./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark03_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark03_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU --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 36118893e72f01ac34f08ae30ac9eb83d0074096398f7228653cb15beb7a3f4b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:11:27,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:11:27,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:11:27,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:11:27,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:11:27,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:11:27,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:11:27,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:11:27,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:11:27,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:11:27,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:11:27,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:11:27,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:11:27,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:11:27,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:11:27,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:11:27,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:11:27,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:11:27,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:11:27,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:11:27,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:11:27,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:11:27,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:11:27,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:11:27,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:11:27,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:11:27,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:11:27,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:11:27,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:11:27,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:11:27,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:11:27,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:11:27,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:11:27,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:11:27,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:11:27,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:11:27,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:11:27,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:11:27,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:11:27,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:11:27,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:11:27,199 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-02 23:11:27,229 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:11:27,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:11:27,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:11:27,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:11:27,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:11:27,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:11:27,232 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:11:27,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:11:27,233 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:11:27,233 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 23:11:27,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:11:27,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:11:27,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:11:27,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:11:27,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:11:27,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:11:27,236 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-02 23:11:27,236 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:11:27,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:11:27,236 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:11:27,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:11:27,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:11:27,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:11:27,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:11:27,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:11:27,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:11:27,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:11:27,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:11:27,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:11:27,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:11:27,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:11:27,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:11:27,239 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_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36118893e72f01ac34f08ae30ac9eb83d0074096398f7228653cb15beb7a3f4b [2021-11-02 23:11:27,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:11:27,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:11:27,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:11:27,515 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:11:27,516 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:11:27,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/loop-zilu/benchmark03_linear.i [2021-11-02 23:11:27,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/data/70564a88b/b68637cd6a1448b291d9422e301fceeb/FLAG6a14c7c87 [2021-11-02 23:11:28,085 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:11:28,085 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/sv-benchmarks/c/loop-zilu/benchmark03_linear.i [2021-11-02 23:11:28,091 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/data/70564a88b/b68637cd6a1448b291d9422e301fceeb/FLAG6a14c7c87 [2021-11-02 23:11:28,463 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/data/70564a88b/b68637cd6a1448b291d9422e301fceeb [2021-11-02 23:11:28,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:11:28,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:11:28,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:11:28,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:11:28,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:11:28,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:11:28" (1/1) ... [2021-11-02 23:11:28,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543038cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:28, skipping insertion in model container [2021-11-02 23:11:28,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:11:28" (1/1) ... [2021-11-02 23:11:28,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:11:28,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:11:28,645 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_a443441e-1242-4e9a-8ee3-6573ce636a85/sv-benchmarks/c/loop-zilu/benchmark03_linear.i[868,881] [2021-11-02 23:11:28,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:11:28,665 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:11:28,678 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_a443441e-1242-4e9a-8ee3-6573ce636a85/sv-benchmarks/c/loop-zilu/benchmark03_linear.i[868,881] [2021-11-02 23:11:28,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:11:28,696 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:11:28,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:28 WrapperNode [2021-11-02 23:11:28,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:11:28,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:11:28,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:11:28,699 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:11:28,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:28" (1/1) ... [2021-11-02 23:11:28,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:28" (1/1) ... [2021-11-02 23:11:28,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:11:28,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:11:28,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:11:28,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:11:28,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:28" (1/1) ... [2021-11-02 23:11:28,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:28" (1/1) ... [2021-11-02 23:11:28,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:28" (1/1) ... [2021-11-02 23:11:28,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:28" (1/1) ... [2021-11-02 23:11:28,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:28" (1/1) ... [2021-11-02 23:11:28,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:28" (1/1) ... [2021-11-02 23:11:28,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:28" (1/1) ... [2021-11-02 23:11:28,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:11:28,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:11:28,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:11:28,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:11:28,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:28" (1/1) ... [2021-11-02 23:11:28,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:11:28,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:28,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:11:28,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:11:28,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:11:28,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:11:28,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:11:28,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:11:29,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:11:29,158 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-02 23:11:29,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:11:29 BoogieIcfgContainer [2021-11-02 23:11:29,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:11:29,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:11:29,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:11:29,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:11:29,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:11:28" (1/3) ... [2021-11-02 23:11:29,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab75bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:11:29, skipping insertion in model container [2021-11-02 23:11:29,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:11:28" (2/3) ... [2021-11-02 23:11:29,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab75bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:11:29, skipping insertion in model container [2021-11-02 23:11:29,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:11:29" (3/3) ... [2021-11-02 23:11:29,181 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark03_linear.i [2021-11-02 23:11:29,186 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:11:29,187 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-02 23:11:29,257 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:11:29,264 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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 [2021-11-02 23:11:29,264 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-02 23:11:29,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.75) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:29,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-02 23:11:29,285 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:29,286 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-02 23:11:29,286 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:29,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:29,291 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-11-02 23:11:29,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:29,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419123196] [2021-11-02 23:11:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:29,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:29,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:29,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:29,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419123196] [2021-11-02 23:11:29,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419123196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:29,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:11:29,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:11:29,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843291258] [2021-11-02 23:11:29,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:11:29,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:29,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:11:29,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:11:29,597 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.75) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:29,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:29,682 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2021-11-02 23:11:29,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:11:29,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-11-02 23:11:29,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:29,692 INFO L225 Difference]: With dead ends: 48 [2021-11-02 23:11:29,692 INFO L226 Difference]: Without dead ends: 28 [2021-11-02 23:11:29,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:11:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-02 23:11:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-02 23:11:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-11-02 23:11:29,735 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 5 [2021-11-02 23:11:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:29,737 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-11-02 23:11:29,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:29,738 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-11-02 23:11:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 23:11:29,738 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:29,739 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:29,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:11:29,740 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:29,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:29,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-11-02 23:11:29,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:29,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879118098] [2021-11-02 23:11:29,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:29,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:29,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:29,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:29,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879118098] [2021-11-02 23:11:29,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879118098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:29,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:11:29,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:11:29,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80163441] [2021-11-02 23:11:29,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:11:29,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:29,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:11:29,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:11:29,825 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-11-02 23:11:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:29,854 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-11-02 23:11:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:11:29,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2021-11-02 23:11:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:29,856 INFO L225 Difference]: With dead ends: 32 [2021-11-02 23:11:29,856 INFO L226 Difference]: Without dead ends: 30 [2021-11-02 23:11:29,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:11:29,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-02 23:11:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-02 23:11:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.55) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:29,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-11-02 23:11:29,861 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 7 [2021-11-02 23:11:29,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:29,862 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-11-02 23:11:29,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-11-02 23:11:29,862 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-11-02 23:11:29,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 23:11:29,863 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:29,863 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:29,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:11:29,864 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:29,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:29,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1387005865, now seen corresponding path program 1 times [2021-11-02 23:11:29,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:29,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015860743] [2021-11-02 23:11:29,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:29,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:29,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:29,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:29,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015860743] [2021-11-02 23:11:29,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015860743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:29,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:11:29,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:11:29,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322617292] [2021-11-02 23:11:29,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:11:29,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:29,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:11:29,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:11:29,952 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:29,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:29,993 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2021-11-02 23:11:29,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:11:29,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-02 23:11:29,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:29,995 INFO L225 Difference]: With dead ends: 33 [2021-11-02 23:11:29,995 INFO L226 Difference]: Without dead ends: 32 [2021-11-02 23:11:29,995 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:11:29,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-02 23:11:29,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-11-02 23:11:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:30,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-11-02 23:11:30,000 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 9 [2021-11-02 23:11:30,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:30,000 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-11-02 23:11:30,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:30,001 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-11-02 23:11:30,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 23:11:30,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:30,001 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:30,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 23:11:30,002 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:30,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:30,003 INFO L85 PathProgramCache]: Analyzing trace with hash 47508913, now seen corresponding path program 1 times [2021-11-02 23:11:30,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:30,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131895999] [2021-11-02 23:11:30,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:30,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:30,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:30,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131895999] [2021-11-02 23:11:30,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131895999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:30,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:11:30,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:11:30,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186456497] [2021-11-02 23:11:30,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:11:30,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:30,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:11:30,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:11:30,078 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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) [2021-11-02 23:11:30,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:30,119 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-11-02 23:11:30,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:11:30,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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 [2021-11-02 23:11:30,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:30,121 INFO L225 Difference]: With dead ends: 33 [2021-11-02 23:11:30,121 INFO L226 Difference]: Without dead ends: 32 [2021-11-02 23:11:30,121 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:11:30,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-02 23:11:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-02 23:11:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.5) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:30,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-11-02 23:11:30,126 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 10 [2021-11-02 23:11:30,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:30,126 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-11-02 23:11:30,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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) [2021-11-02 23:11:30,127 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-11-02 23:11:30,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-02 23:11:30,127 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:30,127 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:30,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 23:11:30,128 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:30,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:30,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1472776363, now seen corresponding path program 1 times [2021-11-02 23:11:30,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:30,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771112872] [2021-11-02 23:11:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:30,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:30,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:30,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771112872] [2021-11-02 23:11:30,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771112872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:30,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:11:30,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:11:30,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830997515] [2021-11-02 23:11:30,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:11:30,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:30,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:11:30,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:11:30,209 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:30,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:30,267 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-11-02 23:11:30,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:11:30,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-02 23:11:30,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:30,271 INFO L225 Difference]: With dead ends: 35 [2021-11-02 23:11:30,271 INFO L226 Difference]: Without dead ends: 34 [2021-11-02 23:11:30,272 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:11:30,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-02 23:11:30,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-11-02 23:11:30,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 32 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) [2021-11-02 23:11:30,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-11-02 23:11:30,283 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 11 [2021-11-02 23:11:30,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:30,284 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-11-02 23:11:30,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:30,284 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-11-02 23:11:30,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 23:11:30,285 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:30,285 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:30,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 23:11:30,287 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:30,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:30,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1588572941, now seen corresponding path program 1 times [2021-11-02 23:11:30,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:30,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938898124] [2021-11-02 23:11:30,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:30,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:30,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:30,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938898124] [2021-11-02 23:11:30,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938898124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:30,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:11:30,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:11:30,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386788475] [2021-11-02 23:11:30,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:11:30,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:30,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:11:30,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:11:30,417 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:30,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:30,462 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2021-11-02 23:11:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:11:30,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-11-02 23:11:30,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:30,463 INFO L225 Difference]: With dead ends: 35 [2021-11-02 23:11:30,463 INFO L226 Difference]: Without dead ends: 34 [2021-11-02 23:11:30,464 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:11:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-02 23:11:30,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-02 23:11:30,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:30,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-11-02 23:11:30,468 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 12 [2021-11-02 23:11:30,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:30,468 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-11-02 23:11:30,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:30,468 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-11-02 23:11:30,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-02 23:11:30,469 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:30,469 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:30,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 23:11:30,469 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:30,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:30,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1905204139, now seen corresponding path program 1 times [2021-11-02 23:11:30,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:30,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518930729] [2021-11-02 23:11:30,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:30,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:30,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:30,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518930729] [2021-11-02 23:11:30,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518930729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:30,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:11:30,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 23:11:30,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33594107] [2021-11-02 23:11:30,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 23:11:30,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:30,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 23:11:30,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:11:30,548 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:30,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:30,625 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2021-11-02 23:11:30,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 23:11:30,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-02 23:11:30,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:30,630 INFO L225 Difference]: With dead ends: 55 [2021-11-02 23:11:30,630 INFO L226 Difference]: Without dead ends: 54 [2021-11-02 23:11:30,631 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-02 23:11:30,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-02 23:11:30,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 36. [2021-11-02 23:11:30,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-11-02 23:11:30,639 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 14 [2021-11-02 23:11:30,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:30,640 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-11-02 23:11:30,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:30,641 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-11-02 23:11:30,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 23:11:30,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:30,642 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:30,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 23:11:30,643 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:30,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:30,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1068213904, now seen corresponding path program 1 times [2021-11-02 23:11:30,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:30,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647856051] [2021-11-02 23:11:30,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:30,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:30,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:30,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647856051] [2021-11-02 23:11:30,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647856051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:30,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:11:30,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 23:11:30,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738742395] [2021-11-02 23:11:30,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 23:11:30,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 23:11:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:11:30,759 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 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) [2021-11-02 23:11:30,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:30,847 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2021-11-02 23:11:30,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 23:11:30,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 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 [2021-11-02 23:11:30,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:30,850 INFO L225 Difference]: With dead ends: 55 [2021-11-02 23:11:30,851 INFO L226 Difference]: Without dead ends: 54 [2021-11-02 23:11:30,851 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 23:11:30,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-02 23:11:30,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2021-11-02 23:11:30,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:30,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-11-02 23:11:30,868 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 15 [2021-11-02 23:11:30,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:30,868 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-11-02 23:11:30,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 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) [2021-11-02 23:11:30,869 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-11-02 23:11:30,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 23:11:30,869 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:30,869 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:30,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 23:11:30,870 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:30,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:30,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1068218998, now seen corresponding path program 1 times [2021-11-02 23:11:30,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:30,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353528422] [2021-11-02 23:11:30,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:30,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:30,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:30,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:30,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353528422] [2021-11-02 23:11:30,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353528422] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:30,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408445050] [2021-11-02 23:11:30,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:30,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:30,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:30,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:30,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 23:11:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:30,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 23:11:30,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:31,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408445050] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:31,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:31,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-02 23:11:31,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058227780] [2021-11-02 23:11:31,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 23:11:31,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:31,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 23:11:31,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:11:31,085 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:31,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:31,131 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-11-02 23:11:31,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 23:11:31,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-02 23:11:31,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:31,132 INFO L225 Difference]: With dead ends: 42 [2021-11-02 23:11:31,132 INFO L226 Difference]: Without dead ends: 41 [2021-11-02 23:11:31,133 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-02 23:11:31,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-02 23:11:31,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-11-02 23:11:31,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:31,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-11-02 23:11:31,136 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 15 [2021-11-02 23:11:31,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:31,136 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-11-02 23:11:31,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-11-02 23:11:31,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-02 23:11:31,137 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:31,137 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:31,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:31,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-02 23:11:31,354 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:31,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:31,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1244949380, now seen corresponding path program 1 times [2021-11-02 23:11:31,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:31,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179885610] [2021-11-02 23:11:31,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:31,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:31,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:31,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179885610] [2021-11-02 23:11:31,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179885610] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:31,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017960585] [2021-11-02 23:11:31,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:31,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:31,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:31,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:31,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 23:11:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:31,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 23:11:31,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:31,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:31,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017960585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:31,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 23:11:31,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-02 23:11:31,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479444120] [2021-11-02 23:11:31,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:11:31,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:31,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:11:31,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:11:31,636 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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) [2021-11-02 23:11:31,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:31,688 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-11-02 23:11:31,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:11:31,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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 [2021-11-02 23:11:31,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:31,689 INFO L225 Difference]: With dead ends: 39 [2021-11-02 23:11:31,689 INFO L226 Difference]: Without dead ends: 38 [2021-11-02 23:11:31,690 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 23:11:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-02 23:11:31,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-11-02 23:11:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-11-02 23:11:31,697 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 16 [2021-11-02 23:11:31,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:31,698 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-11-02 23:11:31,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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) [2021-11-02 23:11:31,698 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-11-02 23:11:31,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 23:11:31,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:31,699 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:31,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:31,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 23:11:31,913 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:31,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:31,913 INFO L85 PathProgramCache]: Analyzing trace with hash 61274936, now seen corresponding path program 1 times [2021-11-02 23:11:31,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:31,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113511706] [2021-11-02 23:11:31,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:31,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:31,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:31,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:31,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113511706] [2021-11-02 23:11:31,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113511706] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:31,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342334735] [2021-11-02 23:11:31,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:31,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:31,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:31,970 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:31,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 23:11:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:32,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 23:11:32,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:32,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342334735] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:32,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:32,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-02 23:11:32,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726533833] [2021-11-02 23:11:32,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 23:11:32,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:32,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 23:11:32,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:11:32,132 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:32,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:32,193 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2021-11-02 23:11:32,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 23:11:32,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-02 23:11:32,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:32,195 INFO L225 Difference]: With dead ends: 43 [2021-11-02 23:11:32,195 INFO L226 Difference]: Without dead ends: 42 [2021-11-02 23:11:32,196 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-02 23:11:32,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-02 23:11:32,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-11-02 23:11:32,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-11-02 23:11:32,202 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 17 [2021-11-02 23:11:32,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:32,205 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-11-02 23:11:32,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:32,205 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-11-02 23:11:32,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 23:11:32,206 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:32,206 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:32,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-02 23:11:32,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:32,424 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:32,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:32,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1899523070, now seen corresponding path program 1 times [2021-11-02 23:11:32,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:32,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363922608] [2021-11-02 23:11:32,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:32,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:32,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:32,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:32,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363922608] [2021-11-02 23:11:32,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363922608] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:32,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976014259] [2021-11-02 23:11:32,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:32,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:32,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:32,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:32,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 23:11:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:32,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 23:11:32,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:32,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976014259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:32,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 23:11:32,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-02 23:11:32,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322759956] [2021-11-02 23:11:32,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:11:32,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:32,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:11:32,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:11:32,612 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:32,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:32,645 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-11-02 23:11:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:11:32,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-02 23:11:32,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:32,647 INFO L225 Difference]: With dead ends: 40 [2021-11-02 23:11:32,647 INFO L226 Difference]: Without dead ends: 39 [2021-11-02 23:11:32,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 23:11:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-02 23:11:32,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-02 23:11:32,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-11-02 23:11:32,658 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 18 [2021-11-02 23:11:32,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:32,659 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-11-02 23:11:32,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:32,659 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-11-02 23:11:32,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-02 23:11:32,660 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:32,660 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:32,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:32,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:32,886 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:32,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:32,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1244326918, now seen corresponding path program 1 times [2021-11-02 23:11:32,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:32,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962947425] [2021-11-02 23:11:32,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:32,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:32,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:32,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962947425] [2021-11-02 23:11:32,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962947425] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:32,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849772604] [2021-11-02 23:11:33,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:33,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:33,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:33,002 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:33,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 23:11:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:33,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 23:11:33,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:33,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849772604] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:33,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:33,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-11-02 23:11:33,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553657631] [2021-11-02 23:11:33,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 23:11:33,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:33,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 23:11:33,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-02 23:11:33,316 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:33,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:33,420 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2021-11-02 23:11:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 23:11:33,421 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-02 23:11:33,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:33,422 INFO L225 Difference]: With dead ends: 44 [2021-11-02 23:11:33,422 INFO L226 Difference]: Without dead ends: 43 [2021-11-02 23:11:33,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-11-02 23:11:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-02 23:11:33,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2021-11-02 23:11:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.303030303030303) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-11-02 23:11:33,425 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 19 [2021-11-02 23:11:33,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:33,425 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-11-02 23:11:33,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-11-02 23:11:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-02 23:11:33,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:33,426 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:33,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:33,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:33,650 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:33,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:33,650 INFO L85 PathProgramCache]: Analyzing trace with hash 80571264, now seen corresponding path program 1 times [2021-11-02 23:11:33,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:33,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881507883] [2021-11-02 23:11:33,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:33,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:33,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:33,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881507883] [2021-11-02 23:11:33,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881507883] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:33,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178987199] [2021-11-02 23:11:33,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:33,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:33,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:33,752 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:33,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 23:11:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:33,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 23:11:33,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:34,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:34,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178987199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:34,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 23:11:34,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2021-11-02 23:11:34,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535183985] [2021-11-02 23:11:34,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 23:11:34,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:34,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 23:11:34,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-11-02 23:11:34,070 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:34,167 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-11-02 23:11:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 23:11:34,167 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-02 23:11:34,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:34,167 