word has length 69 [2021-10-13 01:06:44,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:44,827 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 188 transitions. [2021-10-13 01:06:44,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:44,828 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 188 transitions. [2021-10-13 01:06:44,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-13 01:06:44,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:44,829 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:44,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-10-13 01:06:45,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:45,034 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:45,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:45,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1702028923, now seen corresponding path program 9 times [2021-10-13 01:06:45,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:45,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125633783] [2021-10-13 01:06:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:45,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:45,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:45,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125633783] [2021-10-13 01:06:45,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125633783] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:45,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069257287] [2021-10-13 01:06:45,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:06:45,219 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:45,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:45,220 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:45,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 01:06:47,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-13 01:06:47,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:47,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 01:06:47,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:48,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069257287] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:48,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:48,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-13 01:06:48,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574668452] [2021-10-13 01:06:48,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 01:06:48,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:48,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 01:06:48,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 01:06:48,030 INFO L87 Difference]: Start difference. First operand 167 states and 188 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:48,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:48,316 INFO L93 Difference]: Finished difference Result 272 states and 311 transitions. [2021-10-13 01:06:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 01:06:48,316 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 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 72 [2021-10-13 01:06:48,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:48,318 INFO L225 Difference]: With dead ends: 272 [2021-10-13 01:06:48,318 INFO L226 Difference]: Without dead ends: 169 [2021-10-13 01:06:48,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 63 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 218.2ms TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 01:06:48,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-13 01:06:48,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2021-10-13 01:06:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 148 states have (on average 1.2635135135135136) internal successors, (187), 166 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 187 transitions. [2021-10-13 01:06:48,327 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 187 transitions. Word has length 72 [2021-10-13 01:06:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:48,328 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 187 transitions. [2021-10-13 01:06:48,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:48,328 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 187 transitions. [2021-10-13 01:06:48,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-13 01:06:48,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:48,329 INFO L512 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:48,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:48,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-13 01:06:48,535 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:48,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:48,536 INFO L82 PathProgramCache]: Analyzing trace with hash -664014704, now seen corresponding path program 10 times [2021-10-13 01:06:48,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:48,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382090786] [2021-10-13 01:06:48,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:48,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:48,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:48,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382090786] [2021-10-13 01:06:48,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382090786] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:48,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836574499] [2021-10-13 01:06:48,679 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 01:06:48,679 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:48,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:48,680 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:48,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 01:06:49,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 01:06:49,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:49,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 01:06:49,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:49,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836574499] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:49,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:49,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 01:06:49,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508720084] [2021-10-13 01:06:49,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 01:06:49,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:49,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 01:06:49,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-13 01:06:49,342 INFO L87 Difference]: Start difference. First operand 167 states and 187 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 15 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:49,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:49,469 INFO L93 Difference]: Finished difference Result 321 states and 364 transitions. [2021-10-13 01:06:49,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 01:06:49,470 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 15 states have internal predecessors, (81), 0 states have call successors, (0), 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 74 [2021-10-13 01:06:49,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:49,471 INFO L225 Difference]: With dead ends: 321 [2021-10-13 01:06:49,471 INFO L226 Difference]: Without dead ends: 223 [2021-10-13 01:06:49,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 79.3ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-13 01:06:49,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-10-13 01:06:49,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 172. [2021-10-13 01:06:49,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 153 states have (on average 1.261437908496732) internal successors, (193), 171 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:49,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 193 transitions. [2021-10-13 01:06:49,482 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 193 transitions. Word has length 74 [2021-10-13 01:06:49,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:49,483 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 193 transitions. [2021-10-13 01:06:49,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 15 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 193 transitions. [2021-10-13 01:06:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-13 01:06:49,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:49,484 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:49,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:49,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:49,700 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:49,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:49,700 INFO L82 PathProgramCache]: Analyzing trace with hash -562086046, now seen corresponding path program 10 times [2021-10-13 01:06:49,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:49,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280950202] [2021-10-13 01:06:49,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:49,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:49,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:49,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280950202] [2021-10-13 01:06:49,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280950202] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:49,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275900931] [2021-10-13 01:06:49,899 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 01:06:49,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:49,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:49,904 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:49,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 01:06:50,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 01:06:50,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:50,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 01:06:50,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:51,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275900931] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:51,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:51,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-13 01:06:51,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404775888] [2021-10-13 01:06:51,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 01:06:51,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:51,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 01:06:51,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-13 01:06:51,108 INFO L87 Difference]: Start difference. First operand 172 states and 193 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:51,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:51,435 INFO L93 Difference]: Finished difference Result 277 states and 316 transitions. [2021-10-13 01:06:51,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 01:06:51,440 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-10-13 01:06:51,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:51,442 INFO L225 Difference]: With dead ends: 277 [2021-10-13 01:06:51,442 INFO L226 Difference]: Without dead ends: 174 [2021-10-13 01:06:51,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 67 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 244.3ms TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-13 01:06:51,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-13 01:06:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2021-10-13 01:06:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 153 states have (on average 1.2549019607843137) internal successors, (192), 171 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 192 transitions. [2021-10-13 01:06:51,453 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 192 transitions. Word has length 77 [2021-10-13 01:06:51,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:51,453 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 192 transitions. [2021-10-13 01:06:51,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:51,455 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 192 transitions. [2021-10-13 01:06:51,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-13 01:06:51,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:51,456 INFO L512 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:51,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:51,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:51,674 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:51,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:51,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1069919159, now seen corresponding path program 11 times [2021-10-13 01:06:51,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:51,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716867171] [2021-10-13 01:06:51,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:51,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:51,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:51,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716867171] [2021-10-13 01:06:51,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716867171] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:51,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219141871] [2021-10-13 01:06:51,837 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 01:06:51,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:51,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:51,837 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:51,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 01:06:52,289 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-13 01:06:52,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:52,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 01:06:52,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:52,518 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:52,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219141871] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:52,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:52,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 01:06:52,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053330512] [2021-10-13 01:06:52,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 01:06:52,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:52,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 01:06:52,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-13 01:06:52,521 INFO L87 Difference]: Start difference. First operand 172 states and 192 transitions. Second operand has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:52,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:52,667 INFO L93 Difference]: Finished difference Result 326 states and 369 transitions. [2021-10-13 01:06:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 01:06:52,668 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 0 states have call successors, (0), 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 79 [2021-10-13 01:06:52,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:52,670 INFO L225 Difference]: With dead ends: 326 [2021-10-13 01:06:52,670 INFO L226 Difference]: Without dead ends: 228 [2021-10-13 01:06:52,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-13 01:06:52,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-13 