INFO L225 Difference]: With dead ends: 41 [2021-11-02 23:11:34,168 INFO L226 Difference]: Without dead ends: 40 [2021-11-02 23:11:34,168 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2021-11-02 23:11:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-02 23:11:34,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-02 23:11:34,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-11-02 23:11:34,170 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 20 [2021-11-02 23:11:34,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:34,170 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-11-02 23:11:34,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-11-02 23:11:34,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-02 23:11:34,171 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:34,171 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:34,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:34,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-02 23:11:34,372 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:34,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:34,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1797258052, now seen corresponding path program 1 times [2021-11-02 23:11:34,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:34,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374638064] [2021-11-02 23:11:34,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:34,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:34,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:34,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374638064] [2021-11-02 23:11:34,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374638064] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:34,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159938058] [2021-11-02 23:11:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:34,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:34,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:34,456 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:34,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 23:11:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:34,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 23:11:34,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:34,734 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:34,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159938058] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:34,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:34,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-11-02 23:11:34,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286528626] [2021-11-02 23:11:34,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 23:11:34,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:34,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 23:11:34,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-02 23:11:34,738 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 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) [2021-11-02 23:11:34,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:34,849 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2021-11-02 23:11:34,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 23:11:34,850 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 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 21 [2021-11-02 23:11:34,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:34,852 INFO L225 Difference]: With dead ends: 51 [2021-11-02 23:11:34,852 INFO L226 Difference]: Without dead ends: 50 [2021-11-02 23:11:34,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-11-02 23:11:34,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-02 23:11:34,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-11-02 23:11:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 47 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2021-11-02 23:11:34,865 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 21 [2021-11-02 23:11:34,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:34,865 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2021-11-02 23:11:34,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 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) [2021-11-02 23:11:34,866 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2021-11-02 23:11:34,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 23:11:34,870 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:34,871 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:34,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:35,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-02 23:11:35,086 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:35,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:35,086 INFO L85 PathProgramCache]: Analyzing trace with hash 119575298, now seen corresponding path program 1 times [2021-11-02 23:11:35,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:35,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260722155] [2021-11-02 23:11:35,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:35,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:35,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:35,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260722155] [2021-11-02 23:11:35,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260722155] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:35,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286745608] [2021-11-02 23:11:35,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:35,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:35,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:35,176 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:35,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 23:11:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:35,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 23:11:35,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:35,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286745608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:35,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 23:11:35,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2021-11-02 23:11:35,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154754260] [2021-11-02 23:11:35,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 23:11:35,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:35,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 23:11:35,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-11-02 23:11:35,487 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:35,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:35,586 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2021-11-02 23:11:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 23:11:35,587 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-02 23:11:35,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:35,588 INFO L225 Difference]: With dead ends: 48 [2021-11-02 23:11:35,588 INFO L226 Difference]: Without dead ends: 46 [2021-11-02 23:11:35,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2021-11-02 23:11:35,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-02 23:11:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-02 23:11:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.170731707317073) internal successors, (48), 45 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:35,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2021-11-02 23:11:35,591 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 22 [2021-11-02 23:11:35,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:35,592 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2021-11-02 23:11:35,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:35,592 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2021-11-02 23:11:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-02 23:11:35,593 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:35,593 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:35,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-02 23:11:35,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 23:11:35,806 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:35,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:35,807 INFO L85 PathProgramCache]: Analyzing trace with hash 420330904, now seen corresponding path program 1 times [2021-11-02 23:11:35,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:35,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927576266] [2021-11-02 23:11:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:35,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:35,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:35,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:35,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927576266] [2021-11-02 23:11:35,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927576266] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:35,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47523145] [2021-11-02 23:11:35,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:35,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:35,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:35,890 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:35,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 23:11:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:36,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 23:11:36,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:36,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47523145] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:36,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:36,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-11-02 23:11:36,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788677862] [2021-11-02 23:11:36,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 23:11:36,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:36,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 23:11:36,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-11-02 23:11:36,319 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:36,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:36,500 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2021-11-02 23:11:36,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 23:11:36,501 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-02 23:11:36,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:36,502 INFO L225 Difference]: With dead ends: 51 [2021-11-02 23:11:36,502 INFO L226 Difference]: Without dead ends: 50 [2021-11-02 23:11:36,503 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2021-11-02 23:11:36,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-02 23:11:36,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 40. [2021-11-02 23:11:36,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-11-02 23:11:36,505 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 23 [2021-11-02 23:11:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:36,505 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-11-02 23:11:36,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:36,506 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-11-02 23:11:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 23:11:36,506 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:36,506 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:36,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:36,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-02 23:11:36,707 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:36,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:36,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1052253532, now seen corresponding path program 1 times [2021-11-02 23:11:36,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:36,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30153430] [2021-11-02 23:11:36,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:36,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:36,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:36,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30153430] [2021-11-02 23:11:36,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30153430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:36,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:11:36,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:11:36,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840395464] [2021-11-02 23:11:36,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:11:36,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:36,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:11:36,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:11:36,750 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:36,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:36,760 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2021-11-02 23:11:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:11:36,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-02 23:11:36,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:36,761 INFO L225 Difference]: With dead ends: 79 [2021-11-02 23:11:36,761 INFO L226 Difference]: Without dead ends: 62 [2021-11-02 23:11:36,762 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:11:36,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-02 23:11:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2021-11-02 23:11:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 57 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) [2021-11-02 23:11:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2021-11-02 23:11:36,768 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 24 [2021-11-02 23:11:36,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:36,769 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2021-11-02 23:11:36,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:36,770 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2021-11-02 23:11:36,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-02 23:11:36,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:36,773 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-02 23:11:36,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 23:11:36,773 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:36,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:36,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1739884039, now seen corresponding path program 2 times [2021-11-02 23:11:36,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:36,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593258596] [2021-11-02 23:11:36,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:36,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:36,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:36,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593258596] [2021-11-02 23:11:36,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593258596] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:36,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219140025] [2021-11-02 23:11:36,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:11:36,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:36,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:36,858 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:36,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 23:11:37,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:11:37,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:37,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 23:11:37,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:37,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219140025] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:37,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:37,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-02 23:11:37,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527529208] [2021-11-02 23:11:37,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 23:11:37,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:37,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 23:11:37,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-02 23:11:37,079 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:37,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:37,124 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2021-11-02 23:11:37,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 23:11:37,125 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-02 23:11:37,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:37,126 INFO L225 Difference]: With dead ends: 72 [2021-11-02 23:11:37,126 INFO L226 Difference]: Without dead ends: 71 [2021-11-02 23:11:37,127 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-02 23:11:37,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-02 23:11:37,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2021-11-02 23:11:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 67 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) [2021-11-02 23:11:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-11-02 23:11:37,131 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 25 [2021-11-02 23:11:37,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:37,131 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-11-02 23:11:37,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:37,132 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-11-02 23:11:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-02 23:11:37,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:37,132 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:37,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:37,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:37,358 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:37,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:37,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2046612408, now seen corresponding path program 1 times [2021-11-02 23:11:37,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:37,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268417490] [2021-11-02 23:11:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:37,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:37,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:37,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268417490] [2021-11-02 23:11:37,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268417490] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:37,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607420744] [2021-11-02 23:11:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:37,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:37,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:37,451 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:37,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-02 23:11:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:37,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 23:11:37,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:37,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607420744] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:37,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:37,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-02 23:11:37,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72594373] [2021-11-02 23:11:37,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 23:11:37,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:37,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 23:11:37,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-11-02 23:11:37,876 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 19 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 19 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) [2021-11-02 23:11:38,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:38,027 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2021-11-02 23:11:38,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 23:11:38,029 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 19 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 26 [2021-11-02 23:11:38,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:38,029 INFO L225 Difference]: With dead ends: 79 [2021-11-02 23:11:38,029 INFO L226 Difference]: Without dead ends: 78 [2021-11-02 23:11:38,030 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2021-11-02 23:11:38,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-02 23:11:38,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2021-11-02 23:11:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 67 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2021-11-02 23:11:38,034 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 26 [2021-11-02 23:11:38,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:38,035 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2021-11-02 23:11:38,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 19 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) [2021-11-02 23:11:38,035 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2021-11-02 23:11:38,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-02 23:11:38,036 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:38,036 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-02 23:11:38,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:38,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:38,246 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:38,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:38,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1286284937, now seen corresponding path program 2 times [2021-11-02 23:11:38,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:38,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520725016] [2021-11-02 23:11:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:38,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:38,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:38,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520725016] [2021-11-02 23:11:38,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520725016] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:38,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843908892] [2021-11-02 23:11:38,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:11:38,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:38,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:38,304 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:38,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-02 23:11:38,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:11:38,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:38,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 23:11:38,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:38,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843908892] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:38,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:38,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-02 23:11:38,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122145281] [2021-11-02 23:11:38,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 23:11:38,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:38,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 23:11:38,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-02 23:11:38,572 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 10 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) [2021-11-02 23:11:38,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:38,630 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2021-11-02 23:11:38,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 23:11:38,630 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 10 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 27 [2021-11-02 23:11:38,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:38,631 INFO L225 Difference]: With dead ends: 75 [2021-11-02 23:11:38,632 INFO L226 Difference]: Without dead ends: 74 [2021-11-02 23:11:38,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-02 23:11:38,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-02 23:11:38,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2021-11-02 23:11:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 71 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) [2021-11-02 23:11:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2021-11-02 23:11:38,639 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 27 [2021-11-02 23:11:38,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:38,639 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2021-11-02 23:11:38,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 10 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) [2021-11-02 23:11:38,639 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2021-11-02 23:11:38,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-02 23:11:38,640 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:38,640 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-02 23:11:38,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:38,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:38,858 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:38,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:38,858 INFO L85 PathProgramCache]: Analyzing trace with hash -830755061, now seen corresponding path program 2 times [2021-11-02 23:11:38,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:38,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941926805] [2021-11-02 23:11:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:38,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:38,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:38,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941926805] [2021-11-02 23:11:38,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941926805] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:38,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734030731] [2021-11-02 23:11:38,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:11:38,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:38,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:38,975 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:38,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-02 23:11:39,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:11:39,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:39,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 23:11:39,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:39,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734030731] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:39,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:39,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-11-02 23:11:39,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33796531] [2021-11-02 23:11:39,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 23:11:39,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:39,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 23:11:39,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-11-02 23:11:39,441 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 22 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:39,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:39,557 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2021-11-02 23:11:39,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 23:11:39,560 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-02 23:11:39,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:39,560 INFO L225 Difference]: With dead ends: 79 [2021-11-02 23:11:39,560 INFO L226 Difference]: Without dead ends: 78 [2021-11-02 23:11:39,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-02 23:11:39,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-02 23:11:39,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-11-02 23:11:39,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 75 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2021-11-02 23:11:39,564 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 29 [2021-11-02 23:11:39,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:39,565 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2021-11-02 23:11:39,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:39,565 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2021-11-02 23:11:39,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 23:11:39,567 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:39,568 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2021-11-02 23:11:39,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:39,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-02 23:11:39,778 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:39,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:39,778 INFO L85 PathProgramCache]: Analyzing trace with hash 508305293, now seen corresponding path program 2 times [2021-11-02 23:11:39,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:39,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040135508] [2021-11-02 23:11:39,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:39,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:39,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:39,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040135508] [2021-11-02 23:11:39,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040135508] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:39,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569627484] [2021-11-02 23:11:39,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:11:39,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:39,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:39,905 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:39,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-02 23:11:40,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:11:40,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:40,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 23:11:40,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:40,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569627484] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:40,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:40,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-11-02 23:11:40,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625178092] [2021-11-02 23:11:40,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 23:11:40,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:40,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 23:11:40,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-11-02 23:11:40,483 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 22 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) [2021-11-02 23:11:40,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:40,686 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2021-11-02 23:11:40,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 23:11:40,687 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 22 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 31 [2021-11-02 23:11:40,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:40,688 INFO L225 Difference]: With dead ends: 86 [2021-11-02 23:11:40,688 INFO L226 Difference]: Without dead ends: 85 [2021-11-02 23:11:40,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812 [2021-11-02 23:11:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-02 23:11:40,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2021-11-02 23:11:40,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.1518987341772151) internal successors, (91), 83 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) [2021-11-02 23:11:40,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2021-11-02 23:11:40,694 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 31 [2021-11-02 23:11:40,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:40,694 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2021-11-02 23:11:40,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 22 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) [2021-11-02 23:11:40,695 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2021-11-02 23:11:40,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 23:11:40,696 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:40,696 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:11:40,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:40,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-02 23:11:40,908 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:40,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:40,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1664972137, now seen corresponding path program 1 times [2021-11-02 23:11:40,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:40,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637187660] [2021-11-02 23:11:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:40,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:40,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:40,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637187660] [2021-11-02 23:11:40,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637187660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:11:40,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:11:40,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:11:40,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746484737] [2021-11-02 23:11:40,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:11:40,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:40,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:11:40,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:11:40,941 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:40,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:40,949 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2021-11-02 23:11:40,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:11:40,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-02 23:11:40,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:40,951 INFO L225 Difference]: With dead ends: 102 [2021-11-02 23:11:40,951 INFO L226 Difference]: Without dead ends: 82 [2021-11-02 23:11:40,952 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:11:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-02 23:11:40,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2021-11-02 23:11:40,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 77 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:40,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2021-11-02 23:11:40,956 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 33 [2021-11-02 23:11:40,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:40,957 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2021-11-02 23:11:40,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:40,957 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2021-11-02 23:11:40,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-02 23:11:40,958 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:40,958 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-02 23:11:40,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 23:11:40,959 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:40,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:40,959 INFO L85 PathProgramCache]: Analyzing trace with hash -976111867, now seen corresponding path program 2 times [2021-11-02 23:11:40,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:40,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273530471] [2021-11-02 23:11:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:40,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:41,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:41,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273530471] [2021-11-02 23:11:41,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273530471] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:41,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310692014] [2021-11-02 23:11:41,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:11:41,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:41,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:41,122 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:41,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-02 23:11:41,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:11:41,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:41,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 23:11:41,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:41,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310692014] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:41,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:41,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2021-11-02 23:11:41,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122512771] [2021-11-02 23:11:41,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-02 23:11:41,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:41,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-02 23:11:41,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2021-11-02 23:11:41,692 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand has 26 states, 25 states have (on average 2.76) internal successors, (69), 26 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) [2021-11-02 23:11:41,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:41,903 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2021-11-02 23:11:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 23:11:41,903 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.76) internal successors, (69), 26 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 35 [2021-11-02 23:11:41,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:41,904 INFO L225 Difference]: With dead ends: 83 [2021-11-02 23:11:41,904 INFO L226 Difference]: Without dead ends: 82 [2021-11-02 23:11:41,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=791, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 23:11:41,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-02 23:11:41,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2021-11-02 23:11:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 79 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2021-11-02 23:11:41,919 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 35 [2021-11-02 23:11:41,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:41,920 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2021-11-02 23:11:41,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.76) internal successors, (69), 26 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) [2021-11-02 23:11:41,921 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2021-11-02 23:11:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-02 23:11:41,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:41,921 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2021-11-02 23:11:41,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:42,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-02 23:11:42,138 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:42,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:42,138 INFO L85 PathProgramCache]: Analyzing trace with hash -721104808, now seen corresponding path program 3 times [2021-11-02 23:11:42,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:42,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626277348] [2021-11-02 23:11:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:42,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:42,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:42,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626277348] [2021-11-02 23:11:42,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626277348] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:42,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472542188] [2021-11-02 23:11:42,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:11:42,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:42,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:42,224 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:42,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-02 23:11:42,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-02 23:11:42,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:42,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 23:11:42,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:42,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472542188] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:42,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:42,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2021-11-02 23:11:42,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245796552] [2021-11-02 23:11:42,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 23:11:42,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:42,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 23:11:42,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-11-02 23:11:42,742 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 20 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) [2021-11-02 23:11:43,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:43,172 INFO L93 Difference]: Finished difference Result 101 states and 110 transitions. [2021-11-02 23:11:43,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 23:11:43,173 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 20 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 35 [2021-11-02 23:11:43,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:43,174 INFO L225 Difference]: With dead ends: 101 [2021-11-02 23:11:43,174 INFO L226 Difference]: Without dead ends: 100 [2021-11-02 23:11:43,175 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 23:11:43,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-02 23:11:43,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2021-11-02 23:11:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 78 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:43,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-11-02 23:11:43,180 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 35 [2021-11-02 23:11:43,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:43,181 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-11-02 23:11:43,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 20 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) [2021-11-02 23:11:43,181 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-11-02 23:11:43,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 23:11:43,182 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:43,182 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2021-11-02 23:11:43,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:43,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-02 23:11:43,383 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:43,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1491984230, now seen corresponding path program 3 times [2021-11-02 23:11:43,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:43,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709826489] [2021-11-02 23:11:43,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:43,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:43,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:43,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709826489] [2021-11-02 23:11:43,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709826489] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:43,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475135120] [2021-11-02 23:11:43,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:11:43,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:43,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:43,478 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:43,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-02 23:11:43,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-02 23:11:43,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:43,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 23:11:43,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:43,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475135120] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:43,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:43,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-11-02 23:11:43,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798104447] [2021-11-02 23:11:43,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 23:11:43,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:43,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 23:11:43,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-02 23:11:43,868 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 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) [2021-11-02 23:11:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:43,945 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2021-11-02 23:11:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 23:11:43,946 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 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 37 [2021-11-02 23:11:43,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:43,947 INFO L225 Difference]: With dead ends: 97 [2021-11-02 23:11:43,947 INFO L226 Difference]: Without dead ends: 96 [2021-11-02 23:11:43,948 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-11-02 23:11:43,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-02 23:11:43,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2021-11-02 23:11:43,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.101123595505618) internal successors, (98), 92 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:43,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2021-11-02 23:11:43,953 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 37 [2021-11-02 23:11:43,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:43,954 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2021-11-02 23:11:43,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 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) [2021-11-02 23:11:43,954 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2021-11-02 23:11:43,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 23:11:43,955 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:43,955 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-11-02 23:11:43,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:44,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:44,170 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:44,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:44,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1874993083, now seen corresponding path program 2 times [2021-11-02 23:11:44,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:44,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090440340] [2021-11-02 23:11:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:44,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:44,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:44,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090440340] [2021-11-02 23:11:44,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090440340] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:44,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739209833] [2021-11-02 23:11:44,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:11:44,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:44,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:44,318 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:44,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-02 23:11:44,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:11:44,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:44,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 23:11:44,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:44,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739209833] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:44,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:44,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-11-02 23:11:44,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699024355] [2021-11-02 23:11:44,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-02 23:11:44,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:44,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-02 23:11:44,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2021-11-02 23:11:44,987 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:45,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:45,214 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2021-11-02 23:11:45,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 23:11:45,215 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-02 23:11:45,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:45,216 INFO L225 Difference]: With dead ends: 101 [2021-11-02 23:11:45,216 INFO L226 Difference]: Without dead ends: 100 [2021-11-02 23:11:45,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=287, Invalid=835, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 23:11:45,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-02 23:11:45,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2021-11-02 23:11:45,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.0898876404494382) internal successors, (97), 92 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:45,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2021-11-02 23:11:45,222 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 38 [2021-11-02 23:11:45,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:45,223 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2021-11-02 23:11:45,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:45,223 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2021-11-02 23:11:45,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 23:11:45,224 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:45,224 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2021-11-02 23:11:45,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:45,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:45,443 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:45,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:45,444 INFO L85 PathProgramCache]: Analyzing trace with hash 722233564, now seen corresponding path program 3 times [2021-11-02 23:11:45,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:45,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799238763] [2021-11-02 23:11:45,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:45,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:45,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:45,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799238763] [2021-11-02 23:11:45,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799238763] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:45,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781637291] [2021-11-02 23:11:45,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:11:45,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:45,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:45,596 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:45,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-02 23:11:45,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-02 23:11:45,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:45,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 23:11:45,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:46,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781637291] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:46,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:46,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-11-02 23:11:46,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643071163] [2021-11-02 23:11:46,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 