01:06:52,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 177. [2021-10-13 01:06:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 158 states have (on average 1.2531645569620253) internal successors, (198), 176 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:52,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2021-10-13 01:06:52,681 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 79 [2021-10-13 01:06:52,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:52,681 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2021-10-13 01:06:52,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:52,682 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2021-10-13 01:06:52,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-13 01:06:52,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:52,682 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:52,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-13 01:06:52,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-13 01:06:52,900 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:52,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:52,900 INFO L82 PathProgramCache]: Analyzing trace with hash -510042405, now seen corresponding path program 11 times [2021-10-13 01:06:52,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:52,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177041098] [2021-10-13 01:06:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:52,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:53,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:53,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177041098] [2021-10-13 01:06:53,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177041098] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:53,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661586080] [2021-10-13 01:06:53,116 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 01:06:53,119 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:53,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:53,120 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:53,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 01:06:53,637 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-13 01:06:53,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:53,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 01:06:53,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:54,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661586080] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:54,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:54,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 01:06:54,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891275706] [2021-10-13 01:06:54,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 01:06:54,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:54,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 01:06:54,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-13 01:06:54,324 INFO L87 Difference]: Start difference. First operand 177 states and 198 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:54,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:54,731 INFO L93 Difference]: Finished difference Result 282 states and 321 transitions. [2021-10-13 01:06:54,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 01:06:54,732 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 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 82 [2021-10-13 01:06:54,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:54,733 INFO L225 Difference]: With dead ends: 282 [2021-10-13 01:06:54,734 INFO L226 Difference]: Without dead ends: 179 [2021-10-13 01:06:54,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 71 SyntacticMatches, 11 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 264.2ms TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-10-13 01:06:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-10-13 01:06:54,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2021-10-13 01:06:54,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 158 states have (on average 1.2468354430379747) internal successors, (197), 176 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:54,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 197 transitions. [2021-10-13 01:06:54,744 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 197 transitions. Word has length 82 [2021-10-13 01:06:54,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:54,745 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 197 transitions. [2021-10-13 01:06:54,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:54,745 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 197 transitions. [2021-10-13 01:06:54,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-13 01:06:54,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:54,746 INFO L512 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:54,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:54,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-13 01:06:54,960 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:54,960 INFO L82 PathProgramCache]: Analyzing trace with hash -455749392, now seen corresponding path program 12 times [2021-10-13 01:06:54,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:54,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62842689] [2021-10-13 01:06:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:54,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:55,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:55,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62842689] [2021-10-13 01:06:55,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62842689] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:55,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344215751] [2021-10-13 01:06:55,133 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 01:06:55,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:55,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:55,138 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:55,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 01:06:55,828 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-10-13 01:06:55,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:55,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 01:06:55,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:56,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344215751] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:56,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:56,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 01:06:56,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968647930] [2021-10-13 01:06:56,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 01:06:56,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:56,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 01:06:56,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-13 01:06:56,078 INFO L87 Difference]: Start difference. First operand 177 states and 197 transitions. Second operand has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:56,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:56,226 INFO L93 Difference]: Finished difference Result 331 states and 374 transitions. [2021-10-13 01:06:56,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 01:06:56,233 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-10-13 01:06:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:56,235 INFO L225 Difference]: With dead ends: 331 [2021-10-13 01:06:56,235 INFO L226 Difference]: Without dead ends: 233 [2021-10-13 01:06:56,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 113.6ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-13 01:06:56,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-10-13 01:06:56,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 182. [2021-10-13 01:06:56,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 163 states have (on average 1.2453987730061349) internal successors, (203), 181 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 203 transitions. [2021-10-13 01:06:56,246 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 203 transitions. Word has length 84 [2021-10-13 01:06:56,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:56,247 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 203 transitions. [2021-10-13 01:06:56,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 203 transitions. [2021-10-13 01:06:56,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-13 01:06:56,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:56,248 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:56,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:56,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-13 01:06:56,454 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:56,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:56,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1937048322, now seen corresponding path program 12 times [2021-10-13 01:06:56,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:56,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43627563] [2021-10-13 01:06:56,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:56,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:56,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:56,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43627563] [2021-10-13 01:06:56,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43627563] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:56,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789807027] [2021-10-13 01:06:56,702 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 01:06:56,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:56,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:56,704 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:56,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 01:06:57,480 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-13 01:06:57,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:06:57,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 01:06:57,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:58,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789807027] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:58,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:06:58,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-13 01:06:58,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931275294] [2021-10-13 01:06:58,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 01:06:58,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:58,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 01:06:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-13 01:06:58,230 INFO L87 Difference]: Start difference. First operand 182 states and 203 transitions. Second operand has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:58,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:58,710 INFO L93 Difference]: Finished difference Result 287 states and 326 transitions. [2021-10-13 01:06:58,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 01:06:58,711 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 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 87 [2021-10-13 01:06:58,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:58,713 INFO L225 Difference]: With dead ends: 287 [2021-10-13 01:06:58,713 INFO L226 Difference]: Without dead ends: 184 [2021-10-13 01:06:58,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 75 SyntacticMatches, 12 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 327.3ms TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-13 01:06:58,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-13 01:06:58,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2021-10-13 01:06:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 163 states have (on average 1.2392638036809815) internal successors, (202), 181 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:58,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 202 transitions. [2021-10-13 01:06:58,729 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 202 transitions. Word has length 87 [2021-10-13 01:06:58,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:58,729 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 202 transitions. [2021-10-13 01:06:58,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:58,730 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 202 transitions. [2021-10-13 01:06:58,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-13 01:06:58,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:58,731 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:58,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:58,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-13 01:06:58,937 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:06:58,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:58,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1851328343, now seen corresponding path program 13 times [2021-10-13 01:06:58,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:58,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072061251] [2021-10-13 01:06:58,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:58,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:59,150 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:59,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:59,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072061251] [2021-10-13 01:06:59,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072061251] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:06:59,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790090557] [2021-10-13 01:06:59,151 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 01:06:59,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:59,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:59,160 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:59,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 01:06:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:59,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 01:06:59,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:00,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790090557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:00,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:00,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 01:07:00,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559533494] [2021-10-13 01:07:00,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 01:07:00,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:00,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 01:07:00,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-13 01:07:00,102 INFO L87 Difference]: Start difference. First operand 182 states and 202 transitions. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:00,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:00,303 INFO L93 Difference]: Finished difference Result 336 states and 379 transitions. [2021-10-13 01:07:00,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 01:07:00,308 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 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 89 [2021-10-13 01:07:00,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:00,310 INFO L225 Difference]: With dead ends: 336 [2021-10-13 01:07:00,310 INFO L226 Difference]: Without dead ends: 238 [2021-10-13 01:07:00,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 120.2ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-13 01:07:00,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-10-13 01:07:00,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 187. [2021-10-13 01:07:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 168 states have (on average 1.2380952380952381) internal successors, (208), 186 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 208 transitions. [2021-10-13 01:07:00,323 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 208 transitions. Word has length 89 [2021-10-13 01:07:00,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:00,324 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 208 transitions. [2021-10-13 01:07:00,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:00,324 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 208 transitions. [2021-10-13 01:07:00,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-13 01:07:00,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:00,325 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:00,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-10-13 01:07:00,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:00,539 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:00,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:00,540 INFO L82 PathProgramCache]: Analyzing trace with hash -271786181, now seen corresponding path program 13 times [2021-10-13 01:07:00,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:00,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980110902] [2021-10-13 01:07:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:00,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:00,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:00,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980110902] [2021-10-13 01:07:00,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980110902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:00,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497618776] [2021-10-13 01:07:00,785 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 01:07:00,785 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:00,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:00,786 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:00,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 01:07:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:01,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 01:07:01,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:02,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497618776] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:02,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:02,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-13 01:07:02,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662987224] [2021-10-13 01:07:02,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 01:07:02,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:02,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 01:07:02,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-10-13 01:07:02,266 INFO L87 Difference]: Start difference. First operand 187 states and 208 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:02,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:02,706 INFO L93 Difference]: Finished difference Result 292 states and 331 transitions. [2021-10-13 01:07:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 01:07:02,706 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 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 92 [2021-10-13 01:07:02,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:02,708 INFO L225 Difference]: With dead ends: 292 [2021-10-13 01:07:02,708 INFO L226 Difference]: Without dead ends: 189 [2021-10-13 01:07:02,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 79 SyntacticMatches, 13 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 335.7ms TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-10-13 01:07:02,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-10-13 01:07:02,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2021-10-13 01:07:02,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 168 states have (on average 1.2321428571428572) internal successors, (207), 186 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:02,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 207 transitions. [2021-10-13 01:07:02,720 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 207 transitions. Word has length 92 [2021-10-13 01:07:02,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:02,720 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 207 transitions. [2021-10-13 01:07:02,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:02,721 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 207 transitions. [2021-10-13 01:07:02,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-13 01:07:02,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:02,722 INFO L512 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:02,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-13 01:07:02,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-13 01:07:02,936 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:02,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:02,936 INFO L82 PathProgramCache]: Analyzing trace with hash 875215184, now seen corresponding path program 14 times [2021-10-13 01:07:02,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:02,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757559411] [2021-10-13 01:07:02,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:02,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:03,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:03,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757559411] [2021-10-13 01:07:03,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757559411] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:03,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683080475] [2021-10-13 01:07:03,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:07:03,166 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:03,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:03,172 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:03,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-13 01:07:03,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:07:03,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:07:03,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 01:07:03,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:04,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683080475] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:04,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:04,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 01:07:04,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134346642] [2021-10-13 01:07:04,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 01:07:04,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:04,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 01:07:04,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-13 01:07:04,252 INFO L87 Difference]: Start difference. First operand 187 states and 207 transitions. Second operand has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 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) [2021-10-13 01:07:04,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:04,427 INFO L93 Difference]: Finished difference Result 341 states and 384 transitions. [2021-10-13 01:07:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 01:07:04,428 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 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) Word has length 94 [2021-10-13 01:07:04,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:04,430 INFO L225 Difference]: With dead ends: 341 [2021-10-13 01:07:04,430 INFO L226 Difference]: Without dead ends: 243 [2021-10-13 01:07:04,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 162.3ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-13 01:07:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-10-13 01:07:04,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 192. [2021-10-13 01:07:04,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 173 states have (on average 1.23121387283237) internal successors, (213), 191 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 213 transitions. [2021-10-13 01:07:04,441 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 213 transitions. Word has length 94 [2021-10-13 01:07:04,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:04,442 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 213 transitions. [2021-10-13 01:07:04,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 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) [2021-10-13 01:07:04,442 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 213 transitions. [2021-10-13 01:07:04,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-13 01:07:04,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:04,443 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:04,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-13 01:07:04,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-13 01:07:04,664 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:04,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:04,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1564655266, now seen corresponding path program 14 times [2021-10-13 01:07:04,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:04,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4399256] [2021-10-13 01:07:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:04,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:04,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:04,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4399256] [2021-10-13 01:07:04,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4399256] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:04,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602099129] [2021-10-13 01:07:04,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:07:04,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:04,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:04,943 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:04,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 01:07:05,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:07:05,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:07:05,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-13 01:07:05,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:06,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602099129] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:06,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:06,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-13 01:07:06,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400122956] [2021-10-13 01:07:06,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 01:07:06,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:06,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 01:07:06,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-10-13 01:07:06,629 INFO L87 Difference]: Start difference. First operand 192 states and 213 transitions. Second operand has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:07,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:07,120 INFO L93 Difference]: Finished difference Result 297 states and 336 transitions. [2021-10-13 01:07:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 01:07:07,123 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-10-13 01:07:07,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:07,124 INFO L225 Difference]: With dead ends: 297 [2021-10-13 01:07:07,124 INFO L226 Difference]: Without dead ends: 194 [2021-10-13 01:07:07,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 83 SyntacticMatches, 14 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 372.6ms TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-10-13 01:07:07,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-13 01:07:07,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2021-10-13 01:07:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 173 states have (on average 1.2254335260115607) internal successors, (212), 191 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:07,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 212 transitions. [2021-10-13 01:07:07,135 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 212 transitions. Word has length 97 [2021-10-13 01:07:07,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:07,136 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 212 transitions. [2021-10-13 01:07:07,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2105263157894735) internal successors, (99), 19 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:07,136 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 212 transitions. [2021-10-13 01:07:07,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-13 01:07:07,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:07,137 INFO L512 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:07,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-13 01:07:07,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-13 01:07:07,344 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:07,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:07,344 INFO L82 PathProgramCache]: Analyzing trace with hash 463887095, now seen corresponding path program 15 times [2021-10-13 01:07:07,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:07,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951654984] [2021-10-13 01:07:07,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:07,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:07,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:07,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951654984] [2021-10-13 01:07:07,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951654984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:07,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194043162] [2021-10-13 01:07:07,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:07:07,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:07,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:07,556 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:07,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-13 01:07:08,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-10-13 01:07:08,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:07:08,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 01:07:08,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:08,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194043162] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:08,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:08,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 01:07:08,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564810148] [2021-10-13 01:07:08,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 01:07:08,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:08,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 01:07:08,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-13 