23:11:46,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:46,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 23:11:46,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2021-11-02 23:11:46,387 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 28 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 28 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:46,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:46,585 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2021-11-02 23:11:46,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 23:11:46,586 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 28 states have internal predecessors, (77), 0 states have call successors, (0), 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 [2021-11-02 23:11:46,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:46,587 INFO L225 Difference]: With dead ends: 100 [2021-11-02 23:11:46,587 INFO L226 Difference]: Without dead ends: 99 [2021-11-02 23:11:46,589 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=872, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 23:11:46,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-02 23:11:46,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2021-11-02 23:11:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 93 states have (on average 1.086021505376344) internal successors, (101), 96 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) [2021-11-02 23:11:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2021-11-02 23:11:46,603 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 39 [2021-11-02 23:11:46,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:46,603 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2021-11-02 23:11:46,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 28 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2021-11-02 23:11:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 23:11:46,604 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:46,605 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1] [2021-11-02 23:11:46,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:46,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-02 23:11:46,810 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:46,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:46,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1718245090, now seen corresponding path program 3 times [2021-11-02 23:11:46,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:46,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705268107] [2021-11-02 23:11:46,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:46,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:46,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:46,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705268107] [2021-11-02 23:11:46,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705268107] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:46,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343049901] [2021-11-02 23:11:46,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:11:46,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:46,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:46,970 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:46,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-02 23:11:47,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-02 23:11:47,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:47,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 23:11:47,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:47,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343049901] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:47,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:47,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-11-02 23:11:47,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120180620] [2021-11-02 23:11:47,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 23:11:47,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:47,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 23:11:47,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2021-11-02 23:11:47,821 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 28 states, 27 states have (on average 3.0) internal successors, (81), 28 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) [2021-11-02 23:11:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:48,062 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2021-11-02 23:11:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 23:11:48,062 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.0) internal successors, (81), 28 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 41 [2021-11-02 23:11:48,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:48,063 INFO L225 Difference]: With dead ends: 101 [2021-11-02 23:11:48,063 INFO L226 Difference]: Without dead ends: 100 [2021-11-02 23:11:48,064 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 23:11:48,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-02 23:11:48,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2021-11-02 23:11:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 95 states have (on average 1.0842105263157895) internal successors, (103), 98 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:48,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2021-11-02 23:11:48,070 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 41 [2021-11-02 23:11:48,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:48,070 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2021-11-02 23:11:48,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.0) internal successors, (81), 28 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) [2021-11-02 23:11:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2021-11-02 23:11:48,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 23:11:48,071 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:48,072 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2021-11-02 23:11:48,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:48,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:48,286 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:48,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:48,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1697772786, now seen corresponding path program 3 times [2021-11-02 23:11:48,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:48,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320878090] [2021-11-02 23:11:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:48,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:48,483 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:48,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:48,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320878090] [2021-11-02 23:11:48,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320878090] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:48,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435743691] [2021-11-02 23:11:48,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:11:48,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:48,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:48,486 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:48,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-02 23:11:48,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-02 23:11:48,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:48,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 23:11:48,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:49,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435743691] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:49,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:49,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2021-11-02 23:11:49,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928682205] [2021-11-02 23:11:49,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 23:11:49,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:49,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 23:11:49,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=899, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 23:11:49,415 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:49,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:49,736 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2021-11-02 23:11:49,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 23:11:49,737 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2021-11-02 23:11:49,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:49,738 INFO L225 Difference]: With dead ends: 104 [2021-11-02 23:11:49,738 INFO L226 Difference]: Without dead ends: 103 [2021-11-02 23:11:49,739 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=428, Invalid=1378, Unknown=0, NotChecked=0, Total=1806 [2021-11-02 23:11:49,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-02 23:11:49,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2021-11-02 23:11:49,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 97 states have (on average 1.0824742268041236) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2021-11-02 23:11:49,744 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 47 [2021-11-02 23:11:49,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:49,744 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2021-11-02 23:11:49,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:49,745 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2021-11-02 23:11:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 23:11:49,746 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:49,746 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2021-11-02 23:11:49,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:49,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:49,947 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:49,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:49,947 INFO L85 PathProgramCache]: Analyzing trace with hash -206014101, now seen corresponding path program 4 times [2021-11-02 23:11:49,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:49,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087219564] [2021-11-02 23:11:49,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:49,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:50,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:50,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087219564] [2021-11-02 23:11:50,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087219564] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:50,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464281241] [2021-11-02 23:11:50,076 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:11:50,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:50,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:50,078 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:50,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-02 23:11:50,436 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:11:50,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:50,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 23:11:50,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:50,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464281241] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:50,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:50,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-11-02 23:11:50,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646960379] [2021-11-02 23:11:50,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 23:11:50,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:50,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 23:11:50,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-02 23:11:50,613 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 14 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) [2021-11-02 23:11:50,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:50,710 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2021-11-02 23:11:50,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 23:11:50,711 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 14 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 47 [2021-11-02 23:11:50,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:50,712 INFO L225 Difference]: With dead ends: 119 [2021-11-02 23:11:50,712 INFO L226 Difference]: Without dead ends: 118 [2021-11-02 23:11:50,713 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-02 23:11:50,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-02 23:11:50,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 115. [2021-11-02 23:11:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 111 states have (on average 1.0810810810810811) internal successors, (120), 114 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:50,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2021-11-02 23:11:50,719 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 47 [2021-11-02 23:11:50,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:50,720 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2021-11-02 23:11:50,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 14 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) [2021-11-02 23:11:50,720 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2021-11-02 23:11:50,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 23:11:50,721 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:50,721 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2021-11-02 23:11:50,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-11-02 23:11:50,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-02 23:11:50,934 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:50,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:50,934 INFO L85 PathProgramCache]: Analyzing trace with hash -411053715, now seen corresponding path program 4 times [2021-11-02 23:11:50,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:50,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739875473] [2021-11-02 23:11:50,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:50,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:51,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:51,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739875473] [2021-11-02 23:11:51,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739875473] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:51,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407971834] [2021-11-02 23:11:51,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:11:51,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:51,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:51,133 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:51,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-02 23:11:51,464 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:11:51,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:51,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 23:11:51,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:52,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407971834] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:52,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:52,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2021-11-02 23:11:52,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242724739] [2021-11-02 23:11:52,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 23:11:52,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 23:11:52,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=913, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 23:11:52,017 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 34 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:52,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:52,198 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2021-11-02 23:11:52,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 23:11:52,199 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 34 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-02 23:11:52,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:52,200 INFO L225 Difference]: With dead ends: 123 [2021-11-02 23:11:52,200 INFO L226 Difference]: Without dead ends: 122 [2021-11-02 23:11:52,201 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=349, Invalid=1291, Unknown=0, NotChecked=0, Total=1640 [2021-11-02 23:11:52,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-02 23:11:52,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2021-11-02 23:11:52,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.0782608695652174) internal successors, (124), 118 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) [2021-11-02 23:11:52,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2021-11-02 23:11:52,207 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 49 [2021-11-02 23:11:52,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:52,208 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2021-11-02 23:11:52,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 34 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:52,208 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2021-11-02 23:11:52,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-02 23:11:52,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:52,209 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2021-11-02 23:11:52,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-02 23:11:52,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-02 23:11:52,434 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:52,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:52,434 INFO L85 PathProgramCache]: Analyzing trace with hash 814251694, now seen corresponding path program 3 times [2021-11-02 23:11:52,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:52,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041504241] [2021-11-02 23:11:52,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:52,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:52,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:52,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041504241] [2021-11-02 23:11:52,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041504241] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:52,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002996965] [2021-11-02 23:11:52,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:11:52,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:52,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:52,682 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:52,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-02 23:11:53,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-02 23:11:53,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:53,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-02 23:11:53,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:53,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002996965] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:53,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:53,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-02 23:11:53,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106693622] [2021-11-02 23:11:53,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-02 23:11:53,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:53,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-02 23:11:53,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=948, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 23:11:53,651 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand has 35 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:53,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:53,898 INFO L93 Difference]: Finished difference Result 124 states and 128 transitions. [2021-11-02 23:11:53,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 23:11:53,898 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-02 23:11:53,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:53,899 INFO L225 Difference]: With dead ends: 124 [2021-11-02 23:11:53,900 INFO L226 Difference]: Without dead ends: 123 [2021-11-02 23:11:53,901 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=456, Invalid=1436, Unknown=0, NotChecked=0, Total=1892 [2021-11-02 23:11:53,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-02 23:11:53,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2021-11-02 23:11:53,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.0695652173913044) internal successors, (123), 118 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:53,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2021-11-02 23:11:53,907 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 50 [2021-11-02 23:11:53,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:53,907 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2021-11-02 23:11:53,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:53,908 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2021-11-02 23:11:53,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 23:11:53,908 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:53,908 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1] [2021-11-02 23:11:53,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:54,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:54,129 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:54,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:54,129 INFO L85 PathProgramCache]: Analyzing trace with hash 114372975, now seen corresponding path program 4 times [2021-11-02 23:11:54,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:54,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671361027] [2021-11-02 23:11:54,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:54,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:54,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:54,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671361027] [2021-11-02 23:11:54,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671361027] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:54,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387128892] [2021-11-02 23:11:54,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:11:54,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:54,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:54,338 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:54,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-02 23:11:54,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:11:54,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:54,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 23:11:54,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:55,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387128892] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:55,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:55,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2021-11-02 23:11:55,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086343696] [2021-11-02 23:11:55,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 23:11:55,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:55,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 23:11:55,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=912, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 23:11:55,627 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 34 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 34 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) [2021-11-02 23:11:55,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:55,903 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2021-11-02 23:11:55,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 23:11:55,904 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 34 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 51 [2021-11-02 23:11:55,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:55,905 INFO L225 Difference]: With dead ends: 123 [2021-11-02 23:11:55,905 INFO L226 Difference]: Without dead ends: 122 [2021-11-02 23:11:55,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=450, Invalid=1530, Unknown=0, NotChecked=0, Total=1980 [2021-11-02 23:11:55,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-02 23:11:55,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2021-11-02 23:11:55,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 117 states have (on average 1.0683760683760684) internal successors, (125), 120 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2021-11-02 23:11:55,912 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 51 [2021-11-02 23:11:55,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:55,912 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2021-11-02 23:11:55,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 34 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) [2021-11-02 23:11:55,912 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2021-11-02 23:11:55,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 23:11:55,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:55,913 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2021-11-02 23:11:55,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-11-02 23:11:56,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:56,118 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:56,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:56,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1426505980, now seen corresponding path program 5 times [2021-11-02 23:11:56,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:56,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906013668] [2021-11-02 23:11:56,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:56,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:56,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:56,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906013668] [2021-11-02 23:11:56,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906013668] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:56,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761394768] [2021-11-02 23:11:56,285 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:11:56,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:56,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:56,290 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:56,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-02 23:11:56,718 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-02 23:11:56,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:56,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 23:11:56,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:56,900 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:56,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761394768] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:56,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:56,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-11-02 23:11:56,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771585792] [2021-11-02 23:11:56,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 23:11:56,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:56,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 23:11:56,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-02 23:11:56,902 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 16 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) [2021-11-02 23:11:56,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:56,991 INFO L93 Difference]: Finished difference Result 142 states and 147 transitions. [2021-11-02 23:11:56,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 23:11:56,991 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 16 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 57 [2021-11-02 23:11:56,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:56,992 INFO L225 Difference]: With dead ends: 142 [2021-11-02 23:11:56,993 INFO L226 Difference]: Without dead ends: 141 [2021-11-02 23:11:56,993 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2021-11-02 23:11:56,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-02 23:11:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2021-11-02 23:11:56,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 133 states have (on average 1.0751879699248121) internal successors, (143), 136 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) [2021-11-02 23:11:57,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 143 transitions. [2021-11-02 23:11:57,000 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 143 transitions. Word has length 57 [2021-11-02 23:11:57,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:57,001 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 143 transitions. [2021-11-02 23:11:57,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 16 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) [2021-11-02 23:11:57,001 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 143 transitions. [2021-11-02 23:11:57,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 23:11:57,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:57,002 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2021-11-02 23:11:57,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-02 23:11:57,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-02 23:11:57,226 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:57,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:57,226 INFO L85 PathProgramCache]: Analyzing trace with hash -60049569, now seen corresponding path program 4 times [2021-11-02 23:11:57,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:57,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608857366] [2021-11-02 23:11:57,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:57,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:57,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:57,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608857366] [2021-11-02 23:11:57,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608857366] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:57,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194442366] [2021-11-02 23:11:57,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:11:57,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:57,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:57,490 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:57,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-02 23:11:57,963 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:11:57,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:11:57,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-02 23:11:57,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:11:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:58,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194442366] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:58,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:11:58,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 41 [2021-11-02 23:11:58,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22741669] [2021-11-02 23:11:58,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-02 23:11:58,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:11:58,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-02 23:11:58,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1398, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 23:11:58,732 INFO L87 Difference]: Start difference. First operand 137 states and 143 transitions. Second operand has 42 states, 41 states have (on average 2.8536585365853657) internal successors, (117), 42 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:59,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:11:59,082 INFO L93 Difference]: Finished difference Result 138 states and 143 transitions. [2021-11-02 23:11:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-02 23:11:59,082 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.8536585365853657) internal successors, (117), 42 states have internal predecessors, (117), 0 states have call successors, (0), 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 [2021-11-02 23:11:59,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:11:59,084 INFO L225 Difference]: With dead ends: 138 [2021-11-02 23:11:59,084 INFO L226 Difference]: Without dead ends: 137 [2021-11-02 23:11:59,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=629, Invalid=2127, Unknown=0, NotChecked=0, Total=2756 [2021-11-02 23:11:59,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-02 23:11:59,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-02 23:11:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 133 states have (on average 1.0676691729323309) internal successors, (142), 136 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) [2021-11-02 23:11:59,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 142 transitions. [2021-11-02 23:11:59,092 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 142 transitions. Word has length 59 [2021-11-02 23:11:59,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:11:59,093 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 142 transitions. [2021-11-02 23:11:59,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.8536585365853657) internal successors, (117), 42 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:11:59,094 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 142 transitions. [2021-11-02 23:11:59,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 23:11:59,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:11:59,095 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2021-11-02 23:11:59,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-02 23:11:59,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:59,311 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:11:59,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:11:59,311 INFO L85 PathProgramCache]: Analyzing trace with hash 777681086, now seen corresponding path program 5 times [2021-11-02 23:11:59,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:11:59,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705123017] [2021-11-02 23:11:59,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:11:59,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:11:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:11:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:11:59,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:11:59,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705123017] [2021-11-02 23:11:59,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705123017] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:11:59,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635436753] [2021-11-02 23:11:59,544 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:11:59,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:11:59,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:11:59,545 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:11:59,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-02 23:12:00,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-02 23:12:00,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:12:00,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-02 23:12:00,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:00,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635436753] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:00,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:00,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2021-11-02 23:12:00,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521695493] [2021-11-02 23:12:00,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-02 23:12:00,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:00,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-02 23:12:00,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1283, Unknown=0, NotChecked=0, Total=1560 [2021-11-02 23:12:00,745 INFO L87 Difference]: Start difference. First operand 137 states and 142 transitions. Second operand has 40 states, 39 states have (on average 3.0) internal successors, (117), 40 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:01,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:01,026 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2021-11-02 23:12:01,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 23:12:01,027 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 3.0) internal successors, (117), 40 states have internal predecessors, (117), 0 states have call successors, (0), 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 [2021-11-02 23:12:01,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:01,028 INFO L225 Difference]: With dead ends: 145 [2021-11-02 23:12:01,029 INFO L226 Difference]: Without dead ends: 144 [2021-11-02 23:12:01,030 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=464, Invalid=1792, Unknown=0, NotChecked=0, Total=2256 [2021-11-02 23:12:01,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-02 23:12:01,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2021-11-02 23:12:01,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 137 states have (on average 1.0656934306569343) internal successors, (146), 140 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) [2021-11-02 23:12:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 146 transitions. [2021-11-02 23:12:01,037 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 146 transitions. Word has length 59 [2021-11-02 23:12:01,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:01,038 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 146 transitions. [2021-11-02 23:12:01,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 3.0) internal successors, (117), 40 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:01,038 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 146 transitions. [2021-11-02 23:12:01,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 23:12:01,039 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:01,039 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1] [2021-11-02 23:12:01,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-02 23:12:01,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-02 23:12:01,247 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:01,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:01,247 INFO L85 PathProgramCache]: Analyzing trace with hash 27216000, now seen corresponding path program 5 times [2021-11-02 23:12:01,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:01,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548153586] [2021-11-02 23:12:01,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:01,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:01,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:01,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548153586] [2021-11-02 23:12:01,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548153586] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:01,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841417737] [2021-11-02 23:12:01,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:12:01,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:01,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:01,511 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:01,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-02 23:12:02,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-02 23:12:02,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:12:02,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-02 23:12:02,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:02,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841417737] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:02,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:02,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2021-11-02 23:12:02,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145030608] [2021-11-02 23:12:02,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-02 23:12:02,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:02,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-02 23:12:02,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1282, Unknown=0, NotChecked=0, Total=1560 [2021-11-02 23:12:02,758 INFO L87 Difference]: Start difference. First operand 141 states and 146 transitions. Second operand has 40 states, 39 states have (on average 3.1025641025641026) internal successors, (121), 40 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) [2021-11-02 23:12:03,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:03,169 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2021-11-02 23:12:03,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 23:12:03,170 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 3.1025641025641026) internal successors, (121), 40 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 61 [2021-11-02 23:12:03,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:03,171 INFO L225 Difference]: With dead ends: 145 [2021-11-02 23:12:03,172 INFO L226 Difference]: Without dead ends: 144 [2021-11-02 23:12:03,173 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=562, Invalid=1988, Unknown=0, NotChecked=0, Total=2550 [2021-11-02 23:12:03,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-02 23:12:03,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2021-11-02 23:12:03,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 139 states have (on average 1.064748201438849) internal successors, (148), 142 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) [2021-11-02 23:12:03,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 148 transitions. [2021-11-02 23:12:03,181 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 148 transitions. Word has length 61 [2021-11-02 23:12:03,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:03,181 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 148 transitions. [2021-11-02 23:12:03,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 3.1025641025641026) internal successors, (121), 40 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) [2021-11-02 23:12:03,182 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 148 transitions. [2021-11-02 23:12:03,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 23:12:03,183 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:03,183 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-11-02 23:12:03,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-02 23:12:03,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-02 23:12:03,394 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:03,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:03,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2064714017, now seen corresponding path program 4 times [2021-11-02 23:12:03,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:03,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135797157] [2021-11-02 23:12:03,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:03,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:03,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:03,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135797157] [2021-11-02 23:12:03,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135797157] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:03,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576066293] [2021-11-02 23:12:03,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:12:03,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:03,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:03,722 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:03,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-02 23:12:04,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:12:04,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:12:04,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 23:12:04,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:05,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576066293] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:05,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:05,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2021-11-02 23:12:05,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083859398] [2021-11-02 23:12:05,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-02 23:12:05,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:05,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-02 23:12:05,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1459, Unknown=0, NotChecked=0, Total=1806 [2021-11-02 23:12:05,629 INFO L87 Difference]: Start difference. First operand 143 states and 148 transitions. Second operand has 43 states, 42 states have (on average 2.880952380952381) internal successors, (121), 43 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) [2021-11-02 23:12:06,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:06,110 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2021-11-02 23:12:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 23:12:06,110 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.880952380952381) internal successors, (121), 43 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 62 [2021-11-02 23:12:06,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:06,111 INFO L225 Difference]: With dead ends: 145 [2021-11-02 23:12:06,112 INFO L226 Difference]: Without dead ends: 144 [2021-11-02 23:12:06,113 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=663, Invalid=2199, Unknown=0, NotChecked=0, Total=2862 [2021-11-02 23:12:06,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-02 23:12:06,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2021-11-02 23:12:06,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 139 states have (on average 1.0575539568345325) internal successors, (147), 142 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) [2021-11-02 23:12:06,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2021-11-02 23:12:06,119 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 62 [2021-11-02 23:12:06,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:06,120 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2021-11-02 23:12:06,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.880952380952381) internal successors, (121), 43 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) [2021-11-02 23:12:06,120 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2021-11-02 23:12:06,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 23:12:06,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:06,122 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1] [2021-11-02 23:12:06,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-11-02 23:12:06,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-02 23:12:06,330 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:06,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:06,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1343125683, now seen corresponding path program 6 times [2021-11-02 23:12:06,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:06,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967230953] [2021-11-02 23:12:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:06,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:06,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:06,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967230953] [2021-11-02 23:12:06,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967230953] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:06,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766103787] [2021-11-02 23:12:06,513 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:12:06,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:06,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:06,526 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:06,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-02 23:12:07,649 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-02 23:12:07,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:12:07,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 23:12:07,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:07,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766103787] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:07,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:07,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-11-02 23:12:07,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456163628] [2021-11-02 23:12:07,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 23:12:07,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:07,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 23:12:07,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-02 23:12:07,933 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand has 18 states, 17 states have (on average 4.352941176470588) internal successors, (74), 18 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) [2021-11-02 23:12:08,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:08,070 INFO L93 Difference]: Finished difference Result 164 states and 169 transitions. [2021-11-02 23:12:08,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 23:12:08,071 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.352941176470588) internal successors, (74), 18 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 67 [2021-11-02 23:12:08,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:08,072 INFO L225 Difference]: With dead ends: 164 [2021-11-02 23:12:08,072 INFO L226 Difference]: Without dead ends: 163 [2021-11-02 23:12:08,073 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2021-11-02 23:12:08,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-02 23:12:08,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2021-11-02 23:12:08,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 155 states have (on average 1.064516129032258) internal successors, (165), 158 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 165 transitions. [2021-11-02 23:12:08,081 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 165 transitions. Word has length 67 [2021-11-02 23:12:08,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:08,082 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 165 transitions. [2021-11-02 23:12:08,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.352941176470588) internal successors, (74), 18 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) [2021-11-02 23:12:08,082 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 165 transitions. [2021-11-02 23:12:08,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 23:12:08,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:08,083 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1] [2021-11-02 23:12:08,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-02 23:12:08,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:08,302 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:08,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:08,302 INFO L85 PathProgramCache]: Analyzing trace with hash 2041376463, now seen corresponding path program 6 times [2021-11-02 23:12:08,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:08,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926931711] [2021-11-02 23:12:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:08,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:08,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:08,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926931711] [2021-11-02 23:12:08,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926931711] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:08,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382572804] [2021-11-02 23:12:08,707 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:12:08,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:08,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:08,710 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:08,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-02 