01:07:08,877 INFO L87 Difference]: Start difference. First operand 192 states and 212 transitions. Second operand has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:09,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:09,002 INFO L93 Difference]: Finished difference Result 346 states and 389 transitions. [2021-10-13 01:07:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 01:07:09,006 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 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 99 [2021-10-13 01:07:09,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:09,008 INFO L225 Difference]: With dead ends: 346 [2021-10-13 01:07:09,008 INFO L226 Difference]: Without dead ends: 248 [2021-10-13 01:07:09,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 142.6ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-13 01:07:09,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-13 01:07:09,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 197. [2021-10-13 01:07:09,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 178 states have (on average 1.2247191011235956) internal successors, (218), 196 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 218 transitions. [2021-10-13 01:07:09,019 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 218 transitions. Word has length 99 [2021-10-13 01:07:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:09,019 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 218 transitions. [2021-10-13 01:07:09,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:09,020 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 218 transitions. [2021-10-13 01:07:09,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-13 01:07:09,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:09,021 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:09,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-13 01:07:09,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-13 01:07:09,228 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:09,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:09,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1231251355, now seen corresponding path program 15 times [2021-10-13 01:07:09,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:09,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810022136] [2021-10-13 01:07:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:09,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:09,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:09,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810022136] [2021-10-13 01:07:09,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810022136] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:09,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357954416] [2021-10-13 01:07:09,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:07:09,524 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:09,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:09,532 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:09,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-13 01:07:10,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-10-13 01:07:10,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:07:10,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 01:07:10,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:11,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357954416] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:11,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:11,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-13 01:07:11,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396236901] [2021-10-13 01:07:11,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 01:07:11,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:11,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 01:07:11,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-10-13 01:07:11,549 INFO L87 Difference]: Start difference. First operand 197 states and 218 transitions. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:11,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:11,992 INFO L93 Difference]: Finished difference Result 302 states and 341 transitions. [2021-10-13 01:07:11,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 01:07:11,993 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-13 01:07:11,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:11,995 INFO L225 Difference]: With dead ends: 302 [2021-10-13 01:07:11,995 INFO L226 Difference]: Without dead ends: 199 [2021-10-13 01:07:11,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 87 SyntacticMatches, 15 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 413.5ms TimeCoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-10-13 01:07:11,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-10-13 01:07:12,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2021-10-13 01:07:12,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 178 states have (on average 1.2191011235955056) internal successors, (217), 196 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:12,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 217 transitions. [2021-10-13 01:07:12,010 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 217 transitions. Word has length 102 [2021-10-13 01:07:12,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:12,011 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 217 transitions. [2021-10-13 01:07:12,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:12,011 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 217 transitions. [2021-10-13 01:07:12,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-13 01:07:12,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:12,013 INFO L512 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:12,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-13 01:07:12,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-10-13 01:07:12,222 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:12,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:12,222 INFO L82 PathProgramCache]: Analyzing trace with hash -2109691472, now seen corresponding path program 16 times [2021-10-13 01:07:12,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:12,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569687025] [2021-10-13 01:07:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:12,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:12,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:12,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569687025] [2021-10-13 01:07:12,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569687025] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:12,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921389773] [2021-10-13 01:07:12,516 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 01:07:12,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:12,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:12,524 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:12,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-13 01:07:13,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 01:07:13,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:07:13,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 01:07:13,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:14,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921389773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:14,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:14,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 01:07:14,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156630119] [2021-10-13 01:07:14,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 01:07:14,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:14,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 01:07:14,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-13 01:07:14,040 INFO L87 Difference]: Start difference. First operand 197 states and 217 transitions. Second operand has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:14,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:14,227 INFO L93 Difference]: Finished difference Result 351 states and 394 transitions. [2021-10-13 01:07:14,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 01:07:14,228 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-10-13 01:07:14,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:14,230 INFO L225 Difference]: With dead ends: 351 [2021-10-13 01:07:14,230 INFO L226 Difference]: Without dead ends: 253 [2021-10-13 01:07:14,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 204.4ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-13 01:07:14,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-10-13 01:07:14,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 202. [2021-10-13 01:07:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 183 states have (on average 1.2185792349726776) internal successors, (223), 201 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 223 transitions. [2021-10-13 01:07:14,244 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 223 transitions. Word has length 104 [2021-10-13 01:07:14,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:14,244 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 223 transitions. [2021-10-13 01:07:14,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:14,245 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 223 transitions. [2021-10-13 01:07:14,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-13 01:07:14,246 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:14,246 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:14,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-13 01:07:14,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-10-13 01:07:14,459 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:14,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:14,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1213362754, now seen corresponding path program 16 times [2021-10-13 01:07:14,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:14,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465671971] [2021-10-13 01:07:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:14,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:14,823 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:14,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:14,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465671971] [2021-10-13 01:07:14,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465671971] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:14,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883827504] [2021-10-13 01:07:14,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 01:07:14,824 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:14,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:14,826 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:14,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-13 01:07:15,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 01:07:15,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:07:15,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-13 01:07:15,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:16,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883827504] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:16,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:16,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-13 01:07:16,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181332814] [2021-10-13 01:07:16,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 01:07:16,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:16,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 01:07:16,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-10-13 01:07:16,804 INFO L87 Difference]: Start difference. First operand 202 states and 223 transitions. Second operand has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:17,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:17,332 INFO L93 Difference]: Finished difference Result 307 states and 346 transitions. [2021-10-13 01:07:17,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 01:07:17,333 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-10-13 01:07:17,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:17,334 INFO L225 Difference]: With dead ends: 307 [2021-10-13 01:07:17,334 INFO L226 Difference]: Without dead ends: 204 [2021-10-13 01:07:17,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 91 SyntacticMatches, 16 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 540.9ms TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-10-13 01:07:17,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-13 01:07:17,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2021-10-13 01:07:17,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 183 states have (on average 1.2131147540983607) internal successors, (222), 201 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 222 transitions. [2021-10-13 01:07:17,347 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 222 transitions. Word has length 107 [2021-10-13 01:07:17,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:17,348 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 222 transitions. [2021-10-13 01:07:17,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:17,348 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 222 transitions. [2021-10-13 01:07:17,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-13 01:07:17,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:17,349 INFO L512 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:17,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-13 01:07:17,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:17,576 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:17,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:17,576 INFO L82 PathProgramCache]: Analyzing trace with hash -2120767849, now seen corresponding path program 17 times [2021-10-13 01:07:17,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:17,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440445236] [2021-10-13 01:07:17,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:17,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:17,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:17,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440445236] [2021-10-13 01:07:17,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440445236] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:17,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154584248] [2021-10-13 01:07:17,870 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 01:07:17,870 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:17,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:17,871 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:17,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-13 01:07:18,964 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-10-13 01:07:18,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:07:18,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 01:07:18,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:19,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154584248] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:19,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:19,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 01:07:19,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398292768] [2021-10-13 01:07:19,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 01:07:19,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:19,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 01:07:19,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-13 01:07:19,247 INFO L87 Difference]: Start difference. First operand 202 states and 222 transitions. Second operand has 22 states, 22 states have (on average 5.2727272727272725) internal successors, (116), 22 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:19,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:19,382 INFO L93 Difference]: Finished difference Result 356 states and 399 transitions. [2021-10-13 01:07:19,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 01:07:19,392 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2727272727272725) internal successors, (116), 22 states have internal predecessors, (116), 0 states have call successors, (0), 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 109 [2021-10-13 01:07:19,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:19,394 INFO L225 Difference]: With dead ends: 356 [2021-10-13 01:07:19,394 INFO L226 Difference]: Without dead ends: 258 [2021-10-13 01:07:19,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 190.8ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-13 01:07:19,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-13 01:07:19,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 207. [2021-10-13 01:07:19,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 188 states have (on average 1.2127659574468086) internal successors, (228), 206 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 228 transitions. [2021-10-13 01:07:19,408 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 228 transitions. Word has length 109 [2021-10-13 01:07:19,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:19,408 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 228 transitions. [2021-10-13 01:07:19,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2727272727272725) internal successors, (116), 22 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:19,409 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 228 transitions. [2021-10-13 01:07:19,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-13 01:07:19,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:19,410 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:19,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-13 01:07:19,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:19,625 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:19,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:19,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1949497339, now seen corresponding path program 17 times [2021-10-13 01:07:19,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:19,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547236348] [2021-10-13 01:07:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:19,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:19,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:19,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547236348] [2021-10-13 01:07:19,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547236348] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:19,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762687060] [2021-10-13 01:07:19,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 01:07:19,990 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:19,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:19,990 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:19,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-13 01:07:21,150 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-10-13 01:07:21,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:07:21,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-13 01:07:21,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:22,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762687060] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:22,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:22,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-13 01:07:22,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141156265] [2021-10-13 01:07:22,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 01:07:22,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:22,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 01:07:22,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-10-13 01:07:22,237 INFO L87 Difference]: Start difference. First operand 207 states and 228 transitions. Second operand has 22 states, 22 states have (on average 5.181818181818182) internal successors, (114), 22 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:22,948 INFO L93 Difference]: Finished difference Result 312 states and 351 transitions. [2021-10-13 01:07:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 01:07:22,949 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.181818181818182) internal successors, (114), 22 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-10-13 01:07:22,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:22,951 INFO L225 Difference]: With dead ends: 312 [2021-10-13 01:07:22,951 INFO L226 Difference]: Without dead ends: 209 [2021-10-13 01:07:22,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 95 SyntacticMatches, 17 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 575.4ms TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-10-13 01:07:22,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-10-13 01:07:22,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 207. [2021-10-13 01:07:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 188 states have (on average 1.2074468085106382) internal successors, (227), 206 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:22,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 227 transitions. [2021-10-13 01:07:22,963 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 227 transitions. Word has length 112 [2021-10-13 01:07:22,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:22,964 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 227 transitions. [2021-10-13 01:07:22,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.181818181818182) internal successors, (114), 22 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:22,964 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 227 transitions. [2021-10-13 01:07:22,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-10-13 01:07:22,965 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:22,965 INFO L512 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:23,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-13 01:07:23,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:23,188 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:23,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:23,188 INFO L82 PathProgramCache]: Analyzing trace with hash 929931792, now seen corresponding path program 18 times [2021-10-13 01:07:23,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:23,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318623924] [2021-10-13 01:07:23,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:23,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:23,488 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:23,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:23,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318623924] [2021-10-13 01:07:23,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318623924] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:23,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506428208] [2021-10-13 01:07:23,489 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 01:07:23,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:23,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:23,489 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:23,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-13 01:07:25,507 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2021-10-13 01:07:25,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:07:25,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 01:07:25,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:25,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506428208] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:25,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:25,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 01:07:25,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284066169] [2021-10-13 01:07:25,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 01:07:25,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:25,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 01:07:25,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-13 01:07:25,849 INFO L87 Difference]: Start difference. First operand 207 states and 227 transitions. Second operand has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 23 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:26,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:26,026 INFO L93 Difference]: Finished difference Result 361 states and 404 transitions. [2021-10-13 01:07:26,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 01:07:26,027 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 23 states have internal predecessors, (121), 0 states have call successors, (0), 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 114 [2021-10-13 01:07:26,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:26,028 INFO L225 Difference]: With dead ends: 361 [2021-10-13 01:07:26,029 INFO L226 Difference]: Without dead ends: 263 [2021-10-13 01:07:26,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 207.3ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-13 01:07:26,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-10-13 01:07:26,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 212. [2021-10-13 01:07:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 193 states have (on average 1.2072538860103628) internal successors, (233), 211 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:26,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 233 transitions. [2021-10-13 01:07:26,042 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 233 transitions. Word has length 114 [2021-10-13 01:07:26,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:26,043 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 233 transitions. [2021-10-13 01:07:26,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 23 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 233 transitions. [2021-10-13 01:07:26,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-13 01:07:26,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:26,044 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:26,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-13 01:07:26,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:26,255 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:26,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:26,255 INFO L82 PathProgramCache]: Analyzing trace with hash -460448286, now seen corresponding path program 18 times [2021-10-13 01:07:26,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:26,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439630420] [2021-10-13 01:07:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:26,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:26,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:26,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439630420] [2021-10-13 01:07:26,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439630420] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:26,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774605513] [2021-10-13 01:07:26,673 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 01:07:26,674 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:26,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:26,678 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:26,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-13 01:07:28,881 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-13 01:07:28,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:07:28,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-13 01:07:28,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:30,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774605513] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:30,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:30,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-13 01:07:30,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484061527] [2021-10-13 01:07:30,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 01:07:30,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:30,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 01:07:30,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-10-13 01:07:30,088 INFO L87 Difference]: Start difference. First operand 212 states and 233 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:30,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:30,652 INFO L93 Difference]: Finished difference Result 317 states and 356 transitions. [2021-10-13 01:07:30,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 01:07:30,653 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 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 117 [2021-10-13 01:07:30,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:30,655 INFO L225 Difference]: With dead ends: 317 [2021-10-13 01:07:30,655 INFO L226 Difference]: Without dead ends: 214 [2021-10-13 01:07:30,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 99 SyntacticMatches, 18 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 659.8ms TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-10-13 01:07:30,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-13 01:07:30,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2021-10-13 01:07:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 193 states have (on average 1.2020725388601037) internal successors, (232), 211 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:30,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 232 transitions. [2021-10-13 01:07:30,669 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 232 transitions. Word has length 117 [2021-10-13 01:07:30,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:30,669 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 232 transitions. [2021-10-13 01:07:30,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:30,670 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 232 transitions. [2021-10-13 01:07:30,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-10-13 01:07:30,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:30,671 INFO L512 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:30,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-13 01:07:30,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-13 01:07:30,883 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:30,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:30,884 INFO L82 PathProgramCache]: Analyzing trace with hash -40441289, now seen corresponding path program 19 times [2021-10-13 