23:12:09,824 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-02 23:12:09,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:12:09,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-02 23:12:09,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:10,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382572804] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:10,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:10,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2021-11-02 23:12:10,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145332324] [2021-11-02 23:12:10,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-02 23:12:10,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:10,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-02 23:12:10,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=1716, Unknown=0, NotChecked=0, Total=2070 [2021-11-02 23:12:10,831 INFO L87 Difference]: Start difference. First operand 159 states and 165 transitions. Second operand has 46 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:11,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:11,158 INFO L93 Difference]: Finished difference Result 168 states and 173 transitions. [2021-11-02 23:12:11,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 23:12:11,159 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 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 [2021-11-02 23:12:11,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:11,161 INFO L225 Difference]: With dead ends: 168 [2021-11-02 23:12:11,161 INFO L226 Difference]: Without dead ends: 167 [2021-11-02 23:12:11,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=595, Invalid=2375, Unknown=0, NotChecked=0, Total=2970 [2021-11-02 23:12:11,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-02 23:12:11,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2021-11-02 23:12:11,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 159 states have (on average 1.0628930817610063) internal successors, (169), 162 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:11,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 169 transitions. [2021-11-02 23:12:11,170 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 169 transitions. Word has length 69 [2021-11-02 23:12:11,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:11,171 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 169 transitions. [2021-11-02 23:12:11,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:11,172 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 169 transitions. [2021-11-02 23:12:11,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 23:12:11,172 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:11,173 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2021-11-02 23:12:11,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-02 23:12:11,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-11-02 23:12:11,388 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:11,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1591492172, now seen corresponding path program 5 times [2021-11-02 23:12:11,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:11,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330124131] [2021-11-02 23:12:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:11,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:11,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:11,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330124131] [2021-11-02 23:12:11,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330124131] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:11,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619054889] [2021-11-02 23:12:11,825 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:12:11,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:11,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:11,829 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:11,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-02 23:12:12,617 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-02 23:12:12,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:12:12,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-02 23:12:12,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:13,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619054889] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:13,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:13,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2021-11-02 23:12:13,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714346472] [2021-11-02 23:12:13,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-02 23:12:13,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:13,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-02 23:12:13,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=2007, Unknown=0, NotChecked=0, Total=2450 [2021-11-02 23:12:13,659 INFO L87 Difference]: Start difference. First operand 163 states and 169 transitions. Second operand has 50 states, 49 states have (on average 2.877551020408163) internal successors, (141), 50 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) [2021-11-02 23:12:14,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:14,192 INFO L93 Difference]: Finished difference Result 164 states and 169 transitions. [2021-11-02 23:12:14,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 23:12:14,193 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.877551020408163) internal successors, (141), 50 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 71 [2021-11-02 23:12:14,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:14,194 INFO L225 Difference]: With dead ends: 164 [2021-11-02 23:12:14,194 INFO L226 Difference]: Without dead ends: 163 [2021-11-02 23:12:14,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=868, Invalid=3038, Unknown=0, NotChecked=0, Total=3906 [2021-11-02 23:12:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-02 23:12:14,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-02 23:12:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 159 states have (on average 1.0566037735849056) internal successors, (168), 162 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) [2021-11-02 23:12:14,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 168 transitions. [2021-11-02 23:12:14,206 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 168 transitions. Word has length 71 [2021-11-02 23:12:14,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:14,206 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 168 transitions. [2021-11-02 23:12:14,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.877551020408163) internal successors, (141), 50 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) [2021-11-02 23:12:14,207 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 168 transitions. [2021-11-02 23:12:14,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 23:12:14,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:14,208 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1] [2021-11-02 23:12:14,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-02 23:12:14,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:14,426 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:14,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1037271471, now seen corresponding path program 6 times [2021-11-02 23:12:14,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:14,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513855100] [2021-11-02 23:12:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:14,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:14,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:14,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513855100] [2021-11-02 23:12:14,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513855100] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:14,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771086476] [2021-11-02 23:12:14,800 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:12:14,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:14,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:14,802 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:14,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-02 23:12:15,950 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-02 23:12:15,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:12:15,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-02 23:12:15,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:16,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771086476] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:16,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:16,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2021-11-02 23:12:16,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310995616] [2021-11-02 23:12:16,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-02 23:12:16,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:16,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-02 23:12:16,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=1715, Unknown=0, NotChecked=0, Total=2070 [2021-11-02 23:12:16,894 INFO L87 Difference]: Start difference. First operand 163 states and 168 transitions. Second operand has 46 states, 45 states have (on average 3.1333333333333333) internal successors, (141), 46 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) [2021-11-02 23:12:17,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:17,449 INFO L93 Difference]: Finished difference Result 167 states and 172 transitions. [2021-11-02 23:12:17,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 23:12:17,449 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.1333333333333333) internal successors, (141), 46 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 71 [2021-11-02 23:12:17,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:17,451 INFO L225 Difference]: With dead ends: 167 [2021-11-02 23:12:17,451 INFO L226 Difference]: Without dead ends: 166 [2021-11-02 23:12:17,452 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=791, Invalid=2869, Unknown=0, NotChecked=0, Total=3660 [2021-11-02 23:12:17,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-02 23:12:17,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2021-11-02 23:12:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 161 states have (on average 1.0559006211180124) internal successors, (170), 164 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:17,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 170 transitions. [2021-11-02 23:12:17,465 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 170 transitions. Word has length 71 [2021-11-02 23:12:17,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:17,465 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 170 transitions. [2021-11-02 23:12:17,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.1333333333333333) internal successors, (141), 46 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) [2021-11-02 23:12:17,466 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 170 transitions. [2021-11-02 23:12:17,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 23:12:17,467 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:17,467 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1] [2021-11-02 23:12:17,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-02 23:12:17,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:17,686 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:17,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:17,686 INFO L85 PathProgramCache]: Analyzing trace with hash -622828, now seen corresponding path program 5 times [2021-11-02 23:12:17,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:17,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515659586] [2021-11-02 23:12:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:17,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:18,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:18,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515659586] [2021-11-02 23:12:18,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515659586] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:18,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099926995] [2021-11-02 23:12:18,072 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:12:18,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:18,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:18,073 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:18,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-02 23:12:18,925 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-02 23:12:18,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:12:18,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-02 23:12:18,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:19,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099926995] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:19,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:19,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2021-11-02 23:12:19,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700773101] [2021-11-02 23:12:19,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-02 23:12:19,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:19,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-02 23:12:19,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=2080, Unknown=0, NotChecked=0, Total=2550 [2021-11-02 23:12:19,822 INFO L87 Difference]: Start difference. First operand 165 states and 170 transitions. Second operand has 51 states, 50 states have (on average 2.9) internal successors, (145), 51 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:20,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:20,361 INFO L93 Difference]: Finished difference Result 167 states and 171 transitions. [2021-11-02 23:12:20,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-02 23:12:20,362 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.9) internal successors, (145), 51 states have internal predecessors, (145), 0 states have call successors, (0), 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 [2021-11-02 23:12:20,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:20,363 INFO L225 Difference]: With dead ends: 167 [2021-11-02 23:12:20,364 INFO L226 Difference]: Without dead ends: 166 [2021-11-02 23:12:20,365 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1342 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=908, Invalid=3124, Unknown=0, NotChecked=0, Total=4032 [2021-11-02 23:12:20,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-02 23:12:20,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2021-11-02 23:12:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 161 states have (on average 1.049689440993789) internal successors, (169), 164 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 169 transitions. [2021-11-02 23:12:20,376 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 169 transitions. Word has length 74 [2021-11-02 23:12:20,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:20,376 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 169 transitions. [2021-11-02 23:12:20,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.9) internal successors, (145), 51 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:20,377 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 169 transitions. [2021-11-02 23:12:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 23:12:20,378 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:20,378 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1] [2021-11-02 23:12:20,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-02 23:12:20,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-11-02 23:12:20,594 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:20,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:20,594 INFO L85 PathProgramCache]: Analyzing trace with hash -319202210, now seen corresponding path program 7 times [2021-11-02 23:12:20,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:20,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785830130] [2021-11-02 23:12:20,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:20,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:20,801 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:20,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:20,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785830130] [2021-11-02 23:12:20,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785830130] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:20,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125970251] [2021-11-02 23:12:20,802 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 23:12:20,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:20,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:20,804 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:20,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-02 23:12:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:21,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 23:12:21,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:22,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125970251] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:22,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:22,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-11-02 23:12:22,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192647470] [2021-11-02 23:12:22,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 23:12:22,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:22,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 23:12:22,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-11-02 23:12:22,224 INFO L87 Difference]: Start difference. First operand 165 states and 169 transitions. Second operand has 20 states, 19 states have (on average 4.421052631578948) internal successors, (84), 20 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) [2021-11-02 23:12:22,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:22,365 INFO L93 Difference]: Finished difference Result 186 states and 191 transitions. [2021-11-02 23:12:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 23:12:22,366 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.421052631578948) internal successors, (84), 20 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 77 [2021-11-02 23:12:22,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:22,370 INFO L225 Difference]: With dead ends: 186 [2021-11-02 23:12:22,371 INFO L226 Difference]: Without dead ends: 185 [2021-11-02 23:12:22,371 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2021-11-02 23:12:22,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-02 23:12:22,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 181. [2021-11-02 23:12:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 177 states have (on average 1.0564971751412429) internal successors, (187), 180 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) [2021-11-02 23:12:22,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 187 transitions. [2021-11-02 23:12:22,381 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 187 transitions. Word has length 77 [2021-11-02 23:12:22,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:22,382 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 187 transitions. [2021-11-02 23:12:22,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.421052631578948) internal successors, (84), 20 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) [2021-11-02 23:12:22,382 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 187 transitions. [2021-11-02 23:12:22,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 23:12:22,383 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:22,384 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1] [2021-11-02 23:12:22,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-02 23:12:22,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-02 23:12:22,586 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:22,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:22,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1810644064, now seen corresponding path program 7 times [2021-11-02 23:12:22,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:22,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460430157] [2021-11-02 23:12:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:22,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:23,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:23,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460430157] [2021-11-02 23:12:23,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460430157] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:23,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455814705] [2021-11-02 23:12:23,004 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 23:12:23,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:23,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:23,006 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:23,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-02 23:12:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:24,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-02 23:12:24,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:25,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455814705] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:25,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:25,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2021-11-02 23:12:25,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491421744] [2021-11-02 23:12:25,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-02 23:12:25,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:25,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-02 23:12:25,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=2211, Unknown=0, NotChecked=0, Total=2652 [2021-11-02 23:12:25,058 INFO L87 Difference]: Start difference. First operand 181 states and 187 transitions. Second operand has 52 states, 51 states have (on average 3.0784313725490198) internal successors, (157), 52 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) [2021-11-02 23:12:25,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:25,358 INFO L93 Difference]: Finished difference Result 190 states and 195 transitions. [2021-11-02 23:12:25,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-02 23:12:25,358 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 3.0784313725490198) internal successors, (157), 52 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) Word has length 79 [2021-11-02 23:12:25,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:25,359 INFO L225 Difference]: With dead ends: 190 [2021-11-02 23:12:25,359 INFO L226 Difference]: Without dead ends: 189 [2021-11-02 23:12:25,360 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1216 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=737, Invalid=2923, Unknown=0, NotChecked=0, Total=3660 [2021-11-02 23:12:25,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-02 23:12:25,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2021-11-02 23:12:25,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 181 states have (on average 1.0552486187845305) internal successors, (191), 184 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:25,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 191 transitions. [2021-11-02 23:12:25,367 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 191 transitions. Word has length 79 [2021-11-02 23:12:25,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:25,368 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 191 transitions. [2021-11-02 23:12:25,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 3.0784313725490198) internal successors, (157), 52 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) [2021-11-02 23:12:25,368 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 191 transitions. [2021-11-02 23:12:25,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 23:12:25,369 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:25,370 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1] [2021-11-02 23:12:25,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-11-02 23:12:25,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-02 23:12:25,575 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:25,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:25,576 INFO L85 PathProgramCache]: Analyzing trace with hash -567188766, now seen corresponding path program 7 times [2021-11-02 23:12:25,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:25,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61253166] [2021-11-02 23:12:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:25,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:25,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:25,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61253166] [2021-11-02 23:12:25,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61253166] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:25,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786774441] [2021-11-02 23:12:25,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 23:12:25,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:25,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:25,978 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:25,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-02 23:12:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:27,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-02 23:12:27,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:28,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786774441] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:28,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:28,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2021-11-02 23:12:28,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750182041] [2021-11-02 23:12:28,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-02 23:12:28,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:28,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-02 23:12:28,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=2211, Unknown=0, NotChecked=0, Total=2652 [2021-11-02 23:12:28,211 INFO L87 Difference]: Start difference. First operand 185 states and 191 transitions. Second operand has 52 states, 51 states have (on average 3.156862745098039) internal successors, (161), 52 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) [2021-11-02 23:12:28,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:28,748 INFO L93 Difference]: Finished difference Result 189 states and 195 transitions. [2021-11-02 23:12:28,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-02 23:12:28,748 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 3.156862745098039) internal successors, (161), 52 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) Word has length 81 [2021-11-02 23:12:28,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:28,750 INFO L225 Difference]: With dead ends: 189 [2021-11-02 23:12:28,750 INFO L226 Difference]: Without dead ends: 188 [2021-11-02 23:12:28,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=974, Invalid=3582, Unknown=0, NotChecked=0, Total=4556 [2021-11-02 23:12:28,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-02 23:12:28,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2021-11-02 23:12:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 183 states have (on average 1.0546448087431695) internal successors, (193), 186 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) [2021-11-02 23:12:28,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 193 transitions. [2021-11-02 23:12:28,758 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 193 transitions. Word has length 81 [2021-11-02 23:12:28,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:28,759 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 193 transitions. [2021-11-02 23:12:28,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 3.156862745098039) internal successors, (161), 52 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) [2021-11-02 23:12:28,759 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 193 transitions. [2021-11-02 23:12:28,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 23:12:28,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:28,760 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1] [2021-11-02 23:12:28,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-02 23:12:28,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-11-02 23:12:28,986 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:28,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:28,986 INFO L85 PathProgramCache]: Analyzing trace with hash -33502791, now seen corresponding path program 6 times [2021-11-02 23:12:28,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:28,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454304362] [2021-11-02 23:12:28,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:28,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:29,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:29,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454304362] [2021-11-02 23:12:29,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454304362] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:29,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567137590] [2021-11-02 23:12:29,377 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:12:29,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:29,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:29,378 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:29,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-02 23:12:30,428 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-02 23:12:30,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:12:30,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-02 23:12:30,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:31,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567137590] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:31,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:31,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2021-11-02 23:12:31,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495382939] [2021-11-02 23:12:31,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-02 23:12:31,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:31,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-02 23:12:31,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=580, Invalid=2726, Unknown=0, NotChecked=0, Total=3306 [2021-11-02 23:12:31,430 INFO L87 Difference]: Start difference. First operand 187 states and 193 transitions. Second operand has 58 states, 57 states have (on average 2.8947368421052633) internal successors, (165), 58 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:32,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:32,020 INFO L93 Difference]: Finished difference Result 188 states and 193 transitions. [2021-11-02 23:12:32,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-02 23:12:32,025 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.8947368421052633) internal successors, (165), 58 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-02 23:12:32,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:32,026 INFO L225 Difference]: With dead ends: 188 [2021-11-02 23:12:32,026 INFO L226 Difference]: Without dead ends: 187 [2021-11-02 23:12:32,027 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1798 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1145, Invalid=4111, Unknown=0, NotChecked=0, Total=5256 [2021-11-02 23:12:32,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-02 23:12:32,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-11-02 23:12:32,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 183 states have (on average 1.0491803278688525) internal successors, (192), 186 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) [2021-11-02 23:12:32,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 192 transitions. [2021-11-02 23:12:32,036 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 192 transitions. Word has length 83 [2021-11-02 23:12:32,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:32,037 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 192 transitions. [2021-11-02 23:12:32,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.8947368421052633) internal successors, (165), 58 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:32,038 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 192 transitions. [2021-11-02 23:12:32,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 23:12:32,039 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:32,039 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1] [2021-11-02 23:12:32,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-02 23:12:32,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-02 23:12:32,254 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:32,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:32,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1649172345, now seen corresponding path program 6 times [2021-11-02 23:12:32,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:32,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960691843] [2021-11-02 23:12:32,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:32,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:32,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:32,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960691843] [2021-11-02 23:12:32,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960691843] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:32,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132354771] [2021-11-02 23:12:32,775 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:12:32,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:32,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:32,778 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:32,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-02 23:12:33,931 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-02 23:12:33,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:12:33,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-02 23:12:33,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:35,073 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:35,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132354771] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:35,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:35,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 58 [2021-11-02 23:12:35,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920950888] [2021-11-02 23:12:35,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-11-02 23:12:35,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:35,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-11-02 23:12:35,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=2811, Unknown=0, NotChecked=0, Total=3422 [2021-11-02 23:12:35,075 INFO L87 Difference]: Start difference. First operand 187 states and 192 transitions. Second operand has 59 states, 58 states have (on average 2.913793103448276) internal successors, (169), 59 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:35,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:35,625 INFO L93 Difference]: Finished difference Result 189 states and 193 transitions. [2021-11-02 23:12:35,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-02 23:12:35,626 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.913793103448276) internal successors, (169), 59 states have internal predecessors, (169), 0 states have call successors, (0), 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 86 [2021-11-02 23:12:35,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:35,628 INFO L225 Difference]: With dead ends: 189 [2021-11-02 23:12:35,628 INFO L226 Difference]: Without dead ends: 188 [2021-11-02 23:12:35,630 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1191, Invalid=4211, Unknown=0, NotChecked=0, Total=5402 [2021-11-02 23:12:35,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-02 23:12:35,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2021-11-02 23:12:35,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 183 states have (on average 1.0437158469945356) internal successors, (191), 186 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:35,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 191 transitions. [2021-11-02 23:12:35,638 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 191 transitions. Word has length 86 [2021-11-02 23:12:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:35,639 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 191 transitions. [2021-11-02 23:12:35,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.913793103448276) internal successors, (169), 59 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:35,639 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 191 transitions. [2021-11-02 23:12:35,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 23:12:35,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:35,641 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1] [2021-11-02 23:12:35,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-11-02 23:12:35,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-02 23:12:35,854 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:35,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:35,854 INFO L85 PathProgramCache]: Analyzing trace with hash -114634705, now seen corresponding path program 8 times [2021-11-02 23:12:35,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:35,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142629550] [2021-11-02 23:12:35,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:35,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:36,102 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:36,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:36,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142629550] [2021-11-02 23:12:36,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142629550] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:36,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655427448] [2021-11-02 23:12:36,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:12:36,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:36,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:36,105 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:36,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-02 23:12:37,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:12:37,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:12:37,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-02 23:12:37,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:37,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655427448] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:37,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:37,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-11-02 23:12:37,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664370067] [2021-11-02 23:12:37,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 23:12:37,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:37,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 23:12:37,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-02 23:12:37,651 INFO L87 Difference]: Start difference. First operand 187 states and 191 transitions. Second operand has 22 states, 21 states have (on average 4.476190476190476) internal successors, (94), 22 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) [2021-11-02 23:12:37,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:37,797 INFO L93 Difference]: Finished difference Result 208 states and 213 transitions. [2021-11-02 23:12:37,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 23:12:37,800 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.476190476190476) internal successors, (94), 22 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 87 [2021-11-02 23:12:37,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:37,802 INFO L225 Difference]: With dead ends: 208 [2021-11-02 23:12:37,802 INFO L226 Difference]: Without dead ends: 207 [2021-11-02 23:12:37,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=277, Invalid=653, Unknown=0, NotChecked=0, Total=930 [2021-11-02 23:12:37,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-02 23:12:37,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 203. [2021-11-02 23:12:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 199 states have (on average 1.050251256281407) internal successors, (209), 202 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 209 transitions. [2021-11-02 23:12:37,811 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 209 transitions. Word has length 87 [2021-11-02 23:12:37,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:37,812 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 209 transitions. [2021-11-02 23:12:37,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.476190476190476) internal successors, (94), 22 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) [2021-11-02 23:12:37,812 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 209 transitions. [2021-11-02 23:12:37,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 23:12:37,813 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:37,813 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1] [2021-11-02 23:12:37,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-11-02 23:12:38,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-11-02 23:12:38,031 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:38,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:38,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1505199921, now seen corresponding path program 8 times [2021-11-02 23:12:38,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:38,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019431608] [2021-11-02 23:12:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:38,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:38,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:38,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019431608] [2021-11-02 23:12:38,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019431608] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:38,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539607446] [2021-11-02 23:12:38,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:12:38,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:38,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:38,417 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:38,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-02 23:12:39,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:12:39,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:12:39,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-02 23:12:39,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:40,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539607446] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:40,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:40,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2021-11-02 23:12:40,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427685935] [2021-11-02 23:12:40,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-02 23:12:40,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:40,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-02 23:12:40,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=2770, Unknown=0, NotChecked=0, Total=3306 [2021-11-02 23:12:40,598 INFO L87 Difference]: Start difference. First operand 203 states and 209 transitions. Second operand has 58 states, 57 states have (on average 3.1052631578947367) internal successors, (177), 58 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) [2021-11-02 23:12:41,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:41,069 INFO L93 Difference]: Finished difference Result 212 states and 217 transitions. [2021-11-02 23:12:41,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 23:12:41,070 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.1052631578947367) internal successors, (177), 58 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) Word has length 89 [2021-11-02 23:12:41,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:41,072 INFO L225 Difference]: With dead ends: 212 [2021-11-02 23:12:41,072 INFO L226 Difference]: Without dead ends: 211 [2021-11-02 23:12:41,073 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=900, Invalid=3656, Unknown=0, NotChecked=0, Total=4556 [2021-11-02 23:12:41,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-02 23:12:41,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2021-11-02 23:12:41,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 203 states have (on average 1.0492610837438423) internal successors, (213), 206 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) [2021-11-02 23:12:41,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 213 transitions. [2021-11-02 23:12:41,084 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 213 transitions. Word has length 89 [2021-11-02 23:12:41,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:41,084 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 213 transitions. [2021-11-02 23:12:41,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.1052631578947367) internal successors, (177), 58 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) [2021-11-02 23:12:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 213 transitions. [2021-11-02 23:12:41,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 23:12:41,086 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:41,086 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1] [2021-11-02 23:12:41,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-02 23:12:41,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:41,305 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:41,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:41,305 INFO L85 PathProgramCache]: Analyzing trace with hash -906852813, now seen corresponding path program 8 times [2021-11-02 23:12:41,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:41,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770161086] [2021-11-02 23:12:41,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:41,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:41,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:41,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770161086] [2021-11-02 23:12:41,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770161086] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:41,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295134215] [2021-11-02 23:12:41,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:12:41,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:41,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:41,790 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:41,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-02 23:12:43,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:12:43,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:12:43,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-02 23:12:43,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:44,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295134215] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:44,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:44,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2021-11-02 23:12:44,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213856157] [2021-11-02 23:12:44,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-02 23:12:44,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:44,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-02 23:12:44,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=2770, Unknown=0, NotChecked=0, Total=3306 [2021-11-02 23:12:44,241 INFO L87 Difference]: Start difference. First operand 207 states and 213 transitions. Second operand has 58 states, 57 states have (on average 3.175438596491228) internal successors, (181), 58 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:44,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:44,957 INFO L93 Difference]: Finished difference Result 211 states and 217 transitions. [2021-11-02 23:12:44,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-02 23:12:44,957 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.175438596491228) internal successors, (181), 58 states have internal predecessors, (181), 0 states have call successors, (0), 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 91 [2021-11-02 23:12:44,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:44,959 INFO L225 Difference]: With dead ends: 211 [2021-11-02 23:12:44,959 INFO L226 Difference]: Without dead ends: 210 [2021-11-02 23:12:44,962 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1227, Invalid=4625, Unknown=0, NotChecked=0, Total=5852 [2021-11-02 23:12:44,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-02 23:12:44,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2021-11-02 23:12:44,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 205 states have (on average 1.048780487804878) internal successors, (215), 208 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) [2021-11-02 23:12:44,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 215 transitions. [2021-11-02 23:12:44,972 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 215 transitions. Word has length 91 [2021-11-02 23:12:44,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:44,972 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 215 transitions. [2021-11-02 23:12:44,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.175438596491228) internal successors, (181), 58 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:44,973 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 215 transitions. [2021-11-02 23:12:44,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-02 23:12:44,974 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:44,974 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1] [2021-11-02 23:12:45,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-02 23:12:45,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:45,202 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:45,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:45,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1183409754, now seen corresponding path program 7 times [2021-11-02 23:12:45,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:45,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489641548] [2021-11-02 23:12:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:45,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:45,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:45,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489641548] [2021-11-02 23:12:45,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489641548] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:45,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132224374] [2021-11-02 23:12:45,746 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 23:12:45,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:45,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:45,747 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:45,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-02 23:12:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:47,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 23:12:47,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:48,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132224374] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:48,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:48,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2021-11-02 23:12:48,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059815156] [2021-11-02 23:12:48,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-02 23:12:48,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:48,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-02 23:12:48,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=735, Invalid=3555, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 23:12:48,501 INFO L87 Difference]: Start difference. First operand 209 states and 215 transitions. Second operand has 66 states, 65 states have (on average 2.9076923076923076) internal successors, (189), 66 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:49,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:49,160 INFO L93 Difference]: Finished difference Result 210 states and 215 transitions. [2021-11-02 23:12:49,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-02 23:12:49,160 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 2.9076923076923076) internal successors, (189), 66 states have internal predecessors, (189), 0 states have call successors, (0), 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 95 [2021-11-02 23:12:49,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:49,161 INFO L225 Difference]: With dead ends: 210 [2021-11-02 23:12:49,162 INFO L226 Difference]: Without dead ends: 209 [2021-11-02 23:12:49,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2367 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1460, Invalid=5346, Unknown=0, NotChecked=0, Total=6806 [2021-11-02 23:12:49,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-02 23:12:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-11-02 23:12:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 205 states have (on average 1.0439024390243903) internal successors, (214), 208 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 214 transitions. [2021-11-02 23:12:49,171 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 214 transitions. Word has length 95 [2021-11-02 23:12:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:49,172 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 214 transitions. [2021-11-02 23:12:49,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 2.9076923076923076) internal successors, (189), 66 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 214 transitions. [2021-11-02 23:12:49,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 23:12:49,173 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:49,174 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1] [2021-11-02 23:12:49,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-11-02 23:12:49,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:49,388 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:49,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:49,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2028047680, now seen corresponding path program 9 times [2021-11-02 23:12:49,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:49,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399419741] [2021-11-02 23:12:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:49,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:49,639 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:49,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:49,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399419741] [2021-11-02 23:12:49,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399419741] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:49,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790341260] [2021-11-02 23:12:49,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:12:49,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:49,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:49,641 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:49,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-02 23:12:51,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-02 23:12:51,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:12:51,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 23:12:51,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 206 proven. 