01:07:30,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:30,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312257312] [2021-10-13 01:07:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:30,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:31,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:31,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312257312] [2021-10-13 01:07:31,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312257312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:31,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594598205] [2021-10-13 01:07:31,242 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 01:07:31,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:31,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:31,243 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:31,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-13 01:07:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:32,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 01:07:32,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:32,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594598205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:32,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:32,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 01:07:32,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587793390] [2021-10-13 01:07:32,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 01:07:32,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:32,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 01:07:32,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-13 01:07:32,874 INFO L87 Difference]: Start difference. First operand 212 states and 232 transitions. Second operand has 24 states, 24 states have (on average 5.25) internal successors, (126), 24 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:33,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:33,073 INFO L93 Difference]: Finished difference Result 366 states and 409 transitions. [2021-10-13 01:07:33,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 01:07:33,074 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.25) internal successors, (126), 24 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-10-13 01:07:33,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:33,075 INFO L225 Difference]: With dead ends: 366 [2021-10-13 01:07:33,075 INFO L226 Difference]: Without dead ends: 268 [2021-10-13 01:07:33,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 264.5ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-13 01:07:33,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-10-13 01:07:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 217. [2021-10-13 01:07:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 198 states have (on average 1.202020202020202) internal successors, (238), 216 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 238 transitions. [2021-10-13 01:07:33,087 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 238 transitions. Word has length 119 [2021-10-13 01:07:33,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:33,088 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 238 transitions. [2021-10-13 01:07:33,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.25) internal successors, (126), 24 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:33,088 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 238 transitions. [2021-10-13 01:07:33,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-13 01:07:33,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:33,090 INFO L512 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:33,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-13 01:07:33,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-13 01:07:33,304 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:33,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:33,304 INFO L82 PathProgramCache]: Analyzing trace with hash 579965019, now seen corresponding path program 19 times [2021-10-13 01:07:33,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:33,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657680323] [2021-10-13 01:07:33,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:33,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:33,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:33,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657680323] [2021-10-13 01:07:33,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657680323] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:33,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998132587] [2021-10-13 01:07:33,812 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 01:07:33,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:33,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:33,813 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:33,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-13 01:07:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:35,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 01:07:35,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:36,633 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:36,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998132587] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:36,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:36,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-13 01:07:36,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136999592] [2021-10-13 01:07:36,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 01:07:36,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:36,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 01:07:36,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-10-13 01:07:36,635 INFO L87 Difference]: Start difference. First operand 217 states and 238 transitions. Second operand has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 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) [2021-10-13 01:07:37,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:37,368 INFO L93 Difference]: Finished difference Result 322 states and 361 transitions. [2021-10-13 01:07:37,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 01:07:37,369 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 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) Word has length 122 [2021-10-13 01:07:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:37,370 INFO L225 Difference]: With dead ends: 322 [2021-10-13 01:07:37,370 INFO L226 Difference]: Without dead ends: 219 [2021-10-13 01:07:37,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 103 SyntacticMatches, 19 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 753.3ms TimeCoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-10-13 01:07:37,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-10-13 01:07:37,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2021-10-13 01:07:37,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 198 states have (on average 1.196969696969697) internal successors, (237), 216 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:37,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 237 transitions. [2021-10-13 01:07:37,384 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 237 transitions. Word has length 122 [2021-10-13 01:07:37,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:37,385 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 237 transitions. [2021-10-13 01:07:37,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 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) [2021-10-13 01:07:37,385 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 237 transitions. [2021-10-13 01:07:37,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-13 01:07:37,386 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:37,386 INFO L512 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:37,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-13 01:07:37,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-13 01:07:37,600 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:37,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:37,600 INFO L82 PathProgramCache]: Analyzing trace with hash -930635152, now seen corresponding path program 20 times [2021-10-13 01:07:37,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:37,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608172773] [2021-10-13 01:07:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:37,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:37,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:37,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:37,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608172773] [2021-10-13 01:07:37,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608172773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:37,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501636510] [2021-10-13 01:07:37,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:07:37,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:37,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:37,960 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:37,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-13 01:07:39,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:07:39,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:07:39,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 01:07:39,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:39,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501636510] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:39,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:39,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 01:07:39,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824552973] [2021-10-13 01:07:39,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 01:07:39,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:39,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 01:07:39,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-13 01:07:39,733 INFO L87 Difference]: Start difference. First operand 217 states and 237 transitions. Second operand has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:39,950 INFO L93 Difference]: Finished difference Result 371 states and 414 transitions. [2021-10-13 01:07:39,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 01:07:39,950 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 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 124 [2021-10-13 01:07:39,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:39,956 INFO L225 Difference]: With dead ends: 371 [2021-10-13 01:07:39,956 INFO L226 Difference]: Without dead ends: 273 [2021-10-13 01:07:39,958 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 248.3ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-13 01:07:39,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-10-13 01:07:39,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 222. [2021-10-13 01:07:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 203 states have (on average 1.1970443349753694) internal successors, (243), 221 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:39,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 243 transitions. [2021-10-13 01:07:39,976 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 243 transitions. Word has length 124 [2021-10-13 01:07:39,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:39,977 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 243 transitions. [2021-10-13 01:07:39,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:39,977 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 243 transitions. [2021-10-13 01:07:39,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-13 01:07:39,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:39,979 INFO L512 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:40,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-10-13 01:07:40,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-13 01:07:40,192 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:40,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:40,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2057322110, now seen corresponding path program 20 times [2021-10-13 01:07:40,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:40,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209482468] [2021-10-13 01:07:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:40,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 0 proven. 1050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:40,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:40,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209482468] [2021-10-13 01:07:40,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209482468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:40,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725034643] [2021-10-13 01:07:40,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:07:40,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:40,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:40,696 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:40,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-13 01:07:42,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:07:42,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:07:42,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 01:07:42,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:43,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 0 proven. 