45 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 23:12:51,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790341260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:51,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:51,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 10] total 30 [2021-11-02 23:12:51,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761813567] [2021-11-02 23:12:51,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-02 23:12:51,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:51,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-02 23:12:51,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=759, Unknown=0, NotChecked=0, Total=930 [2021-11-02 23:12:51,615 INFO L87 Difference]: Start difference. First operand 209 states and 214 transitions. Second operand has 31 states, 30 states have (on average 4.833333333333333) internal successors, (145), 31 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:53,002 INFO L93 Difference]: Finished difference Result 238 states and 246 transitions. [2021-11-02 23:12:53,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-02 23:12:53,006 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.833333333333333) internal successors, (145), 31 states have internal predecessors, (145), 0 states have call successors, (0), 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 [2021-11-02 23:12:53,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:53,008 INFO L225 Difference]: With dead ends: 238 [2021-11-02 23:12:53,008 INFO L226 Difference]: Without dead ends: 237 [2021-11-02 23:12:53,009 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1099, Invalid=3191, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 23:12:53,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-02 23:12:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 208. [2021-11-02 23:12:53,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 205 states have (on average 1.0341463414634147) internal successors, (212), 207 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) [2021-11-02 23:12:53,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 212 transitions. [2021-11-02 23:12:53,019 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 212 transitions. Word has length 97 [2021-11-02 23:12:53,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:53,020 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 212 transitions. [2021-11-02 23:12:53,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.833333333333333) internal successors, (145), 31 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:53,020 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 212 transitions. [2021-11-02 23:12:53,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 23:12:53,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:53,021 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1] [2021-11-02 23:12:53,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-02 23:12:53,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-11-02 23:12:53,237 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:53,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:53,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1868354182, now seen corresponding path program 7 times [2021-11-02 23:12:53,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:53,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734156164] [2021-11-02 23:12:53,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:53,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:53,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:53,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734156164] [2021-11-02 23:12:53,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734156164] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:53,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356645830] [2021-11-02 23:12:53,786 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 23:12:53,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:53,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:53,788 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:53,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-02 23:12:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:55,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-02 23:12:55,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:12:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:56,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356645830] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:56,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:12:56,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-02 23:12:56,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246233738] [2021-11-02 23:12:56,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-11-02 23:12:56,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:12:56,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-11-02 23:12:56,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=770, Invalid=3652, Unknown=0, NotChecked=0, Total=4422 [2021-11-02 23:12:56,644 INFO L87 Difference]: Start difference. First operand 208 states and 212 transitions. Second operand has 67 states, 66 states have (on average 2.9242424242424243) internal successors, (193), 67 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) [2021-11-02 23:12:57,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:12:57,273 INFO L93 Difference]: Finished difference Result 210 states and 213 transitions. [2021-11-02 23:12:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-02 23:12:57,273 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.9242424242424243) internal successors, (193), 67 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-02 23:12:57,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:12:57,274 INFO L225 Difference]: With dead ends: 210 [2021-11-02 23:12:57,274 INFO L226 Difference]: Without dead ends: 209 [2021-11-02 23:12:57,275 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1512, Invalid=5460, Unknown=0, NotChecked=0, Total=6972 [2021-11-02 23:12:57,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-02 23:12:57,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2021-11-02 23:12:57,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 205 states have (on average 1.0292682926829269) internal successors, (211), 207 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:12:57,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 211 transitions. [2021-11-02 23:12:57,282 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 211 transitions. Word has length 98 [2021-11-02 23:12:57,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:12:57,283 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 211 transitions. [2021-11-02 23:12:57,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.9242424242424243) internal successors, (193), 67 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) [2021-11-02 23:12:57,283 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 211 transitions. [2021-11-02 23:12:57,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-02 23:12:57,284 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:12:57,284 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1] [2021-11-02 23:12:57,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-02 23:12:57,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-11-02 23:12:57,499 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:12:57,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:12:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash 961333634, now seen corresponding path program 9 times [2021-11-02 23:12:57,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:12:57,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987888064] [2021-11-02 23:12:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:12:57,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:12:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:12:58,010 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:12:58,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:12:58,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987888064] [2021-11-02 23:12:58,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987888064] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:12:58,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640689299] [2021-11-02 23:12:58,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:12:58,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:12:58,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:12:58,012 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:12:58,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-02 23:12:59,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-02 23:12:59,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:12:59,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-02 23:12:59,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:13:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:00,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640689299] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:00,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:13:00,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2021-11-02 23:13:00,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402052168] [2021-11-02 23:13:00,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-02 23:13:00,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:00,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-02 23:13:00,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=640, Invalid=3392, Unknown=0, NotChecked=0, Total=4032 [2021-11-02 23:13:00,669 INFO L87 Difference]: Start difference. First operand 208 states and 211 transitions. Second operand has 64 states, 63 states have (on average 3.126984126984127) internal successors, (197), 64 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) [2021-11-02 23:13:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:01,037 INFO L93 Difference]: Finished difference Result 233 states and 237 transitions. [2021-11-02 23:13:01,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-02 23:13:01,046 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 3.126984126984127) internal successors, (197), 64 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) Word has length 99 [2021-11-02 23:13:01,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:01,048 INFO L225 Difference]: With dead ends: 233 [2021-11-02 23:13:01,048 INFO L226 Difference]: Without dead ends: 232 [2021-11-02 23:13:01,049 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1900 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1079, Invalid=4471, Unknown=0, NotChecked=0, Total=5550 [2021-11-02 23:13:01,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-02 23:13:01,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 228. [2021-11-02 23:13:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 225 states have (on average 1.0355555555555556) internal successors, (233), 227 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) [2021-11-02 23:13:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 233 transitions. [2021-11-02 23:13:01,057 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 233 transitions. Word has length 99 [2021-11-02 23:13:01,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:01,058 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 233 transitions. [2021-11-02 23:13:01,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 3.126984126984127) internal successors, (197), 64 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) [2021-11-02 23:13:01,058 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 233 transitions. [2021-11-02 23:13:01,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-02 23:13:01,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:01,060 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1] [2021-11-02 23:13:01,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-11-02 23:13:01,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:01,282 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:13:01,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:01,283 INFO L85 PathProgramCache]: Analyzing trace with hash 423655492, now seen corresponding path program 9 times [2021-11-02 23:13:01,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:01,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959060273] [2021-11-02 23:13:01,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:01,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:01,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:01,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959060273] [2021-11-02 23:13:01,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959060273] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:01,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802025546] [2021-11-02 23:13:01,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:13:01,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:01,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:01,703 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:13:01,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-02 23:13:03,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-02 23:13:03,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:13:03,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-02 23:13:03,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:13:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:04,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802025546] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:04,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:13:04,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2021-11-02 23:13:04,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324882515] [2021-11-02 23:13:04,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-02 23:13:04,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:04,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-02 23:13:04,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=640, Invalid=3392, Unknown=0, NotChecked=0, Total=4032 [2021-11-02 23:13:04,343 INFO L87 Difference]: Start difference. First operand 228 states and 233 transitions. Second operand has 64 states, 63 states have (on average 3.1904761904761907) internal successors, (201), 64 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:05,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:05,045 INFO L93 Difference]: Finished difference Result 232 states and 237 transitions. [2021-11-02 23:13:05,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-02 23:13:05,046 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 3.1904761904761907) internal successors, (201), 64 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-02 23:13:05,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:05,047 INFO L225 Difference]: With dead ends: 232 [2021-11-02 23:13:05,048 INFO L226 Difference]: Without dead ends: 231 [2021-11-02 23:13:05,048 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2246 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1453, Invalid=5519, Unknown=0, NotChecked=0, Total=6972 [2021-11-02 23:13:05,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-02 23:13:05,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2021-11-02 23:13:05,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 227 states have (on average 1.0352422907488987) internal successors, (235), 229 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:05,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 235 transitions. [2021-11-02 23:13:05,060 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 235 transitions. Word has length 101 [2021-11-02 23:13:05,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:05,060 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 235 transitions. [2021-11-02 23:13:05,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 3.1904761904761907) internal successors, (201), 64 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:05,061 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 235 transitions. [2021-11-02 23:13:05,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 23:13:05,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:05,062 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1] [2021-11-02 23:13:05,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-11-02 23:13:05,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:05,282 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:13:05,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:05,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1359286765, now seen corresponding path program 8 times [2021-11-02 23:13:05,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:05,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500289009] [2021-11-02 23:13:05,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:05,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:05,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:05,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500289009] [2021-11-02 23:13:05,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500289009] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:05,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730030907] [2021-11-02 23:13:05,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:13:05,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:05,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:05,937 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:13:05,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-02 23:13:07,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:13:07,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:13:07,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-02 23:13:07,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:13:08,738 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:08,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730030907] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:08,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:13:08,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 73 [2021-11-02 23:13:08,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140638012] [2021-11-02 23:13:08,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-11-02 23:13:08,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:08,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-11-02 23:13:08,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=908, Invalid=4494, Unknown=0, NotChecked=0, Total=5402 [2021-11-02 23:13:08,741 INFO L87 Difference]: Start difference. First operand 230 states and 235 transitions. Second operand has 74 states, 73 states have (on average 2.9178082191780823) internal successors, (213), 74 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) [2021-11-02 23:13:09,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:09,334 INFO L93 Difference]: Finished difference Result 231 states and 235 transitions. [2021-11-02 23:13:09,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-02 23:13:09,334 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 2.9178082191780823) internal successors, (213), 74 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) Word has length 107 [2021-11-02 23:13:09,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:09,335 INFO L225 Difference]: With dead ends: 231 [2021-11-02 23:13:09,336 INFO L226 Difference]: Without dead ends: 230 [2021-11-02 23:13:09,336 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3014 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1813, Invalid=6743, Unknown=0, NotChecked=0, Total=8556 [2021-11-02 23:13:09,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-02 23:13:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-11-02 23:13:09,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 227 states have (on average 1.0308370044052864) internal successors, (234), 229 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:09,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 234 transitions. [2021-11-02 23:13:09,345 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 234 transitions. Word has length 107 [2021-11-02 23:13:09,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:09,345 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 234 transitions. [2021-11-02 23:13:09,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 2.9178082191780823) internal successors, (213), 74 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) [2021-11-02 23:13:09,346 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 234 transitions. [2021-11-02 23:13:09,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-02 23:13:09,347 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:09,347 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1] [2021-11-02 23:13:09,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-02 23:13:09,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-02 23:13:09,567 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:13:09,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:09,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1964251795, now seen corresponding path program 10 times [2021-11-02 23:13:09,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:09,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657746746] [2021-11-02 23:13:09,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:09,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:10,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:10,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657746746] [2021-11-02 23:13:10,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657746746] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:10,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963319248] [2021-11-02 23:13:10,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:13:10,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:10,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:10,039 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:13:10,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-02 23:13:11,490 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:13:11,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:13:11,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-02 23:13:11,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:13:12,862 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:12,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963319248] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:12,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:13:12,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 69 [2021-11-02 23:13:12,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452443566] [2021-11-02 23:13:12,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-11-02 23:13:12,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:12,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-11-02 23:13:12,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=753, Invalid=4077, Unknown=0, NotChecked=0, Total=4830 [2021-11-02 23:13:12,864 INFO L87 Difference]: Start difference. First operand 230 states and 234 transitions. Second operand has 70 states, 69 states have (on average 3.1449275362318843) internal successors, (217), 70 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) [2021-11-02 23:13:13,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:13,232 INFO L93 Difference]: Finished difference Result 256 states and 260 transitions. [2021-11-02 23:13:13,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-02 23:13:13,232 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 3.1449275362318843) internal successors, (217), 70 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) Word has length 109 [2021-11-02 23:13:13,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:13,234 INFO L225 Difference]: With dead ends: 256 [2021-11-02 23:13:13,234 INFO L226 Difference]: Without dead ends: 255 [2021-11-02 23:13:13,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2299 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1274, Invalid=5368, Unknown=0, NotChecked=0, Total=6642 [2021-11-02 23:13:13,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-02 23:13:13,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 250. [2021-11-02 23:13:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 247 states have (on average 1.0364372469635628) internal successors, (256), 249 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:13,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 256 transitions. [2021-11-02 23:13:13,243 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 256 transitions. Word has length 109 [2021-11-02 23:13:13,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:13,244 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 256 transitions. [2021-11-02 23:13:13,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 3.1449275362318843) internal successors, (217), 70 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) [2021-11-02 23:13:13,244 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 256 transitions. [2021-11-02 23:13:13,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-02 23:13:13,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:13,245 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1] [2021-11-02 23:13:13,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-11-02 23:13:13,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:13,458 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:13:13,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:13,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1560287763, now seen corresponding path program 8 times [2021-11-02 23:13:13,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:13,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762827270] [2021-11-02 23:13:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:13,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 0 proven. 424 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:14,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:14,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762827270] [2021-11-02 23:13:14,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762827270] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:14,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797117101] [2021-11-02 23:13:14,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:13:14,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:14,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:14,140 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:13:14,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-02 23:13:15,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:13:15,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:13:15,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-02 23:13:15,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:13:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 0 proven. 424 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:17,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797117101] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:17,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:13:17,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 74 [2021-11-02 23:13:17,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856037688] [2021-11-02 23:13:17,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-11-02 23:13:17,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:17,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-11-02 23:13:17,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=947, Invalid=4603, Unknown=0, NotChecked=0, Total=5550 [2021-11-02 23:13:17,015 INFO L87 Difference]: Start difference. First operand 250 states and 256 transitions. Second operand has 75 states, 74 states have (on average 2.9324324324324325) internal successors, (217), 75 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) [2021-11-02 23:13:17,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:17,651 INFO L93 Difference]: Finished difference Result 251 states and 256 transitions. [2021-11-02 23:13:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-02 23:13:17,651 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 2.9324324324324325) internal successors, (217), 75 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) Word has length 110 [2021-11-02 23:13:17,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:17,653 INFO L225 Difference]: With dead ends: 251 [2021-11-02 23:13:17,653 INFO L226 Difference]: Without dead ends: 250 [2021-11-02 23:13:17,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3067 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1871, Invalid=6871, Unknown=0, NotChecked=0, Total=8742 [2021-11-02 23:13:17,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-02 23:13:17,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2021-11-02 23:13:17,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 247 states have (on average 1.0323886639676114) internal successors, (255), 249 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:17,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 255 transitions. [2021-11-02 23:13:17,662 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 255 transitions. Word has length 110 [2021-11-02 23:13:17,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:17,662 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 255 transitions. [2021-11-02 23:13:17,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 2.9324324324324325) internal successors, (217), 75 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) [2021-11-02 23:13:17,663 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 255 transitions. [2021-11-02 23:13:17,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 23:13:17,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:17,664 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1] [2021-11-02 23:13:17,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-02 23:13:17,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-11-02 23:13:17,864 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:13:17,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:17,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2139633387, now seen corresponding path program 10 times [2021-11-02 23:13:17,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:17,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058866737] [2021-11-02 23:13:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:17,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 0 proven. 530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:18,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:18,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058866737] [2021-11-02 23:13:18,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058866737] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:18,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122776939] [2021-11-02 23:13:18,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:13:18,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:18,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:18,435 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:13:18,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-02 23:13:20,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:13:20,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:13:20,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-02 23:13:20,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:13:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 0 proven. 530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:21,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122776939] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:21,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:13:21,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 69 [2021-11-02 23:13:21,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103102340] [2021-11-02 23:13:21,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-11-02 23:13:21,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:21,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-11-02 23:13:21,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=753, Invalid=4077, Unknown=0, NotChecked=0, Total=4830 [2021-11-02 23:13:21,696 INFO L87 Difference]: Start difference. First operand 250 states and 255 transitions. Second operand has 70 states, 69 states have (on average 3.2028985507246377) internal successors, (221), 70 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:22,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:22,393 INFO L93 Difference]: Finished difference Result 254 states and 259 transitions. [2021-11-02 23:13:22,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-02 23:13:22,394 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 3.2028985507246377) internal successors, (221), 70 states have internal predecessors, (221), 0 states have call successors, (0), 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 111 [2021-11-02 23:13:22,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:22,395 INFO L225 Difference]: With dead ends: 254 [2021-11-02 23:13:22,395 INFO L226 Difference]: Without dead ends: 253 [2021-11-02 23:13:22,396 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2789 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1758, Invalid=6798, Unknown=0, NotChecked=0, Total=8556 [2021-11-02 23:13:22,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-02 23:13:22,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2021-11-02 23:13:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 249 states have (on average 1.0321285140562249) internal successors, (257), 251 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:22,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 257 transitions. [2021-11-02 23:13:22,404 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 257 transitions. Word has length 111 [2021-11-02 23:13:22,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:22,405 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 257 transitions. [2021-11-02 23:13:22,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 3.2028985507246377) internal successors, (221), 70 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:22,405 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 257 transitions. [2021-11-02 23:13:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-02 23:13:22,406 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:22,407 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1] [2021-11-02 23:13:22,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-11-02 23:13:22,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:22,626 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:13:22,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:22,626 INFO L85 PathProgramCache]: Analyzing trace with hash 174786304, now seen corresponding path program 9 times [2021-11-02 23:13:22,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:22,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008118226] [2021-11-02 23:13:22,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:22,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:23,259 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 504 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:23,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:23,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008118226] [2021-11-02 23:13:23,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008118226] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:23,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998223579] [2021-11-02 23:13:23,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:13:23,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:23,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:23,269 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:13:23,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-02 23:13:24,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-02 23:13:24,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:13:24,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-02 23:13:24,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:13:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 0 proven. 504 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:26,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998223579] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:26,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:13:26,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 81 [2021-11-02 23:13:26,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599789054] [2021-11-02 23:13:26,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-11-02 23:13:26,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:26,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-11-02 23:13:26,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1099, Invalid=5543, Unknown=0, NotChecked=0, Total=6642 [2021-11-02 23:13:26,528 INFO L87 Difference]: Start difference. First operand 252 states and 257 transitions. Second operand has 82 states, 81 states have (on average 2.925925925925926) internal successors, (237), 82 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) [2021-11-02 23:13:27,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:27,296 INFO L93 Difference]: Finished difference Result 253 states and 257 transitions. [2021-11-02 23:13:27,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-02 23:13:27,296 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.925925925925926) internal successors, (237), 82 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) Word has length 119 [2021-11-02 23:13:27,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:27,298 INFO L225 Difference]: With dead ends: 253 [2021-11-02 23:13:27,298 INFO L226 Difference]: Without dead ends: 252 [2021-11-02 23:13:27,299 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3743 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2204, Invalid=8302, Unknown=0, NotChecked=0, Total=10506 [2021-11-02 23:13:27,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-02 23:13:27,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-11-02 23:13:27,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 249 states have (on average 1.0281124497991967) internal successors, (256), 251 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:27,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 256 transitions. [2021-11-02 23:13:27,308 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 256 transitions. Word has length 119 [2021-11-02 23:13:27,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:27,308 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 256 transitions. [2021-11-02 23:13:27,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 2.925925925925926) internal successors, (237), 82 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) [2021-11-02 23:13:27,309 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 256 transitions. [2021-11-02 23:13:27,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-02 23:13:27,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:27,310 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1] [2021-11-02 23:13:27,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-11-02 23:13:27,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:27,526 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:13:27,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:27,526 INFO L85 PathProgramCache]: Analyzing trace with hash 601492068, now seen corresponding path program 11 times [2021-11-02 23:13:27,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:27,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012593095] [2021-11-02 23:13:27,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:27,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:28,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:28,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012593095] [2021-11-02 23:13:28,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012593095] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:28,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304719968] [2021-11-02 23:13:28,140 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:13:28,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:28,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:28,164 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:13:28,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-02 23:13:29,906 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-02 23:13:29,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:13:29,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-02 23:13:29,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:13:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:31,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304719968] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:31,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:13:31,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2021-11-02 23:13:31,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530709530] [2021-11-02 23:13:31,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-11-02 23:13:31,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:31,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-11-02 23:13:31,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=875, Invalid=4825, Unknown=0, NotChecked=0, Total=5700 [2021-11-02 23:13:31,430 INFO L87 Difference]: Start difference. First operand 252 states and 256 transitions. Second operand has 76 states, 75 states have (on average 3.16) internal successors, (237), 76 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) [2021-11-02 23:13:31,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:31,851 INFO L93 Difference]: Finished difference Result 278 states and 282 transitions. [2021-11-02 23:13:31,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-02 23:13:31,852 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 3.16) internal successors, (237), 76 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) Word has length 119 [2021-11-02 23:13:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:31,853 INFO L225 Difference]: With dead ends: 278 [2021-11-02 23:13:31,854 INFO L226 Difference]: Without dead ends: 277 [2021-11-02 23:13:31,855 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2736 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1485, Invalid=6347, Unknown=0, NotChecked=0, Total=7832 [2021-11-02 23:13:31,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-02 23:13:31,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 272. [2021-11-02 23:13:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 269 states have (on average 1.033457249070632) internal successors, (278), 271 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:31,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 278 transitions. [2021-11-02 23:13:31,865 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 278 transitions. Word has length 119 [2021-11-02 23:13:31,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:31,866 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 278 transitions. [2021-11-02 23:13:31,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 3.16) internal successors, (237), 76 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) [2021-11-02 23:13:31,866 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 278 transitions. [2021-11-02 23:13:31,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 23:13:31,867 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:31,867 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1] [2021-11-02 23:13:31,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-11-02 23:13:32,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:32,082 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:13:32,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:32,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1786705754, now seen corresponding path program 11 times [2021-11-02 23:13:32,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:32,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994610182] [2021-11-02 23:13:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:32,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 638 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:32,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:32,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994610182] [2021-11-02 23:13:32,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994610182] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:32,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825661297] [2021-11-02 23:13:32,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:13:32,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:32,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:32,720 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:13:32,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-02 23:13:34,543 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-02 23:13:34,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:13:34,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-02 23:13:34,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:13:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 638 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:36,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825661297] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:36,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:13:36,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2021-11-02 23:13:36,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112506989] [2021-11-02 23:13:36,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-11-02 23:13:36,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:36,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-11-02 23:13:36,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=875, Invalid=4825, Unknown=0, NotChecked=0, Total=5700 [2021-11-02 23:13:36,065 INFO L87 Difference]: Start difference. First operand 272 states and 278 transitions. Second operand has 76 states, 75 states have (on average 3.2133333333333334) internal successors, (241), 76 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:36,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:36,869 INFO L93 Difference]: Finished difference Result 276 states and 282 transitions. [2021-11-02 23:13:36,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-02 23:13:36,870 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 3.2133333333333334) internal successors, (241), 76 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-02 23:13:36,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:36,871 INFO L225 Difference]: With dead ends: 276 [2021-11-02 23:13:36,871 INFO L226 Difference]: Without dead ends: 275 [2021-11-02 23:13:36,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3250 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2027, Invalid=7873, Unknown=0, NotChecked=0, Total=9900 [2021-11-02 23:13:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-02 23:13:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 274. [2021-11-02 23:13:36,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 271 states have (on average 1.033210332103321) internal successors, (280), 273 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 280 transitions. [2021-11-02 23:13:36,884 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 280 transitions. Word has length 121 [2021-11-02 23:13:36,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:36,884 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 280 transitions. [2021-11-02 23:13:36,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 3.2133333333333334) internal successors, (241), 76 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:36,885 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 