1050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:43,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725034643] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:43,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:43,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-13 01:07:43,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034306623] [2021-10-13 01:07:43,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 01:07:43,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:43,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 01:07:43,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2021-10-13 01:07:43,930 INFO L87 Difference]: Start difference. First operand 222 states and 243 transitions. Second operand has 25 states, 25 states have (on average 5.16) internal successors, (129), 25 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:44,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:44,754 INFO L93 Difference]: Finished difference Result 327 states and 366 transitions. [2021-10-13 01:07:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 01:07:44,755 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.16) internal successors, (129), 25 states have internal predecessors, (129), 0 states have call successors, (0), 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 127 [2021-10-13 01:07:44,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:44,757 INFO L225 Difference]: With dead ends: 327 [2021-10-13 01:07:44,757 INFO L226 Difference]: Without dead ends: 224 [2021-10-13 01:07:44,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 107 SyntacticMatches, 20 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 899.8ms TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2021-10-13 01:07:44,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-13 01:07:44,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2021-10-13 01:07:44,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 203 states have (on average 1.1921182266009853) internal successors, (242), 221 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:44,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 242 transitions. [2021-10-13 01:07:44,766 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 242 transitions. Word has length 127 [2021-10-13 01:07:44,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:44,766 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 242 transitions. [2021-10-13 01:07:44,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.16) internal successors, (129), 25 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:44,766 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 242 transitions. [2021-10-13 01:07:44,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-13 01:07:44,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:44,768 INFO L512 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:44,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-10-13 01:07:44,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-10-13 01:07:44,996 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:44,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:44,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1332861481, now seen corresponding path program 21 times [2021-10-13 01:07:44,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:44,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672908083] [2021-10-13 01:07:44,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:44,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:45,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:45,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672908083] [2021-10-13 01:07:45,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672908083] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:45,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122680894] [2021-10-13 01:07:45,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:07:45,393 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:45,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:45,394 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:45,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-13 01:07:51,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2021-10-13 01:07:51,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:07:51,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 01:07:51,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:51,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122680894] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:51,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:51,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-10-13 01:07:51,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738439047] [2021-10-13 01:07:51,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 01:07:51,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:51,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 01:07:51,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-13 01:07:51,671 INFO L87 Difference]: Start difference. First operand 222 states and 242 transitions. Second operand has 26 states, 26 states have (on average 5.230769230769231) internal successors, (136), 26 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:51,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:51,814 INFO L93 Difference]: Finished difference Result 376 states and 419 transitions. [2021-10-13 01:07:51,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 01:07:51,815 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.230769230769231) internal successors, (136), 26 states have internal predecessors, (136), 0 states have call successors, (0), 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 129 [2021-10-13 01:07:51,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:51,816 INFO L225 Difference]: With dead ends: 376 [2021-10-13 01:07:51,817 INFO L226 Difference]: Without dead ends: 278 [2021-10-13 01:07:51,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 274.4ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-13 01:07:51,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-13 01:07:51,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 227. [2021-10-13 01:07:51,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 208 states have (on average 1.1923076923076923) internal successors, (248), 226 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 248 transitions. [2021-10-13 01:07:51,831 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 248 transitions. Word has length 129 [2021-10-13 01:07:51,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:51,832 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 248 transitions. [2021-10-13 01:07:51,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.230769230769231) internal successors, (136), 26 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:51,832 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 248 transitions. [2021-10-13 01:07:51,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-13 01:07:51,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:51,833 INFO L512 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:51,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-13 01:07:52,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:52,046 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:52,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:52,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1823133509, now seen corresponding path program 21 times [2021-10-13 01:07:52,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:52,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441928521] [2021-10-13 01:07:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:52,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:52,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:52,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441928521] [2021-10-13 01:07:52,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441928521] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:52,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293739156] [2021-10-13 01:07:52,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:07:52,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:52,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:52,547 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:52,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-13 01:07:54,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-10-13 01:07:54,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:07:54,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 01:07:54,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:55,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:55,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293739156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:55,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:55,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-10-13 01:07:55,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499642556] [2021-10-13 01:07:55,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 01:07:55,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:55,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 01:07:55,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2021-10-13 01:07:55,941 INFO L87 Difference]: Start difference. First operand 227 states and 248 transitions. Second operand has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:56,652 INFO L93 Difference]: Finished difference Result 332 states and 371 transitions. [2021-10-13 01:07:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 01:07:56,653 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-10-13 01:07:56,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:56,654 INFO L225 Difference]: With dead ends: 332 [2021-10-13 01:07:56,655 INFO L226 Difference]: Without dead ends: 229 [2021-10-13 01:07:56,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 111 SyntacticMatches, 21 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 918.5ms TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2021-10-13 01:07:56,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-10-13 01:07:56,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2021-10-13 01:07:56,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 208 states have (on average 1.1875) internal successors, (247), 226 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:56,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 247 transitions. [2021-10-13 01:07:56,663 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 247 transitions. Word has length 132 [2021-10-13 01:07:56,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:56,663 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 247 transitions. [2021-10-13 01:07:56,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:56,664 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 247 transitions. [2021-10-13 01:07:56,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-10-13 01:07:56,664 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:56,665 INFO L512 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:56,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-13 01:07:56,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:56,876 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:56,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:56,876 INFO L82 PathProgramCache]: Analyzing trace with hash 384084688, now seen corresponding path program 22 times [2021-10-13 01:07:56,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:56,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496485954] [2021-10-13 01:07:56,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:56,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:07:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:57,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:07:57,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496485954] [2021-10-13 01:07:57,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496485954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:57,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471405574] [2021-10-13 01:07:57,322 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 01:07:57,322 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:07:57,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:07:57,324 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:07:57,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-13 01:07:58,952 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 01:07:58,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:07:58,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 01:07:58,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:07:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:07:59,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471405574] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:07:59,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:07:59,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-10-13 01:07:59,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803163903] [2021-10-13 01:07:59,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 01:07:59,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:07:59,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 01:07:59,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-13 01:07:59,364 INFO L87 Difference]: Start difference. First operand 227 states and 247 transitions. Second operand has 27 states, 27 states have (on average 5.222222222222222) internal successors, (141), 27 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:07:59,541 INFO L93 Difference]: Finished difference Result 381 states and 424 transitions. [2021-10-13 01:07:59,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 01:07:59,542 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.222222222222222) internal successors, (141), 27 states have internal predecessors, (141), 0 states have call successors, (0), 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 134 [2021-10-13 01:07:59,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:07:59,544 INFO L225 Difference]: With dead ends: 381 [2021-10-13 01:07:59,544 INFO L226 Difference]: Without dead ends: 283 [2021-10-13 01:07:59,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 304.5ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-13 01:07:59,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-10-13 01:07:59,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 232. [2021-10-13 01:07:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 213 states have (on average 1.187793427230047) internal successors, (253), 231 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 253 transitions. [2021-10-13 01:07:59,557 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 253 transitions. Word has length 134 [2021-10-13 01:07:59,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:07:59,558 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 253 transitions. [2021-10-13 01:07:59,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.222222222222222) internal successors, (141), 27 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:07:59,559 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 253 transitions. [2021-10-13 01:07:59,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-10-13 01:07:59,560 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:07:59,560 INFO L512 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:07:59,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-13 01:07:59,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-13 01:07:59,780 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:07:59,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:07:59,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1045340894, now seen corresponding path program 22 times [2021-10-13 01:07:59,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:07:59,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208467908] [2021-10-13 01:07:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:07:59,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:07:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:08:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:08:00,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:08:00,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208467908] [2021-10-13 01:08:00,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208467908] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:08:00,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049798082] [2021-10-13 01:08:00,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 01:08:00,386 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:08:00,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:08:00,388 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:08:00,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-13 01:08:02,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 01:08:02,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:08:02,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 