280 transitions. [2021-11-02 23:13:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-02 23:13:36,886 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:36,886 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1] [2021-11-02 23:13:36,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-11-02 23:13:37,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-11-02 23:13:37,106 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:13:37,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:37,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1558481376, now seen corresponding path program 9 times [2021-11-02 23:13:37,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:37,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080696680] [2021-11-02 23:13:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:37,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:37,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:37,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080696680] [2021-11-02 23:13:37,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080696680] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:37,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226547869] [2021-11-02 23:13:37,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:13:37,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:37,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:37,780 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:13:37,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-02 23:13:39,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-02 23:13:39,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:13:39,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-02 23:13:39,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:13:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:41,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226547869] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:41,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:13:41,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 82 [2021-11-02 23:13:41,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253176910] [2021-11-02 23:13:41,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-11-02 23:13:41,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:41,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-11-02 23:13:41,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1142, Invalid=5664, Unknown=0, NotChecked=0, Total=6806 [2021-11-02 23:13:41,274 INFO L87 Difference]: Start difference. First operand 274 states and 280 transitions. Second operand has 83 states, 82 states have (on average 2.9390243902439024) internal successors, (241), 83 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:42,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:42,018 INFO L93 Difference]: Finished difference Result 275 states and 280 transitions. [2021-11-02 23:13:42,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-02 23:13:42,018 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 2.9390243902439024) internal successors, (241), 83 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-02 23:13:42,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:42,019 INFO L225 Difference]: With dead ends: 275 [2021-11-02 23:13:42,019 INFO L226 Difference]: Without dead ends: 274 [2021-11-02 23:13:42,020 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3802 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2268, Invalid=8444, Unknown=0, NotChecked=0, Total=10712 [2021-11-02 23:13:42,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-11-02 23:13:42,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-11-02 23:13:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 271 states have (on average 1.029520295202952) internal successors, (279), 273 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 279 transitions. [2021-11-02 23:13:42,029 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 279 transitions. Word has length 122 [2021-11-02 23:13:42,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:42,029 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 279 transitions. [2021-11-02 23:13:42,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 2.9390243902439024) internal successors, (241), 83 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:42,030 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 279 transitions. [2021-11-02 23:13:42,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-02 23:13:42,031 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:42,031 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1] [2021-11-02 23:13:42,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-11-02 23:13:42,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:42,253 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:13:42,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:42,253 INFO L85 PathProgramCache]: Analyzing trace with hash -235460363, now seen corresponding path program 12 times [2021-11-02 23:13:42,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:42,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133270037] [2021-11-02 23:13:42,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:42,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:42,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:42,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133270037] [2021-11-02 23:13:42,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133270037] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:42,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797042992] [2021-11-02 23:13:42,911 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:13:42,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:42,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:42,912 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:13:42,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-02 23:13:44,923 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-02 23:13:44,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:13:44,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-02 23:13:44,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:13:46,658 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:46,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797042992] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:46,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:13:46,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 81 [2021-11-02 23:13:46,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308246592] [2021-11-02 23:13:46,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-11-02 23:13:46,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:46,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-11-02 23:13:46,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1006, Invalid=5636, Unknown=0, NotChecked=0, Total=6642 [2021-11-02 23:13:46,661 INFO L87 Difference]: Start difference. First operand 274 states and 279 transitions. Second operand has 82 states, 81 states have (on average 3.1728395061728394) internal successors, (257), 82 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:47,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:47,140 INFO L93 Difference]: Finished difference Result 301 states and 305 transitions. [2021-11-02 23:13:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-02 23:13:47,140 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 3.1728395061728394) internal successors, (257), 82 states have internal predecessors, (257), 0 states have call successors, (0), 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 [2021-11-02 23:13:47,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:47,141 INFO L225 Difference]: With dead ends: 301 [2021-11-02 23:13:47,142 INFO L226 Difference]: Without dead ends: 300 [2021-11-02 23:13:47,142 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3211 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1712, Invalid=7408, Unknown=0, NotChecked=0, Total=9120 [2021-11-02 23:13:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-02 23:13:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 294. [2021-11-02 23:13:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 291 states have (on average 1.034364261168385) internal successors, (301), 293 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:47,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 301 transitions. [2021-11-02 23:13:47,152 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 301 transitions. Word has length 129 [2021-11-02 23:13:47,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:47,152 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 301 transitions. [2021-11-02 23:13:47,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 3.1728395061728394) internal successors, (257), 82 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:47,153 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 301 transitions. [2021-11-02 23:13:47,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-02 23:13:47,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:47,154 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1] [2021-11-02 23:13:47,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-11-02 23:13:47,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:47,375 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:13:47,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash -708565907, now seen corresponding path program 10 times [2021-11-02 23:13:47,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:47,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338460212] [2021-11-02 23:13:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:47,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:48,079 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:48,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:48,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338460212] [2021-11-02 23:13:48,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338460212] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:48,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814838332] [2021-11-02 23:13:48,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:13:48,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:48,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:48,080 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:13:48,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-02 23:13:50,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:13:50,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:13:50,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-02 23:13:50,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:13:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:51,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814838332] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:51,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:13:51,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 89 [2021-11-02 23:13:51,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426249429] [2021-11-02 23:13:51,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-11-02 23:13:51,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:51,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-11-02 23:13:51,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1308, Invalid=6702, Unknown=0, NotChecked=0, Total=8010 [2021-11-02 23:13:51,864 INFO L87 Difference]: Start difference. First operand 294 states and 301 transitions. Second operand has 90 states, 89 states have (on average 2.932584269662921) internal successors, (261), 90 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:52,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:52,726 INFO L93 Difference]: Finished difference Result 295 states and 301 transitions. [2021-11-02 23:13:52,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-02 23:13:52,726 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 2.932584269662921) internal successors, (261), 90 states have internal predecessors, (261), 0 states have call successors, (0), 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 131 [2021-11-02 23:13:52,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:52,728 INFO L225 Difference]: With dead ends: 295 [2021-11-02 23:13:52,728 INFO L226 Difference]: Without dead ends: 294 [2021-11-02 23:13:52,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4552 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2633, Invalid=10023, Unknown=0, NotChecked=0, Total=12656 [2021-11-02 23:13:52,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-02 23:13:52,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-11-02 23:13:52,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 291 states have (on average 1.0309278350515463) internal successors, (300), 293 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 300 transitions. [2021-11-02 23:13:52,741 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 300 transitions. Word has length 131 [2021-11-02 23:13:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:52,741 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 300 transitions. [2021-11-02 23:13:52,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 2.932584269662921) internal successors, (261), 90 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 300 transitions. [2021-11-02 23:13:52,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-02 23:13:52,743 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:52,743 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1] [2021-11-02 23:13:52,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-02 23:13:52,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-11-02 23:13:52,967 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:13:52,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:52,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1355859703, now seen corresponding path program 12 times [2021-11-02 23:13:52,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:52,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441608408] [2021-11-02 23:13:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:52,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:53,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:53,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441608408] [2021-11-02 23:13:53,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441608408] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:53,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166815095] [2021-11-02 23:13:53,555 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:13:53,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:53,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:53,558 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:13:53,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-02 23:13:55,788 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-02 23:13:55,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:13:55,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-02 23:13:55,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:13:57,464 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:57,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166815095] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:57,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:13:57,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 81 [2021-11-02 23:13:57,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079982420] [2021-11-02 23:13:57,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-11-02 23:13:57,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:13:57,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-11-02 23:13:57,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1006, Invalid=5636, Unknown=0, NotChecked=0, Total=6642 [2021-11-02 23:13:57,467 INFO L87 Difference]: Start difference. First operand 294 states and 300 transitions. Second operand has 82 states, 81 states have (on average 3.2222222222222223) internal successors, (261), 82 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:58,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:13:58,403 INFO L93 Difference]: Finished difference Result 298 states and 304 transitions. [2021-11-02 23:13:58,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-02 23:13:58,403 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 3.2222222222222223) internal successors, (261), 82 states have internal predecessors, (261), 0 states have call successors, (0), 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 131 [2021-11-02 23:13:58,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:13:58,404 INFO L225 Difference]: With dead ends: 298 [2021-11-02 23:13:58,405 INFO L226 Difference]: Without dead ends: 297 [2021-11-02 23:13:58,405 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3896 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2384, Invalid=9388, Unknown=0, NotChecked=0, Total=11772 [2021-11-02 23:13:58,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-02 23:13:58,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 296. [2021-11-02 23:13:58,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 293 states have (on average 1.030716723549488) internal successors, (302), 295 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 302 transitions. [2021-11-02 23:13:58,415 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 302 transitions. Word has length 131 [2021-11-02 23:13:58,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:13:58,415 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 302 transitions. [2021-11-02 23:13:58,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 3.2222222222222223) internal successors, (261), 82 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:13:58,416 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 302 transitions. [2021-11-02 23:13:58,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-02 23:13:58,417 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:13:58,417 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1] [2021-11-02 23:13:58,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-11-02 23:13:58,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:58,642 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:13:58,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:13:58,642 INFO L85 PathProgramCache]: Analyzing trace with hash 877386067, now seen corresponding path program 10 times [2021-11-02 23:13:58,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:13:58,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846875111] [2021-11-02 23:13:58,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:13:58,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:13:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:13:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:13:59,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:13:59,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846875111] [2021-11-02 23:13:59,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846875111] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:13:59,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243022858] [2021-11-02 23:13:59,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:13:59,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:13:59,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:59,373 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:13:59,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-02 23:14:01,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:14:01,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:14:01,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-02 23:14:01,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:14:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:03,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243022858] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:03,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:14:03,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 90 [2021-11-02 23:14:03,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480838660] [2021-11-02 23:14:03,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-11-02 23:14:03,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:14:03,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-11-02 23:14:03,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1355, Invalid=6835, Unknown=0, NotChecked=0, Total=8190 [2021-11-02 23:14:03,375 INFO L87 Difference]: Start difference. First operand 296 states and 302 transitions. Second operand has 91 states, 90 states have (on average 2.9444444444444446) internal successors, (265), 91 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:04,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:14:04,271 INFO L93 Difference]: Finished difference Result 297 states and 302 transitions. [2021-11-02 23:14:04,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-02 23:14:04,271 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 2.9444444444444446) internal successors, (265), 91 states have internal predecessors, (265), 0 states have call successors, (0), 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 [2021-11-02 23:14:04,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:14:04,272 INFO L225 Difference]: With dead ends: 297 [2021-11-02 23:14:04,272 INFO L226 Difference]: Without dead ends: 296 [2021-11-02 23:14:04,273 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4617 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2703, Invalid=10179, Unknown=0, NotChecked=0, Total=12882 [2021-11-02 23:14:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-02 23:14:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-11-02 23:14:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 293 states have (on average 1.0273037542662116) internal successors, (301), 295 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 301 transitions. [2021-11-02 23:14:04,283 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 301 transitions. Word has length 134 [2021-11-02 23:14:04,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:14:04,283 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 301 transitions. [2021-11-02 23:14:04,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 2.9444444444444446) internal successors, (265), 91 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:04,284 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 301 transitions. [2021-11-02 23:14:04,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-02 23:14:04,285 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:14:04,285 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1] [2021-11-02 23:14:04,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-11-02 23:14:04,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-11-02 23:14:04,498 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:14:04,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:14:04,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1571813818, now seen corresponding path program 13 times [2021-11-02 23:14:04,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:14:04,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649373401] [2021-11-02 23:14:04,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:14:04,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:14:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:14:05,175 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 858 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:05,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:14:05,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649373401] [2021-11-02 23:14:05,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649373401] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:05,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782597717] [2021-11-02 23:14:05,175 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 23:14:05,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:14:05,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:14:05,178 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:14:05,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-02 23:14:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:14:07,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-02 23:14:07,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:14:09,396 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 858 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:09,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782597717] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:09,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:14:09,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2021-11-02 23:14:09,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485852993] [2021-11-02 23:14:09,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-11-02 23:14:09,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:14:09,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-11-02 23:14:09,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1146, Invalid=6510, Unknown=0, NotChecked=0, Total=7656 [2021-11-02 23:14:09,399 INFO L87 Difference]: Start difference. First operand 296 states and 301 transitions. Second operand has 88 states, 87 states have (on average 3.1839080459770117) internal successors, (277), 88 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:09,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:14:09,938 INFO L93 Difference]: Finished difference Result 323 states and 327 transitions. [2021-11-02 23:14:09,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-02 23:14:09,938 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 3.1839080459770117) internal successors, (277), 88 states have internal predecessors, (277), 0 states have call successors, (0), 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 [2021-11-02 23:14:09,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:14:09,940 INFO L225 Difference]: With dead ends: 323 [2021-11-02 23:14:09,940 INFO L226 Difference]: Without dead ends: 322 [2021-11-02 23:14:09,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3724 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1955, Invalid=8551, Unknown=0, NotChecked=0, Total=10506 [2021-11-02 23:14:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-02 23:14:09,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 316. [2021-11-02 23:14:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 313 states have (on average 1.0319488817891374) internal successors, (323), 315 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 323 transitions. [2021-11-02 23:14:09,950 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 323 transitions. Word has length 139 [2021-11-02 23:14:09,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:14:09,951 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 323 transitions. [2021-11-02 23:14:09,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 3.1839080459770117) internal successors, (277), 88 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 323 transitions. [2021-11-02 23:14:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-02 23:14:09,952 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:14:09,952 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1] [2021-11-02 23:14:09,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-11-02 23:14:10,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:14:10,162 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:14:10,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:14:10,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1315410952, now seen corresponding path program 13 times [2021-11-02 23:14:10,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:14:10,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233449484] [2021-11-02 23:14:10,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:14:10,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:14:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:14:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:10,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:14:10,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233449484] [2021-11-02 23:14:10,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233449484] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:10,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441185831] [2021-11-02 23:14:10,827 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 23:14:10,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:14:10,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:14:10,827 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:14:10,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-02 23:14:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:14:13,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-02 23:14:13,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:14:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:15,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441185831] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:15,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:14:15,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2021-11-02 23:14:15,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39379169] [2021-11-02 23:14:15,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-11-02 23:14:15,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:14:15,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-11-02 23:14:15,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1146, Invalid=6510, Unknown=0, NotChecked=0, Total=7656 [2021-11-02 23:14:15,029 INFO L87 Difference]: Start difference. First operand 316 states and 323 transitions. Second operand has 88 states, 87 states have (on average 3.2298850574712645) internal successors, (281), 88 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:16,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:14:16,000 INFO L93 Difference]: Finished difference Result 320 states and 327 transitions. [2021-11-02 23:14:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-02 23:14:16,001 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 3.2298850574712645) internal successors, (281), 88 states have internal predecessors, (281), 0 states have call successors, (0), 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 141 [2021-11-02 23:14:16,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:14:16,004 INFO L225 Difference]: With dead ends: 320 [2021-11-02 23:14:16,004 INFO L226 Difference]: Without dead ends: 319 [2021-11-02 23:14:16,005 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4438 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2696, Invalid=10644, Unknown=0, NotChecked=0, Total=13340 [2021-11-02 23:14:16,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-11-02 23:14:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 318. [2021-11-02 23:14:16,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 315 states have (on average 1.0317460317460319) internal successors, (325), 317 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 325 transitions. [2021-11-02 23:14:16,021 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 325 transitions. Word has length 141 [2021-11-02 23:14:16,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:14:16,021 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 325 transitions. [2021-11-02 23:14:16,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 3.2298850574712645) internal successors, (281), 88 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:16,021 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 325 transitions. [2021-11-02 23:14:16,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-02 23:14:16,022 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:14:16,023 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1] [2021-11-02 23:14:16,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-11-02 23:14:16,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:14:16,250 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:14:16,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:14:16,250 INFO L85 PathProgramCache]: Analyzing trace with hash -920418726, now seen corresponding path program 11 times [2021-11-02 23:14:16,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:14:16,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230799479] [2021-11-02 23:14:16,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:14:16,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:14:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:14:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:17,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:14:17,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230799479] [2021-11-02 23:14:17,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230799479] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:17,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521319127] [2021-11-02 23:14:17,082 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:14:17,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:14:17,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:14:17,084 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:14:17,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-02 23:14:19,634 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-02 23:14:19,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:14:19,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-02 23:14:19,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:14:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:21,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521319127] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:21,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:14:21,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2021-11-02 23:14:21,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896526858] [2021-11-02 23:14:21,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-11-02 23:14:21,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:14:21,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-11-02 23:14:21,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1535, Invalid=7971, Unknown=0, NotChecked=0, Total=9506 [2021-11-02 23:14:21,904 INFO L87 Difference]: Start difference. First operand 318 states and 325 transitions. Second operand has 98 states, 97 states have (on average 2.9381443298969074) internal successors, (285), 98 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:22,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:14:22,940 INFO L93 Difference]: Finished difference Result 319 states and 325 transitions. [2021-11-02 23:14:22,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-02 23:14:22,940 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 2.9381443298969074) internal successors, (285), 98 states have internal predecessors, (285), 0 states have call successors, (0), 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 143 [2021-11-02 23:14:22,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:14:22,941 INFO L225 Difference]: With dead ends: 319 [2021-11-02 23:14:22,941 INFO L226 Difference]: Without dead ends: 318 [2021-11-02 23:14:22,943 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5441 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3100, Invalid=11906, Unknown=0, NotChecked=0, Total=15006 [2021-11-02 23:14:22,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-02 23:14:22,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2021-11-02 23:14:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 315 states have (on average 1.0285714285714285) internal successors, (324), 317 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 324 transitions. [2021-11-02 23:14:22,952 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 324 transitions. Word has length 143 [2021-11-02 23:14:22,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:14:22,953 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 324 transitions. [2021-11-02 23:14:22,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 2.9381443298969074) internal successors, (285), 98 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:22,953 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 324 transitions. [2021-11-02 23:14:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-02 23:14:22,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:14:22,955 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1] [2021-11-02 23:14:22,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-11-02 23:14:23,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:14:23,157 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:14:23,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:14:23,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1122986938, now seen corresponding path program 11 times [2021-11-02 23:14:23,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:14:23,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732931969] [2021-11-02 23:14:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:14:23,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:14:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:14:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 0 proven. 781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:23,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:14:23,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732931969] [2021-11-02 23:14:23,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732931969] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:23,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032447783] [2021-11-02 23:14:23,957 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:14:23,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:14:23,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:14:23,958 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:14:23,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-11-02 23:14:26,476 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-02 23:14:26,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:14:26,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-02 23:14:26,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:14:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 0 proven. 781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:28,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032447783] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:28,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:14:28,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 98 [2021-11-02 23:14:28,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713235566] [2021-11-02 23:14:28,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-11-02 23:14:28,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:14:28,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-11-02 23:14:28,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1586, Invalid=8116, Unknown=0, NotChecked=0, Total=9702 [2021-11-02 23:14:28,665 INFO L87 Difference]: Start difference. First operand 318 states and 324 transitions. Second operand has 99 states, 98 states have (on average 2.9489795918367347) internal successors, (289), 99 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:29,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:14:29,691 INFO L93 Difference]: Finished difference Result 319 states and 324 transitions. [2021-11-02 23:14:29,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 23:14:29,691 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 2.9489795918367347) internal successors, (289), 99 states have internal predecessors, (289), 0 states have call successors, (0), 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 146 [2021-11-02 23:14:29,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:14:29,692 INFO L225 Difference]: With dead ends: 319 [2021-11-02 23:14:29,692 INFO L226 Difference]: Without dead ends: 318 [2021-11-02 23:14:29,693 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5512 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3176, Invalid=12076, Unknown=0, NotChecked=0, Total=15252 [2021-11-02 23:14:29,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-02 23:14:29,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2021-11-02 23:14:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 315 states have (on average 1.0253968253968253) internal successors, (323), 317 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 323 transitions. [2021-11-02 23:14:29,700 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 323 transitions. Word has length 146 [2021-11-02 23:14:29,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:14:29,700 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 323 transitions. [2021-11-02 23:14:29,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 2.9489795918367347) internal successors, (289), 99 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:29,700 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 323 transitions. [2021-11-02 23:14:29,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-02 23:14:29,701 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:14:29,701 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1] [2021-11-02 23:14:29,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-11-02 23:14:29,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-11-02 23:14:29,902 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:14:29,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:14:29,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1330983511, now seen corresponding path program 14 times [2021-11-02 23:14:29,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:14:29,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751822640] [2021-11-02 23:14:29,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:14:29,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:14:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:14:30,764 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 0 proven. 994 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:30,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:14:30,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751822640] [2021-11-02 23:14:30,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751822640] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:30,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061411231] [2021-11-02 23:14:30,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:14:30,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:14:30,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:14:30,766 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:14:30,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-11-02 23:14:33,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:14:33,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:14:33,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-02 23:14:33,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:14:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 0 proven. 994 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:35,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061411231] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:35,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:14:35,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 93 [2021-11-02 23:14:35,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516286963] [2021-11-02 23:14:35,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-02 23:14:35,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:14:35,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-02 23:14:35,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=7447, Unknown=0, NotChecked=0, Total=8742 [2021-11-02 23:14:35,459 INFO L87 Difference]: Start difference. First operand 318 states and 323 transitions. Second operand has 94 states, 93 states have (on average 3.193548387096774) internal successors, (297), 94 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:14:36,094 INFO L93 Difference]: Finished difference Result 345 states and 349 transitions. [2021-11-02 23:14:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-02 23:14:36,095 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 3.193548387096774) internal successors, (297), 94 states have internal predecessors, (297), 0 states have call successors, (0), 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 149 [2021-11-02 23:14:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:14:36,097 INFO L225 Difference]: With dead ends: 345 [2021-11-02 23:14:36,097 INFO L226 Difference]: Without dead ends: 344 [2021-11-02 23:14:36,098 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4275 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2214, Invalid=9776, Unknown=0, NotChecked=0, Total=11990 [2021-11-02 23:14:36,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-02 23:14:36,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 338. [2021-11-02 23:14:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 335 states have (on average 1.0298507462686568) internal successors, (345), 337 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:36,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 345 transitions. [2021-11-02 23:14:36,110 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 345 transitions. Word has length 149 [2021-11-02 23:14:36,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:14:36,110 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 345 transitions. [2021-11-02 23:14:36,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 3.193548387096774) internal successors, (297), 94 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:36,110 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 345 transitions. [2021-11-02 23:14:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-02 23:14:36,112 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:14:36,112 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1] [2021-11-02 23:14:36,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-11-02 23:14:36,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:14:36,318 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:14:36,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:14:36,318 INFO L85 PathProgramCache]: Analyzing trace with hash -825098279, now seen corresponding path program 14 times [2021-11-02 23:14:36,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:14:36,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244305095] [2021-11-02 23:14:36,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:14:36,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:14:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:14:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1022 backedges. 0 proven. 1022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:37,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:14:37,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244305095] [2021-11-02 23:14:37,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244305095] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:37,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556565004] [2021-11-02 23:14:37,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:14:37,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:14:37,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:14:37,036 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:14:37,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-11-02 23:14:39,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:14:39,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:14:39,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-02 23:14:39,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:14:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1022 backedges. 0 proven. 1022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:41,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556565004] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:41,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:14:41,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 93 [2021-11-02 23:14:41,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973007339] [2021-11-02 23:14:41,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-02 23:14:41,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:14:41,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-02 23:14:41,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=7447, Unknown=0, NotChecked=0, Total=8742 [2021-11-02 23:14:41,708 INFO L87 Difference]: Start difference. First operand 338 states and 345 transitions. Second operand has 94 states, 93 states have (on average 3.236559139784946) internal successors, (301), 94 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:42,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:14:42,797 INFO L93 Difference]: Finished difference Result 342 states and 349 transitions. [2021-11-02 23:14:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-02 23:14:42,797 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 3.236559139784946) internal successors, (301), 94 states have internal predecessors, (301), 0 states have call successors, (0), 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 151 [2021-11-02 23:14:42,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:14:42,798 INFO L225 Difference]: With dead ends: 342 [2021-11-02 23:14:42,799 INFO L226 Difference]: Without dead ends: 341 [2021-11-02 23:14:42,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5278 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3169, Invalid=12581, Unknown=0, NotChecked=0, Total=15750 [2021-11-02 23:14:42,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-02 23:14:42,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 340. [2021-11-02 23:14:42,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 337 states have (on average 1.029673590504451) internal successors, (347), 339 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:42,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 347 transitions. [2021-11-02 23:14:42,810 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 347 transitions. Word has length 151 [2021-11-02 23:14:42,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:14:42,810 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 347 transitions. [2021-11-02 23:14:42,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 3.236559139784946) internal successors, (301), 94 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:42,810 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 347 transitions. [2021-11-02 23:14:42,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-02 23:14:42,812 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:14:42,812 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1] [2021-11-02 23:14:42,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-11-02 23:14:43,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:14:43,026 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:14:43,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:14:43,026 INFO L85 PathProgramCache]: Analyzing trace with hash 449211591, now seen corresponding path program 12 times [2021-11-02 23:14:43,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:14:43,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199409161] [2021-11-02 23:14:43,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:14:43,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:14:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:14:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:43,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:14:43,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199409161] [2021-11-02 23:14:43,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199409161] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:43,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91831028] [2021-11-02 23:14:43,897 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:14:43,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:14:43,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:14:43,898 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:14:43,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-11-02 23:14:46,644 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-02 23:14:46,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:14:46,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-02 23:14:46,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:14:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:48,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91831028] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:48,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:14:48,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 105 [2021-11-02 23:14:48,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404862181] [2021-11-02 23:14:48,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-11-02 23:14:48,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:14:48,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-11-02 23:14:48,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1780, Invalid=9350, Unknown=0, NotChecked=0, Total=11130 [2021-11-02 23:14:48,971 INFO L87 Difference]: Start difference. First operand 340 states and 347 transitions. Second operand has 106 states, 105 states have (on average 2.942857142857143) internal successors, (309), 106 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:50,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:14:50,066 INFO L93 Difference]: Finished difference Result 341 states and 347 transitions. [2021-11-02 23:14:50,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-02 23:14:50,067 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 2.942857142857143) internal successors, (309), 106 states have internal predecessors, (309), 0 states have call successors, (0), 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 155 [2021-11-02 23:14:50,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:14:50,068 INFO L225 Difference]: With dead ends: 341 [2021-11-02 23:14:50,068 INFO L226 Difference]: Without dead ends: 340 [2021-11-02 23:14:50,070 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6410 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3605, Invalid=13951, Unknown=0, NotChecked=0, Total=17556 [2021-11-02 23:14:50,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-02 23:14:50,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2021-11-02 23:14:50,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 337 states have (on average 1.0267062314540059) internal successors, (346), 339 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:50,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 346 transitions. [2021-11-02 23:14:50,082 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 346 transitions. Word has length 155 [2021-11-02 23:14:50,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:14:50,082 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 346 transitions. [2021-11-02 23:14:50,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 2.942857142857143) internal successors, (309), 106 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:50,083 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 346 transitions. [2021-11-02 23:14:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-02 23:14:50,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:14:50,084 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1] [2021-11-02 23:14:50,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-11-02 23:14:50,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-11-02 23:14:50,294 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:14:50,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:14:50,294 INFO L85 PathProgramCache]: Analyzing trace with hash -655525191, now seen corresponding path program 12 times [2021-11-02 23:14:50,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:14:50,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069825651] [2021-11-02 23:14:50,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:14:50,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:14:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:14:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:51,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:14:51,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069825651] [2021-11-02 23:14:51,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069825651] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:51,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181187572] [2021-11-02 23:14:51,241 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:14:51,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:14:51,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:14:51,242 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:14:51,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-11-02 23:14:54,222 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-02 23:14:54,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:14:54,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-02 23:14:54,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:14:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:56,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181187572] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:56,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:14:56,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 106 [2021-11-02 23:14:56,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945738466] [2021-11-02 23:14:56,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-11-02 23:14:56,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:14:56,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-11-02 23:14:56,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1835, Invalid=9507, Unknown=0, NotChecked=0, Total=11342 [2021-11-02 23:14:56,701 INFO L87 Difference]: Start difference. First operand 340 states and 346 transitions. Second operand has 107 states, 106 states have (on average 2.952830188679245) internal successors, (313), 107 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:14:58,296 INFO L93 Difference]: Finished difference Result 341 states and 346 transitions. [2021-11-02 23:14:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-02 23:14:58,297 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 2.952830188679245) internal successors, (313), 107 states have internal predecessors, (313), 0 states have call successors, (0), 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 158 [2021-11-02 23:14:58,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:14:58,299 INFO L225 Difference]: With dead ends: 341 [2021-11-02 23:14:58,299 INFO L226 Difference]: Without dead ends: 340 [2021-11-02 23:14:58,301 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6487 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3687, Invalid=14135, Unknown=0, NotChecked=0, Total=17822 [2021-11-02 23:14:58,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-02 23:14:58,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2021-11-02 23:14:58,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 337 states have (on average 1.0237388724035608) internal successors, (345), 339 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 345 transitions. [2021-11-02 23:14:58,313 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 345 transitions. Word has length 158 [2021-11-02 23:14:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:14:58,313 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 345 transitions. [2021-11-02 23:14:58,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 2.952830188679245) internal successors, (313), 107 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:14:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 345 transitions. [2021-11-02 23:14:58,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-02 23:14:58,315 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:14:58,315 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1] [2021-11-02 23:14:58,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-11-02 23:14:58,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-11-02 23:14:58,530 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:14:58,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:14:58,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1812151592, now seen corresponding path program 15 times [2021-11-02 23:14:58,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:14:58,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927433136] [2021-11-02 23:14:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:14:58,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:14:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:14:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:14:59,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:14:59,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927433136] [2021-11-02 23:14:59,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927433136] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:14:59,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103634458] [2021-11-02 23:14:59,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:14:59,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:14:59,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:14:59,392 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:14:59,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-11-02 23:15:02,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-02 23:15:02,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:15:02,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-02 23:15:02,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:04,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103634458] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:15:04,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:15:04,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2021-11-02 23:15:04,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913004685] [2021-11-02 23:15:04,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-11-02 23:15:04,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:04,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-11-02 23:15:04,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1453, Invalid=8447, Unknown=0, NotChecked=0, Total=9900 [2021-11-02 23:15:04,885 INFO L87 Difference]: Start difference. First operand 340 states and 345 transitions. Second operand has 100 states, 99 states have (on average 3.202020202020202) internal successors, (317), 100 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:05,575 INFO L93 Difference]: Finished difference Result 367 states and 371 transitions. [2021-11-02 23:15:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-02 23:15:05,575 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 3.202020202020202) internal successors, (317), 100 states have internal predecessors, (317), 0 states have call successors, (0), 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 159 [2021-11-02 23:15:05,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:05,577 INFO L225 Difference]: With dead ends: 367 [2021-11-02 23:15:05,577 INFO L226 Difference]: Without dead ends: 366 [2021-11-02 23:15:05,577 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4864 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2489, Invalid=11083, Unknown=0, NotChecked=0, Total=13572 [2021-11-02 23:15:05,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-02 23:15:05,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 360. [2021-11-02 23:15:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 357 states have (on average 1.0280112044817926) internal successors, (367), 359 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 367 transitions. [2021-11-02 23:15:05,590 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 367 transitions. Word has length 159 [2021-11-02 23:15:05,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:05,590 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 367 transitions. [2021-11-02 23:15:05,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 3.202020202020202) internal successors, (317), 100 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:05,590 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 367 transitions. [2021-11-02 23:15:05,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-02 23:15:05,592 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:05,592 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1] [2021-11-02 23:15:05,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-11-02 23:15:05,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-11-02 23:15:05,810 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:15:05,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:05,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2015926890, now seen corresponding path program 15 times [2021-11-02 23:15:05,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:05,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194535248] [2021-11-02 23:15:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:05,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 0 proven. 1170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:06,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:06,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194535248] [2021-11-02 23:15:06,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194535248] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:15:06,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153278913] [2021-11-02 23:15:06,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:15:06,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:15:06,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:15:06,661 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:15:06,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-11-02 23:15:09,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-02 23:15:09,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:15:09,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-02 23:15:09,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 0 proven. 1170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:12,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153278913] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:15:12,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:15:12,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2021-11-02 23:15:12,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325552235] [2021-11-02 23:15:12,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-11-02 23:15:12,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:12,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-11-02 23:15:12,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1453, Invalid=8447, Unknown=0, NotChecked=0, Total=9900 [2021-11-02 23:15:12,455 INFO L87 Difference]: Start difference. First operand 360 states and 367 transitions. Second operand has 100 states, 99 states have (on average 3.242424242424242) internal successors, (321), 100 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:13,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:13,721 INFO L93 Difference]: Finished difference Result 364 states and 371 transitions. [2021-11-02 23:15:13,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-02 23:15:13,721 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 3.242424242424242) internal successors, (321), 100 states have internal predecessors, (321), 0 states have call successors, (0), 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 161 [2021-11-02 23:15:13,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:13,723 INFO L225 Difference]: With dead ends: 364 [2021-11-02 23:15:13,723 INFO L226 Difference]: Without dead ends: 363 [2021-11-02 23:15:13,724 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5813 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3460, Invalid=13832, Unknown=0, NotChecked=0, Total=17292 [2021-11-02 23:15:13,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-11-02 23:15:13,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 362. [2021-11-02 23:15:13,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 359 states have (on average 1.0278551532033426) internal successors, (369), 361 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:13,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 369 transitions. [2021-11-02 23:15:13,736 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 369 transitions. Word has length 161 [2021-11-02 23:15:13,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:13,736 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 369 transitions. [2021-11-02 23:15:13,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 3.242424242424242) internal successors, (321), 100 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:13,737 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 369 transitions. [2021-11-02 23:15:13,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-02 23:15:13,738 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:13,738 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1] [2021-11-02 23:15:13,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-11-02 23:15:13,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-11-02 23:15:13,962 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:15:13,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:13,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1326061492, now seen corresponding path program 13 times [2021-11-02 23:15:13,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:13,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444008991] [2021-11-02 23:15:13,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:13,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:15,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 0 proven. 1040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:15,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:15,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444008991] [2021-11-02 23:15:15,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444008991] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:15:15,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684243137] [2021-11-02 23:15:15,007 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 23:15:15,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:15:15,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:15:15,008 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:15:15,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-11-02 23:15:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:18,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-02 23:15:18,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:20,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 0 proven. 1040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:20,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684243137] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:15:20,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:15:20,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 113 [2021-11-02 23:15:20,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11190373] [2021-11-02 23:15:20,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-11-02 23:15:20,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:20,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-11-02 23:15:20,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2043, Invalid=10839, Unknown=0, NotChecked=0, Total=12882 [2021-11-02 23:15:20,790 INFO L87 Difference]: Start difference. First operand 362 states and 369 transitions. Second operand has 114 states, 113 states have (on average 2.9469026548672566) internal successors, (333), 114 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:21,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:21,983 INFO L93 Difference]: Finished difference Result 363 states and 369 transitions. [2021-11-02 23:15:21,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-02 23:15:21,983 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 2.9469026548672566) internal successors, (333), 114 states have internal predecessors, (333), 0 states have call successors, (0), 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 167 [2021-11-02 23:15:21,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:21,984 INFO L225 Difference]: With dead ends: 363 [2021-11-02 23:15:21,984 INFO L226 Difference]: Without dead ends: 362 [2021-11-02 23:15:21,986 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7458 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4148, Invalid=16158, Unknown=0, NotChecked=0, Total=20306 [2021-11-02 23:15:21,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-11-02 23:15:21,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-11-02 23:15:21,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 359 states have (on average 1.0250696378830084) internal successors, (368), 361 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 368 transitions. [2021-11-02 23:15:21,993 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 368 transitions. Word has length 167 [2021-11-02 23:15:21,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:21,994 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 368 transitions. [2021-11-02 23:15:21,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 2.9469026548672566) internal successors, (333), 114 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:21,994 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 368 transitions. [2021-11-02 23:15:21,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-02 23:15:21,995 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:21,995 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1] [2021-11-02 23:15:22,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-11-02 23:15:22,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:15:22,195 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:15:22,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:22,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2065516871, now seen corresponding path program 16 times [2021-11-02 23:15:22,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:22,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532892794] [2021-11-02 23:15:22,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:22,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:23,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:23,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532892794] [2021-11-02 23:15:23,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532892794] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:15:23,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461244850] [2021-11-02 23:15:23,092 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:15:23,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:15:23,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:15:23,093 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:15:23,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-11-02 23:15:26,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:15:26,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:15:26,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-02 23:15:26,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:28,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461244850] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:15:28,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:15:28,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 105 [2021-11-02 23:15:28,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671748266] [2021-11-02 23:15:28,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-11-02 23:15:28,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:28,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-11-02 23:15:28,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1620, Invalid=9510, Unknown=0, NotChecked=0, Total=11130 [2021-11-02 23:15:28,810 INFO L87 Difference]: Start difference. First operand 362 states and 368 transitions. Second operand has 106 states, 105 states have (on average 3.2095238095238097) internal successors, (337), 106 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:29,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:29,507 INFO L93 Difference]: Finished difference Result 390 states and 394 transitions. [2021-11-02 23:15:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-02 23:15:29,507 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 3.2095238095238097) internal successors, (337), 106 states have internal predecessors, (337), 0 states have call successors, (0), 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 169 [2021-11-02 23:15:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:29,509 INFO L225 Difference]: With dead ends: 390 [2021-11-02 23:15:29,510 INFO L226 Difference]: Without dead ends: 389 [2021-11-02 23:15:29,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5491 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2780, Invalid=12472, Unknown=0, NotChecked=0, Total=15252 [2021-11-02 23:15:29,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-02 23:15:29,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 382. [2021-11-02 23:15:29,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 379 states have (on average 1.029023746701847) internal successors, (390), 381 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 390 transitions. [2021-11-02 23:15:29,525 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 390 transitions. Word has length 169 [2021-11-02 23:15:29,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:29,525 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 390 transitions. [2021-11-02 23:15:29,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 3.2095238095238097) internal successors, (337), 106 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:29,526 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 390 transitions. [2021-11-02 23:15:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-02 23:15:29,527 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:29,527 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1] [2021-11-02 23:15:29,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-11-02 23:15:29,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:15:29,742 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:15:29,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:29,742 INFO L85 PathProgramCache]: Analyzing trace with hash -411218772, now seen corresponding path program 13 times [2021-11-02 23:15:29,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:29,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809550831] [2021-11-02 23:15:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:29,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 1079 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:31,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:31,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809550831] [2021-11-02 23:15:31,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809550831] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:15:31,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036080359] [2021-11-02 23:15:31,063 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 23:15:31,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:15:31,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:15:31,064 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:15:31,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-11-02 23:15:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:34,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-02 23:15:34,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 1079 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:37,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036080359] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:15:37,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:15:37,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 114 [2021-11-02 23:15:37,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229004868] [2021-11-02 23:15:37,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2021-11-02 23:15:37,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:37,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-11-02 23:15:37,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2102, Invalid=11008, Unknown=0, NotChecked=0, Total=13110 [2021-11-02 23:15:37,004 INFO L87 Difference]: Start difference. First operand 382 states and 390 transitions. Second operand has 115 states, 114 states have (on average 2.956140350877193) internal successors, (337), 115 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:38,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:38,220 INFO L93 Difference]: Finished difference Result 383 states and 390 transitions. [2021-11-02 23:15:38,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-02 23:15:38,220 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 114 states have (on average 2.956140350877193) internal successors, (337), 115 states have internal predecessors, (337), 0 states have call successors, (0), 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 170 [2021-11-02 23:15:38,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:38,222 INFO L225 Difference]: With dead ends: 383 [2021-11-02 23:15:38,222 INFO L226 Difference]: Without dead ends: 382 [2021-11-02 23:15:38,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7541 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4236, Invalid=16356, Unknown=0, NotChecked=0, Total=20592 [2021-11-02 23:15:38,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-02 23:15:38,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2021-11-02 23:15:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 379 states have (on average 1.0263852242744063) internal successors, (389), 381 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:38,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 389 transitions. [2021-11-02 23:15:38,235 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 389 transitions. Word has length 170 [2021-11-02 23:15:38,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:38,235 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 389 transitions. [2021-11-02 23:15:38,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 114 states have (on average 2.956140350877193) internal successors, (337), 115 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:38,236 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 389 transitions. [2021-11-02 23:15:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-02 23:15:38,237 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:38,237 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1] [2021-11-02 23:15:38,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-11-02 23:15:38,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:15:38,455 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:15:38,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:38,455 INFO L85 PathProgramCache]: Analyzing trace with hash -686820421, now seen corresponding path program 16 times [2021-11-02 23:15:38,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:38,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975170375] [2021-11-02 23:15:38,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:38,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 0 proven. 1328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:39,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:39,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975170375] [2021-11-02 23:15:39,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975170375] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:15:39,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878962777] [2021-11-02 23:15:39,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:15:39,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:15:39,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:15:39,558 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:15:39,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-11-02 23:15:42,982 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:15:42,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:15:42,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-02 23:15:42,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 0 proven. 1328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:45,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878962777] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:15:45,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:15:45,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 105 [2021-11-02 23:15:45,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460458462] [2021-11-02 23:15:45,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-11-02 23:15:45,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:45,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-11-02 23:15:45,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1620, Invalid=9510, Unknown=0, NotChecked=0, Total=11130 [2021-11-02 23:15:45,636 INFO L87 Difference]: Start difference. First operand 382 states and 389 transitions. Second operand has 106 states, 105 states have (on average 3.2476190476190476) internal successors, (341), 106 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:46,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:46,982 INFO L93 Difference]: Finished difference Result 386 states and 393 transitions. [2021-11-02 23:15:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-02 23:15:46,983 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 3.2476190476190476) internal successors, (341), 106 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2021-11-02 23:15:46,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:46,984 INFO L225 Difference]: With dead ends: 386 [2021-11-02 23:15:46,984 INFO L226 Difference]: Without dead ends: 385 [2021-11-02 23:15:46,985 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6769 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3993, Invalid=16029, Unknown=0, NotChecked=0, Total=20022 [2021-11-02 23:15:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-11-02 23:15:46,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 384. [2021-11-02 23:15:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 381 states have (on average 1.026246719160105) internal successors, (391), 383 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 391 transitions. [2021-11-02 23:15:46,994 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 391 transitions. Word has length 171 [2021-11-02 23:15:46,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:46,995 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 391 transitions. [2021-11-02 23:15:46,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 3.2476190476190476) internal successors, (341), 106 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:46,995 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 391 transitions. [2021-11-02 23:15:46,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-02 23:15:46,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:46,997 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1] [2021-11-02 23:15:47,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-11-02 23:15:47,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:15:47,218 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:15:47,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:47,218 INFO L85 PathProgramCache]: Analyzing trace with hash 141281057, now seen corresponding path program 14 times [2021-11-02 23:15:47,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:47,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249524518] [2021-11-02 23:15:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:47,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 0 proven. 1204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:48,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:48,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249524518] [2021-11-02 23:15:48,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249524518] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:15:48,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877568906] [2021-11-02 23:15:48,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:15:48,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:15:48,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:15:48,465 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:15:48,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-11-02 23:15:52,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:15:52,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:15:52,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-02 23:15:52,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:15:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 0 proven. 1204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:54,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877568906] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:15:54,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:15:54,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 121 [2021-11-02 23:15:54,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707674166] [2021-11-02 23:15:54,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2021-11-02 23:15:54,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:54,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2021-11-02 23:15:54,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2324, Invalid=12438, Unknown=0, NotChecked=0, Total=14762 [2021-11-02 23:15:54,922 INFO L87 Difference]: Start difference. First operand 384 states and 391 transitions. Second operand has 122 states, 121 states have (on average 2.950413223140496) internal successors, (357), 122 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:56,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:56,256 INFO L93 Difference]: Finished difference Result 385 states and 391 transitions. [2021-11-02 23:15:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-11-02 23:15:56,256 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 121 states have (on average 2.950413223140496) internal successors, (357), 122 states have internal predecessors, (357), 0 states have call successors, (0), 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 179 [2021-11-02 23:15:56,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:56,258 INFO L225 Difference]: With dead ends: 385 [2021-11-02 23:15:56,258 INFO L226 Difference]: Without dead ends: 384 [2021-11-02 23:15:56,259 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8584 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4729, Invalid=18527, Unknown=0, NotChecked=0, Total=23256 [2021-11-02 23:15:56,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-02 23:15:56,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2021-11-02 23:15:56,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 381 states have (on average 1.0236220472440944) internal successors, (390), 383 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 390 transitions. [2021-11-02 23:15:56,271 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 390 transitions. Word has length 179 [2021-11-02 23:15:56,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:56,272 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 390 transitions. [2021-11-02 23:15:56,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 121 states have (on average 2.950413223140496) internal successors, (357), 122 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 390 transitions. [2021-11-02 23:15:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-02 23:15:56,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:56,274 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1] [2021-11-02 23:15:56,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-11-02 23:15:56,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:15:56,490 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:15:56,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:56,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1056428278, now seen corresponding path program 17 times [2021-11-02 23:15:56,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:56,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242829982] [2021-11-02 23:15:56,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:56,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 0 proven. 1462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:57,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:57,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242829982] [2021-11-02 23:15:57,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242829982] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:15:57,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339968392] [2021-11-02 23:15:57,483 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:15:57,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:15:57,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:15:57,485 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:15:57,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-11-02 23:16:01,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-02 23:16:01,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:16:01,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-02 23:16:01,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:16:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 0 proven. 1462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:03,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339968392] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:16:03,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:16:03,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2021-11-02 23:16:03,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962841902] [2021-11-02 23:16:03,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-11-02 23:16:03,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:03,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-11-02 23:16:03,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1796, Invalid=10636, Unknown=0, NotChecked=0, Total=12432 [2021-11-02 23:16:03,952 INFO L87 Difference]: Start difference. First operand 384 states and 390 transitions. Second operand has 112 states, 111 states have (on average 3.2162162162162162) internal successors, (357), 112 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:04,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:04,907 INFO L93 Difference]: Finished difference Result 412 states and 416 transitions. [2021-11-02 23:16:04,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-02 23:16:04,907 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 3.2162162162162162) internal successors, (357), 112 states have internal predecessors, (357), 0 states have call successors, (0), 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 179 [2021-11-02 23:16:04,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:04,909 INFO L225 Difference]: With dead ends: 412 [2021-11-02 23:16:04,909 INFO L226 Difference]: Without dead ends: 411 [2021-11-02 23:16:04,911 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6156 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3087, Invalid=13943, Unknown=0, NotChecked=0, Total=17030 [2021-11-02 23:16:04,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-11-02 23:16:04,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 404. [2021-11-02 23:16:04,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 401 states have (on average 1.027431421446384) internal successors, (412), 403 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 412 transitions. [2021-11-02 23:16:04,920 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 412 transitions. Word has length 179 [2021-11-02 23:16:04,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:04,920 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 412 transitions. [2021-11-02 23:16:04,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 3.2162162162162162) internal successors, (357), 112 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 412 transitions. [2021-11-02 23:16:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-02 23:16:04,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:04,921 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1] [2021-11-02 23:16:04,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-11-02 23:16:05,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:16:05,122 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:16:05,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1615291444, now seen corresponding path program 17 times [2021-11-02 23:16:05,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:05,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206695275] [2021-11-02 23:16:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:05,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:06,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:06,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206695275] [2021-11-02 23:16:06,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206695275] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:16:06,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494869649] [2021-11-02 23:16:06,194 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:16:06,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:16:06,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:16:06,216 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:16:06,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-11-02 23:16:10,036 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-02 23:16:10,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:16:10,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-02 23:16:10,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:16:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:12,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494869649] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:16:12,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:16:12,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2021-11-02 23:16:12,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891773629] [2021-11-02 23:16:12,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-11-02 23:16:12,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:12,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-11-02 23:16:12,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1796, Invalid=10636, Unknown=0, NotChecked=0, Total=12432 [2021-11-02 23:16:12,762 INFO L87 Difference]: Start difference. First operand 404 states and 412 transitions. Second operand has 112 states, 111 states have (on average 3.2522522522522523) internal successors, (361), 112 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:14,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:14,157 INFO L93 Difference]: Finished difference Result 408 states and 416 transitions. [2021-11-02 23:16:14,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-02 23:16:14,158 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 3.2522522522522523) internal successors, (361), 112 states have internal predecessors, (361), 0 states have call successors, (0), 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 181 [2021-11-02 23:16:14,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:14,159 INFO L225 Difference]: With dead ends: 408 [2021-11-02 23:16:14,159 INFO L226 Difference]: Without dead ends: 407 [2021-11-02 23:16:14,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7373 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4319, Invalid=17437, Unknown=0, NotChecked=0, Total=21756 [2021-11-02 23:16:14,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-02 23:16:14,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 406. [2021-11-02 23:16:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 403 states have (on average 1.0272952853598014) internal successors, (414), 405 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:14,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 414 transitions. [2021-11-02 23:16:14,170 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 414 transitions. Word has length 181 [2021-11-02 23:16:14,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:14,170 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 414 transitions. [2021-11-02 23:16:14,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 3.2522522522522523) internal successors, (361), 112 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:14,170 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 414 transitions. [2021-11-02 23:16:14,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-02 23:16:14,171 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:14,171 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 1, 1, 1, 1] [2021-11-02 23:16:14,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-11-02 23:16:14,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-11-02 23:16:14,372 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:16:14,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:14,372 INFO L85 PathProgramCache]: Analyzing trace with hash -163919329, now seen corresponding path program 14 times [2021-11-02 23:16:14,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:14,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617334908] [2021-11-02 23:16:14,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:14,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:15,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 0 proven. 1246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:15,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:15,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617334908] [2021-11-02 23:16:15,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617334908] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:16:15,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318888103] [2021-11-02 23:16:15,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:16:15,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:16:15,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:16:15,531 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:16:15,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-11-02 23:16:19,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:16:19,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:16:19,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-02 23:16:19,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:16:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 0 proven. 