01:08:02,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:08:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:08:03,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049798082] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:08:03,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:08:03,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-10-13 01:08:03,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189597896] [2021-10-13 01:08:03,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 01:08:03,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:08:03,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 01:08:03,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2021-10-13 01:08:03,829 INFO L87 Difference]: Start difference. First operand 232 states and 253 transitions. Second operand has 27 states, 27 states have (on average 5.148148148148148) internal successors, (139), 27 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:08:04,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:08:04,596 INFO L93 Difference]: Finished difference Result 337 states and 376 transitions. [2021-10-13 01:08:04,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 01:08:04,597 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.148148148148148) internal successors, (139), 27 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-10-13 01:08:04,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:08:04,598 INFO L225 Difference]: With dead ends: 337 [2021-10-13 01:08:04,598 INFO L226 Difference]: Without dead ends: 234 [2021-10-13 01:08:04,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 115 SyntacticMatches, 22 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1095.7ms TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2021-10-13 01:08:04,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-13 01:08:04,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 232. [2021-10-13 01:08:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 213 states have (on average 1.1830985915492958) internal successors, (252), 231 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:08:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 252 transitions. [2021-10-13 01:08:04,616 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 252 transitions. Word has length 137 [2021-10-13 01:08:04,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:08:04,616 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 252 transitions. [2021-10-13 01:08:04,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.148148148148148) internal successors, (139), 27 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:08:04,618 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 252 transitions. [2021-10-13 01:08:04,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-13 01:08:04,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:08:04,619 INFO L512 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:08:04,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-13 01:08:04,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-13 01:08:04,843 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:08:04,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:08:04,843 INFO L82 PathProgramCache]: Analyzing trace with hash 518478199, now seen corresponding path program 23 times [2021-10-13 01:08:04,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:08:04,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456487251] [2021-10-13 01:08:04,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:08:04,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:08:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:08:05,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:08:05,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:08:05,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456487251] [2021-10-13 01:08:05,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456487251] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:08:05,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659206665] [2021-10-13 01:08:05,301 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 01:08:05,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:08:05,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:08:05,306 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:08:05,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-13 01:08:07,073 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-10-13 01:08:07,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:08:07,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 01:08:07,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:08:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:08:07,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659206665] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:08:07,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:08:07,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-10-13 01:08:07,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208038261] [2021-10-13 01:08:07,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 01:08:07,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:08:07,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 01:08:07,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-13 01:08:07,465 INFO L87 Difference]: Start difference. First operand 232 states and 252 transitions. Second operand has 28 states, 28 states have (on average 5.214285714285714) internal successors, (146), 28 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:08:07,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:08:07,653 INFO L93 Difference]: Finished difference Result 386 states and 429 transitions. [2021-10-13 01:08:07,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 01:08:07,653 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.214285714285714) internal successors, (146), 28 states have internal predecessors, (146), 0 states have call successors, (0), 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 139 [2021-10-13 01:08:07,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:08:07,655 INFO L225 Difference]: With dead ends: 386 [2021-10-13 01:08:07,655 INFO L226 Difference]: Without dead ends: 288 [2021-10-13 01:08:07,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 300.7ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-13 01:08:07,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-13 01:08:07,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 237. [2021-10-13 01:08:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 218 states have (on average 1.18348623853211) internal successors, (258), 236 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:08:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 258 transitions. [2021-10-13 01:08:07,669 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 258 transitions. Word has length 139 [2021-10-13 01:08:07,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:08:07,670 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 258 transitions. [2021-10-13 01:08:07,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.214285714285714) internal successors, (146), 28 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:08:07,670 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 258 transitions. [2021-10-13 01:08:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-13 01:08:07,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:08:07,671 INFO L512 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:08:07,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-13 01:08:07,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-13 01:08:07,888 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2021-10-13 01:08:07,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:08:07,888 INFO L82 PathProgramCache]: Analyzing trace with hash -237774565, now seen corresponding path program 23 times [2021-10-13 01:08:07,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:08:07,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093023926] [2021-10-13 01:08:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:08:07,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:08:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:08:07,927 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:08:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:08:08,002 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:08:08,003 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:08:08,004 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,006 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,006 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,006 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,007 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,007 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,007 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:08:08,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-10-13 01:08:08,024 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:08:08,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:08:08 BoogieIcfgContainer [2021-10-13 01:08:08,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:08:08,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:08:08,158 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:08:08,158 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:08:08,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:06:25" (3/4) ... [2021-10-13 01:08:08,165 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 01:08:08,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:08:08,168 INFO L168 Benchmark]: Toolchain (without parser) took 103694.09 ms. Allocated memory was 98.6 MB in the beginning and 786.4 MB in the end (delta: 687.9 MB). Free memory was 67.0 MB in the beginning and 207.9 MB in the end (delta: -141.0 MB). Peak memory consumption was 548.8 MB. Max. memory is 16.1 GB. [2021-10-13 01:08:08,168 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:08:08,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.89 ms. Allocated memory is still 98.6 MB. Free memory was 66.8 MB in the beginning and 72.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:08:08,169 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.75 ms. Allocated memory is still 98.6 MB. Free memory was 71.7 MB in the beginning and 69.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:08:08,170 INFO L168 Benchmark]: Boogie Preprocessor took 34.89 ms. Allocated memory is still 98.6 MB. Free memory was 69.3 MB in the beginning and 67.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:08:08,170 INFO L168 Benchmark]: RCFGBuilder took 691.61 ms. Allocated memory was 98.6 MB in the beginning and 123.7 MB in the end (delta: 25.2 MB). Free memory was 67.5 MB in the beginning and 98.9 MB in the end (delta: -31.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:08:08,171 INFO L168 Benchmark]: TraceAbstraction took 102543.30 ms. Allocated memory was 123.7 MB in the beginning and 786.4 MB in the end (delta: 662.7 MB). Free memory was 98.3 MB in the beginning and 207.9 MB in the end (delta: -109.6 MB). Peak memory consumption was 554.9 MB. Max. memory is 16.1 GB. [2021-10-13 01:08:08,171 INFO L168 Benchmark]: Witness Printer took 7.81 ms. Allocated memory is still 786.4 MB. Free memory is still 207.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:08:08,174 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.89 ms. Allocated memory is still 98.6 MB. Free memory was 66.8 MB in the beginning and 72.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.75 ms. Allocated memory is still 98.6 MB. Free memory was 71.7 MB in the beginning and 69.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.89 ms. Allocated memory is still 98.6 MB. Free memory was 69.3 MB in the beginning and 67.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 691.61 ms. Allocated memory was 98.6 MB in the beginning and 123.7 MB in the end (delta: 25.2 MB). Free memory was 67.5 MB in the beginning and 98.9 MB in the end (delta: -31.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 102543.30 ms. Allocated memory was 123.7 MB in the beginning and 786.4 MB in the end (delta: 662.7 MB). Free memory was 98.3 MB in the beginning and 207.9 MB in the end (delta: -109.6 MB). Peak memory consumption was 554.9 MB. Max. memory is 16.1 GB. * Witness Printer took 7.81 ms. Allocated memory is still 786.4 MB. Free memory is still 207.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 69, overapproximation of bitwiseAnd at line 68. Possible FailurePath: [L213] unsigned int a ; [L214] unsigned int ma = __VERIFIER_nondet_uint(); [L215] signed char ea = __VERIFIER_nondet_char(); [L216] unsigned int b ; [L217] unsigned int mb = __VERIFIER_nondet_uint(); [L218] signed char eb = __VERIFIER_nondet_char(); [L219] unsigned int r_mul ; [L220] unsigned int zero ; [L221] unsigned int one ; [L222] int sa ; [L223] int tmp ; [L224] int tmp___0 ; [L225] int tmp___1 ; [L226] int __retres16 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L230] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND FALSE !(m < 1U << 24U) [L68] m = m & ~ (1U << 24U) [L69] EXPR e + 128 [L69] EXPR (e + 128) << 24U [L69] res = m | (unsigned int )((e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L231] one = base2flt(1, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] EXPR e + 128 [L69] (e + 128) << 24U - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 37]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 164]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 164]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 167]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 167]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 169]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 169]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 170]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 170]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 193]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 193]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 206]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 163 locations, 46 error locations. Started 1 CEGAR loops. OverallTime: 102335.5ms, OverallIterations: 57, TraceHistogramMax: 25, EmptinessCheckTime: 67.7ms, AutomataDifference: 13945.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8543 SDtfs, 6678 SDslu, 35807 SDs, 0 SdLazy, 19627 SolverSat, 1029 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9564.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4492 GetRequests, 3555 SyntacticMatches, 253 SemanticMatches, 684 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 11451.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=56, InterpolantAutomatonStates: 793, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 675.7ms AutomataMinimizationTime, 56 MinimizatonAttempts, 1552 StatesRemovedByMinimization, 53 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 485.4ms SsaConstructionTime, 13337.8ms SatisfiabilityAnalysisTime, 32635.4ms InterpolantComputationTime, 7905 NumberOfCodeBlocks, 7905 NumberOfCodeBlocksAsserted, 386 NumberOfCheckSat, 7662 ConstructedInterpolants, 0 QuantifiedInterpolants, 36376 SizeOfPredicates, 67 NumberOfNonLiveVariables, 9417 ConjunctsInSsa, 1032 ConjunctsInUnsatCore, 101 InterpolantComputations, 11 PerfectInterpolantSequences, 5/44441 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 01:08:08,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec681206-8372-433c-b2d3-04445cd032d1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...