1246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:22,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318888103] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:16:22,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:16:22,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 122 [2021-11-02 23:16:22,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675738313] [2021-11-02 23:16:22,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2021-11-02 23:16:22,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:22,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-11-02 23:16:22,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2387, Invalid=12619, Unknown=0, NotChecked=0, Total=15006 [2021-11-02 23:16:22,254 INFO L87 Difference]: Start difference. First operand 406 states and 414 transitions. Second operand has 123 states, 122 states have (on average 2.959016393442623) internal successors, (361), 123 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:23,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:23,626 INFO L93 Difference]: Finished difference Result 407 states and 414 transitions. [2021-11-02 23:16:23,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-02 23:16:23,626 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 122 states have (on average 2.959016393442623) internal successors, (361), 123 states have internal predecessors, (361), 0 states have call successors, (0), 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 182 [2021-11-02 23:16:23,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:23,628 INFO L225 Difference]: With dead ends: 407 [2021-11-02 23:16:23,628 INFO L226 Difference]: Without dead ends: 406 [2021-11-02 23:16:23,630 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8673 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4823, Invalid=18739, Unknown=0, NotChecked=0, Total=23562 [2021-11-02 23:16:23,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-02 23:16:23,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2021-11-02 23:16:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 403 states have (on average 1.0248138957816377) internal successors, (413), 405 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:23,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 413 transitions. [2021-11-02 23:16:23,643 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 413 transitions. Word has length 182 [2021-11-02 23:16:23,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:23,643 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 413 transitions. [2021-11-02 23:16:23,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 122 states have (on average 2.959016393442623) internal successors, (361), 123 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:23,644 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 413 transitions. [2021-11-02 23:16:23,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-02 23:16:23,645 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:23,645 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1] [2021-11-02 23:16:23,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-11-02 23:16:23,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:16:23,860 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:16:23,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:23,860 INFO L85 PathProgramCache]: Analyzing trace with hash 588527131, now seen corresponding path program 18 times [2021-11-02 23:16:23,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:23,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509460689] [2021-11-02 23:16:23,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:23,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 0 proven. 1638 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:24,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:24,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509460689] [2021-11-02 23:16:24,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509460689] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:16:24,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474341669] [2021-11-02 23:16:24,942 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:16:24,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:16:24,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:16:24,944 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:16:24,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-11-02 23:16:28,905 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-02 23:16:28,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:16:28,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-02 23:16:28,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:16:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 0 proven. 1638 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:31,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474341669] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:16:31,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:16:31,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 117 [2021-11-02 23:16:31,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851666399] [2021-11-02 23:16:31,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-11-02 23:16:31,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:31,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-11-02 23:16:31,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1981, Invalid=11825, Unknown=0, NotChecked=0, Total=13806 [2021-11-02 23:16:31,877 INFO L87 Difference]: Start difference. First operand 406 states and 413 transitions. Second operand has 118 states, 117 states have (on average 3.2222222222222223) internal successors, (377), 118 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:32,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:32,711 INFO L93 Difference]: Finished difference Result 435 states and 439 transitions. [2021-11-02 23:16:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-02 23:16:32,711 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 3.2222222222222223) internal successors, (377), 118 states have internal predecessors, (377), 0 states have call successors, (0), 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 189 [2021-11-02 23:16:32,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:32,713 INFO L225 Difference]: With dead ends: 435 [2021-11-02 23:16:32,713 INFO L226 Difference]: Without dead ends: 434 [2021-11-02 23:16:32,714 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6859 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3410, Invalid=15496, Unknown=0, NotChecked=0, Total=18906 [2021-11-02 23:16:32,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-02 23:16:32,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 426. [2021-11-02 23:16:32,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 423 states have (on average 1.0283687943262412) internal successors, (435), 425 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 435 transitions. [2021-11-02 23:16:32,728 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 435 transitions. Word has length 189 [2021-11-02 23:16:32,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:32,728 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 435 transitions. [2021-11-02 23:16:32,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 3.2222222222222223) internal successors, (377), 118 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:32,729 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 435 transitions. [2021-11-02 23:16:32,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-02 23:16:32,730 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:32,730 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1] [2021-11-02 23:16:32,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-11-02 23:16:32,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-11-02 23:16:32,933 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:16:32,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:32,933 INFO L85 PathProgramCache]: Analyzing trace with hash -678905074, now seen corresponding path program 15 times [2021-11-02 23:16:32,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:32,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175864485] [2021-11-02 23:16:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:32,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 0 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:34,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:34,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175864485] [2021-11-02 23:16:34,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175864485] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:16:34,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95672598] [2021-11-02 23:16:34,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:16:34,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:16:34,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:16:34,147 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:16:34,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-11-02 23:16:38,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-02 23:16:38,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:16:38,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-02 23:16:38,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:16:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 0 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:41,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95672598] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:16:41,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:16:41,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 129 [2021-11-02 23:16:41,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067950295] [2021-11-02 23:16:41,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2021-11-02 23:16:41,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:41,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2021-11-02 23:16:41,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2623, Invalid=14147, Unknown=0, NotChecked=0, Total=16770 [2021-11-02 23:16:41,498 INFO L87 Difference]: Start difference. First operand 426 states and 435 transitions. Second operand has 130 states, 129 states have (on average 2.953488372093023) internal successors, (381), 130 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:43,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:43,086 INFO L93 Difference]: Finished difference Result 427 states and 435 transitions. [2021-11-02 23:16:43,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-02 23:16:43,086 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 129 states have (on average 2.953488372093023) internal successors, (381), 130 states have internal predecessors, (381), 0 states have call successors, (0), 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 191 [2021-11-02 23:16:43,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:43,088 INFO L225 Difference]: With dead ends: 427 [2021-11-02 23:16:43,088 INFO L226 Difference]: Without dead ends: 426 [2021-11-02 23:16:43,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9792 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5348, Invalid=21058, Unknown=0, NotChecked=0, Total=26406 [2021-11-02 23:16:43,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-11-02 23:16:43,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2021-11-02 23:16:43,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 423 states have (on average 1.0260047281323876) internal successors, (434), 425 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 434 transitions. [2021-11-02 23:16:43,098 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 434 transitions. Word has length 191 [2021-11-02 23:16:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:43,098 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 434 transitions. [2021-11-02 23:16:43,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 129 states have (on average 2.953488372093023) internal successors, (381), 130 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 434 transitions. [2021-11-02 23:16:43,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-02 23:16:43,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:43,099 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 1, 1, 1, 1] [2021-11-02 23:16:43,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2021-11-02 23:16:43,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-11-02 23:16:43,300 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:16:43,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:43,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1361108323, now seen corresponding path program 18 times [2021-11-02 23:16:43,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:43,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709493773] [2021-11-02 23:16:43,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:43,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1674 backedges. 0 proven. 1674 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:44,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:44,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709493773] [2021-11-02 23:16:44,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709493773] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:16:44,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829654535] [2021-11-02 23:16:44,376 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:16:44,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:16:44,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:16:44,377 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:16:44,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-11-02 23:16:48,705 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-02 23:16:48,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:16:48,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-02 23:16:48,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:16:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1674 backedges. 0 proven. 1674 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:51,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829654535] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:16:51,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:16:51,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 117 [2021-11-02 23:16:51,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208114499] [2021-11-02 23:16:51,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-11-02 23:16:51,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:51,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-11-02 23:16:51,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1981, Invalid=11825, Unknown=0, NotChecked=0, Total=13806 [2021-11-02 23:16:51,630 INFO L87 Difference]: Start difference. First operand 426 states and 434 transitions. Second operand has 118 states, 117 states have (on average 3.2564102564102564) internal successors, (381), 118 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:53,217 INFO L93 Difference]: Finished difference Result 430 states and 438 transitions. [2021-11-02 23:16:53,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-02 23:16:53,217 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 3.2564102564102564) internal successors, (381), 118 states have internal predecessors, (381), 0 states have call successors, (0), 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 191 [2021-11-02 23:16:53,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:53,219 INFO L225 Difference]: With dead ends: 430 [2021-11-02 23:16:53,219 INFO L226 Difference]: Without dead ends: 429 [2021-11-02 23:16:53,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8445 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4912, Invalid=19894, Unknown=0, NotChecked=0, Total=24806 [2021-11-02 23:16:53,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-02 23:16:53,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 428. [2021-11-02 23:16:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 425 states have (on average 1.0258823529411765) internal successors, (436), 427 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 436 transitions. [2021-11-02 23:16:53,230 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 436 transitions. Word has length 191 [2021-11-02 23:16:53,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:53,230 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 436 transitions. [2021-11-02 23:16:53,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 3.2564102564102564) internal successors, (381), 118 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:53,231 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 436 transitions. [2021-11-02 23:16:53,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-02 23:16:53,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:53,232 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1] [2021-11-02 23:16:53,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2021-11-02 23:16:53,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:16:53,458 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:16:53,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:53,458 INFO L85 PathProgramCache]: Analyzing trace with hash -260001006, now seen corresponding path program 15 times [2021-11-02 23:16:53,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:53,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992946711] [2021-11-02 23:16:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:53,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 0 proven. 1425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:16:54,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:54,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992946711] [2021-11-02 23:16:54,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992946711] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:16:54,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102131166] [2021-11-02 23:16:54,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:16:54,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:16:54,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:16:54,761 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:16:54,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-11-02 23:16:59,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-02 23:16:59,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:16:59,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-02 23:16:59,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:17:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 0 proven. 1425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:02,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102131166] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:17:02,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:17:02,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 130 [2021-11-02 23:17:02,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886045344] [2021-11-02 23:17:02,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2021-11-02 23:17:02,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:02,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-11-02 23:17:02,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2690, Invalid=14340, Unknown=0, NotChecked=0, Total=17030 [2021-11-02 23:17:02,267 INFO L87 Difference]: Start difference. First operand 428 states and 436 transitions. Second operand has 131 states, 130 states have (on average 2.9615384615384617) internal successors, (385), 131 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:03,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:03,806 INFO L93 Difference]: Finished difference Result 429 states and 436 transitions. [2021-11-02 23:17:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-11-02 23:17:03,806 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 130 states have (on average 2.9615384615384617) internal successors, (385), 131 states have internal predecessors, (385), 0 states have call successors, (0), 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 194 [2021-11-02 23:17:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:03,808 INFO L225 Difference]: With dead ends: 429 [2021-11-02 23:17:03,808 INFO L226 Difference]: Without dead ends: 428 [2021-11-02 23:17:03,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9887 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5448, Invalid=21284, Unknown=0, NotChecked=0, Total=26732 [2021-11-02 23:17:03,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-02 23:17:03,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2021-11-02 23:17:03,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 425 states have (on average 1.0235294117647058) internal successors, (435), 427 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:03,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 435 transitions. [2021-11-02 23:17:03,820 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 435 transitions. Word has length 194 [2021-11-02 23:17:03,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:03,820 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 435 transitions. [2021-11-02 23:17:03,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 130 states have (on average 2.9615384615384617) internal successors, (385), 131 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:03,821 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 435 transitions. [2021-11-02 23:17:03,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-02 23:17:03,822 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:03,822 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1] [2021-11-02 23:17:03,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-11-02 23:17:04,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:17:04,023 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:17:04,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:04,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1976345620, now seen corresponding path program 19 times [2021-11-02 23:17:04,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:04,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862365365] [2021-11-02 23:17:04,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:04,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:05,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1824 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:05,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:17:05,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862365365] [2021-11-02 23:17:05,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862365365] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:17:05,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632394935] [2021-11-02 23:17:05,211 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 23:17:05,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:17:05,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:17:05,211 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:17:05,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-11-02 23:17:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:09,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-02 23:17:09,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:17:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1824 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:12,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632394935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:17:12,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:17:12,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2021-11-02 23:17:12,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593188756] [2021-11-02 23:17:12,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2021-11-02 23:17:12,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:12,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-11-02 23:17:12,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2175, Invalid=13077, Unknown=0, NotChecked=0, Total=15252 [2021-11-02 23:17:12,767 INFO L87 Difference]: Start difference. First operand 428 states and 435 transitions. Second operand has 124 states, 123 states have (on average 3.227642276422764) internal successors, (397), 124 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:13,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:13,700 INFO L93 Difference]: Finished difference Result 457 states and 461 transitions. [2021-11-02 23:17:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 23:17:13,701 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 123 states have (on average 3.227642276422764) internal successors, (397), 124 states have internal predecessors, (397), 0 states have call successors, (0), 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 199 [2021-11-02 23:17:13,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:13,702 INFO L225 Difference]: With dead ends: 457 [2021-11-02 23:17:13,702 INFO L226 Difference]: Without dead ends: 456 [2021-11-02 23:17:13,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7600 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3749, Invalid=17131, Unknown=0, NotChecked=0, Total=20880 [2021-11-02 23:17:13,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-02 23:17:13,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 448. [2021-11-02 23:17:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 445 states have (on average 1.0269662921348315) internal successors, (457), 447 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 457 transitions. [2021-11-02 23:17:13,714 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 457 transitions. Word has length 199 [2021-11-02 23:17:13,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:13,714 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 457 transitions. [2021-11-02 23:17:13,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 123 states have (on average 3.227642276422764) internal successors, (397), 124 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 457 transitions. [2021-11-02 23:17:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-02 23:17:13,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:13,716 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1] [2021-11-02 23:17:13,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2021-11-02 23:17:13,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:17:13,929 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:17:13,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:13,929 INFO L85 PathProgramCache]: Analyzing trace with hash -892594130, now seen corresponding path program 19 times [2021-11-02 23:17:13,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:13,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511092315] [2021-11-02 23:17:13,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:13,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:15,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1862 backedges. 0 proven. 1862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:15,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:17:15,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511092315] [2021-11-02 23:17:15,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511092315] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:17:15,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64100713] [2021-11-02 23:17:15,095 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 23:17:15,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:17:15,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:17:15,097 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:17:15,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-11-02 23:17:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:19,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-02 23:17:19,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:17:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1862 backedges. 0 proven. 1862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:22,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64100713] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:17:22,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:17:22,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2021-11-02 23:17:22,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331471202] [2021-11-02 23:17:22,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2021-11-02 23:17:22,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:22,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-11-02 23:17:22,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2175, Invalid=13077, Unknown=0, NotChecked=0, Total=15252 [2021-11-02 23:17:22,794 INFO L87 Difference]: Start difference. First operand 448 states and 457 transitions. Second operand has 124 states, 123 states have (on average 3.2601626016260163) internal successors, (401), 124 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:24,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:24,561 INFO L93 Difference]: Finished difference Result 452 states and 461 transitions. [2021-11-02 23:17:24,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-11-02 23:17:24,561 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 123 states have (on average 3.2601626016260163) internal successors, (401), 124 states have internal predecessors, (401), 0 states have call successors, (0), 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 201 [2021-11-02 23:17:24,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:24,563 INFO L225 Difference]: With dead ends: 452 [2021-11-02 23:17:24,563 INFO L226 Difference]: Without dead ends: 451 [2021-11-02 23:17:24,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9118 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5273, Invalid=21459, Unknown=0, NotChecked=0, Total=26732 [2021-11-02 23:17:24,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-02 23:17:24,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 450. [2021-11-02 23:17:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 447 states have (on average 1.0268456375838926) internal successors, (459), 449 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 459 transitions. [2021-11-02 23:17:24,576 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 459 transitions. Word has length 201 [2021-11-02 23:17:24,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:24,577 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 459 transitions. [2021-11-02 23:17:24,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 123 states have (on average 3.2601626016260163) internal successors, (401), 124 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:24,577 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 459 transitions. [2021-11-02 23:17:24,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-02 23:17:24,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:24,578 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1] [2021-11-02 23:17:24,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2021-11-02 23:17:24,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:17:24,779 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:17:24,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:24,779 INFO L85 PathProgramCache]: Analyzing trace with hash 186528635, now seen corresponding path program 16 times [2021-11-02 23:17:24,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:24,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632393260] [2021-11-02 23:17:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:24,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:26,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:17:26,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632393260] [2021-11-02 23:17:26,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632393260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:17:26,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017094821] [2021-11-02 23:17:26,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:17:26,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:17:26,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:17:26,167 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:17:26,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-11-02 23:17:30,767 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:17:30,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:17:30,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-02 23:17:30,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:17:34,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:34,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017094821] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:17:34,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:17:34,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 137 [2021-11-02 23:17:34,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371362463] [2021-11-02 23:17:34,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2021-11-02 23:17:34,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:34,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2021-11-02 23:17:34,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2940, Invalid=15966, Unknown=0, NotChecked=0, Total=18906 [2021-11-02 23:17:34,514 INFO L87 Difference]: Start difference. First operand 450 states and 459 transitions. Second operand has 138 states, 137 states have (on average 2.9562043795620436) internal successors, (405), 138 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:36,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:36,378 INFO L93 Difference]: Finished difference Result 451 states and 459 transitions. [2021-11-02 23:17:36,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-11-02 23:17:36,379 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 137 states have (on average 2.9562043795620436) internal successors, (405), 138 states have internal predecessors, (405), 0 states have call successors, (0), 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 203 [2021-11-02 23:17:36,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:36,381 INFO L225 Difference]: With dead ends: 451 [2021-11-02 23:17:36,381 INFO L226 Difference]: Without dead ends: 450 [2021-11-02 23:17:36,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11080 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=6005, Invalid=23751, Unknown=0, NotChecked=0, Total=29756 [2021-11-02 23:17:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-02 23:17:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2021-11-02 23:17:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 447 states have (on average 1.0246085011185682) internal successors, (458), 449 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 458 transitions. [2021-11-02 23:17:36,394 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 458 transitions. Word has length 203 [2021-11-02 23:17:36,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:36,394 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 458 transitions. [2021-11-02 23:17:36,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 137 states have (on average 2.9562043795620436) internal successors, (405), 138 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:36,395 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 458 transitions. [2021-11-02 23:17:36,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-02 23:17:36,396 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:36,397 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 1, 1, 1, 1] [2021-11-02 23:17:36,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-11-02 23:17:36,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:17:36,622 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:17:36,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:36,622 INFO L85 PathProgramCache]: Analyzing trace with hash -813054075, now seen corresponding path program 16 times [2021-11-02 23:17:36,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:36,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356589077] [2021-11-02 23:17:36,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:36,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 0 proven. 1616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:38,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:17:38,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356589077] [2021-11-02 23:17:38,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356589077] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:17:38,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034751028] [2021-11-02 23:17:38,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:17:38,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:17:38,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:17:38,049 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:17:38,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-11-02 23:17:42,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:17:42,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:17:42,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-02 23:17:42,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:17:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 0 proven. 1616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:46,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034751028] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:17:46,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:17:46,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 138 [2021-11-02 23:17:46,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949004372] [2021-11-02 23:17:46,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2021-11-02 23:17:46,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:46,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2021-11-02 23:17:46,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3011, Invalid=16171, Unknown=0, NotChecked=0, Total=19182 [2021-11-02 23:17:46,566 INFO L87 Difference]: Start difference. First operand 450 states and 458 transitions. Second operand has 139 states, 138 states have (on average 2.963768115942029) internal successors, (409), 139 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:48,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:48,239 INFO L93 Difference]: Finished difference Result 451 states and 458 transitions. [2021-11-02 23:17:48,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-02 23:17:48,239 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 138 states have (on average 2.963768115942029) internal successors, (409), 139 states have internal predecessors, (409), 0 states have call successors, (0), 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 206 [2021-11-02 23:17:48,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:48,241 INFO L225 Difference]: With dead ends: 451 [2021-11-02 23:17:48,241 INFO L226 Difference]: Without dead ends: 450 [2021-11-02 23:17:48,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11181 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6111, Invalid=23991, Unknown=0, NotChecked=0, Total=30102 [2021-11-02 23:17:48,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-02 23:17:48,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2021-11-02 23:17:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 447 states have (on average 1.0223713646532437) internal successors, (457), 449 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:48,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 457 transitions. [2021-11-02 23:17:48,253 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 457 transitions. Word has length 206 [2021-11-02 23:17:48,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:48,254 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 457 transitions. [2021-11-02 23:17:48,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 138 states have (on average 2.963768115942029) internal successors, (409), 139 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:48,254 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 457 transitions. [2021-11-02 23:17:48,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-02 23:17:48,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:48,255 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1] [2021-11-02 23:17:48,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2021-11-02 23:17:48,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2021-11-02 23:17:48,456 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:17:48,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:48,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1931358333, now seen corresponding path program 20 times [2021-11-02 23:17:48,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:48,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761257055] [2021-11-02 23:17:48,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:48,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:17:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 0 proven. 2020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:49,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:17:49,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761257055] [2021-11-02 23:17:49,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761257055] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:17:49,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675811158] [2021-11-02 23:17:49,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:17:49,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:17:49,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:17:49,706 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:17:49,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-11-02 23:17:54,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:17:54,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:17:54,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-02 23:17:54,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:17:58,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 0 proven. 2020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:17:58,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675811158] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:17:58,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:17:58,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 129 [2021-11-02 23:17:58,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362485597] [2021-11-02 23:17:58,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2021-11-02 23:17:58,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:17:58,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2021-11-02 23:17:58,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2378, Invalid=14392, Unknown=0, NotChecked=0, Total=16770 [2021-11-02 23:17:58,074 INFO L87 Difference]: Start difference. First operand 450 states and 457 transitions. Second operand has 130 states, 129 states have (on average 3.2325581395348837) internal successors, (417), 130 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:59,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:17:59,046 INFO L93 Difference]: Finished difference Result 479 states and 483 transitions. [2021-11-02 23:17:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-02 23:17:59,047 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 129 states have (on average 3.2325581395348837) internal successors, (417), 130 states have internal predecessors, (417), 0 states have call successors, (0), 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 209 [2021-11-02 23:17:59,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:17:59,048 INFO L225 Difference]: With dead ends: 479 [2021-11-02 23:17:59,049 INFO L226 Difference]: Without dead ends: 478 [2021-11-02 23:17:59,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8379 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4104, Invalid=18848, Unknown=0, NotChecked=0, Total=22952 [2021-11-02 23:17:59,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-02 23:17:59,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 470. [2021-11-02 23:17:59,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 467 states have (on average 1.025695931477516) internal successors, (479), 469 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:59,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 479 transitions. [2021-11-02 23:17:59,059 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 479 transitions. Word has length 209 [2021-11-02 23:17:59,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:17:59,060 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 479 transitions. [2021-11-02 23:17:59,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 129 states have (on average 3.2325581395348837) internal successors, (417), 130 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:17:59,060 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 479 transitions. [2021-11-02 23:17:59,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-02 23:17:59,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:17:59,061 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 1, 1, 1, 1] [2021-11-02 23:17:59,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2021-11-02 23:17:59,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:17:59,261 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:17:59,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:17:59,262 INFO L85 PathProgramCache]: Analyzing trace with hash 609487999, now seen corresponding path program 20 times [2021-11-02 23:17:59,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:17:59,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602279551] [2021-11-02 23:17:59,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:17:59,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:17:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:18:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2060 backedges. 0 proven. 2060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:18:00,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:18:00,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602279551] [2021-11-02 23:18:00,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602279551] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:18:00,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682167446] [2021-11-02 23:18:00,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:18:00,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:18:00,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:18:00,518 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:18:00,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-11-02 23:18:05,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:18:05,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:18:05,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-02 23:18:05,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:18:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2060 backedges. 0 proven. 2060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:18:08,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682167446] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:18:08,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:18:08,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 129 [2021-11-02 23:18:08,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247435403] [2021-11-02 23:18:08,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2021-11-02 23:18:08,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:18:08,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2021-11-02 23:18:08,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2378, Invalid=14392, Unknown=0, NotChecked=0, Total=16770 [2021-11-02 23:18:08,906 INFO L87 Difference]: Start difference. First operand 470 states and 479 transitions. Second operand has 130 states, 129 states have (on average 3.2635658914728682) internal successors, (421), 130 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:10,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:18:10,828 INFO L93 Difference]: Finished difference Result 474 states and 483 transitions. [2021-11-02 23:18:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-02 23:18:10,828 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 129 states have (on average 3.2635658914728682) internal successors, (421), 130 states have internal predecessors, (421), 0 states have call successors, (0), 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 211 [2021-11-02 23:18:10,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:18:10,830 INFO L225 Difference]: With dead ends: 474 [2021-11-02 23:18:10,830 INFO L226 Difference]: Without dead ends: 473 [2021-11-02 23:18:10,832 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10308 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5926, Invalid=24176, Unknown=0, NotChecked=0, Total=30102 [2021-11-02 23:18:10,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-02 23:18:10,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 472. [2021-11-02 23:18:10,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 469 states have (on average 1.0255863539445629) internal successors, (481), 471 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 481 transitions. [2021-11-02 23:18:10,842 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 481 transitions. Word has length 211 [2021-11-02 23:18:10,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:18:10,842 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 481 transitions. [2021-11-02 23:18:10,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 129 states have (on average 3.2635658914728682) internal successors, (421), 130 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:10,842 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 481 transitions. [2021-11-02 23:18:10,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-02 23:18:10,844 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:18:10,844 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1] [2021-11-02 23:18:10,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-11-02 23:18:11,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:18:11,046 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:18:11,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:18:11,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2146865048, now seen corresponding path program 17 times [2021-11-02 23:18:11,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:18:11,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697702295] [2021-11-02 23:18:11,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:18:11,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:18:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:18:12,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1768 backedges. 0 proven. 1768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:18:12,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:18:12,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697702295] [2021-11-02 23:18:12,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697702295] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:18:12,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151379656] [2021-11-02 23:18:12,534 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:18:12,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:18:12,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:18:12,534 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:18:12,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-11-02 23:18:17,719 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-02 23:18:17,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:18:17,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-02 23:18:17,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:18:21,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1768 backedges. 0 proven. 1768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:18:21,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151379656] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:18:21,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:18:21,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 145 [2021-11-02 23:18:21,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541319846] [2021-11-02 23:18:21,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2021-11-02 23:18:21,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:18:21,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2021-11-02 23:18:21,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3275, Invalid=17895, Unknown=0, NotChecked=0, Total=21170 [2021-11-02 23:18:21,582 INFO L87 Difference]: Start difference. First operand 472 states and 481 transitions. Second operand has 146 states, 145 states have (on average 2.9586206896551723) internal successors, (429), 146 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:23,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:18:23,456 INFO L93 Difference]: Finished difference Result 473 states and 481 transitions. [2021-11-02 23:18:23,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-02 23:18:23,456 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 145 states have (on average 2.9586206896551723) internal successors, (429), 146 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2021-11-02 23:18:23,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:18:23,458 INFO L225 Difference]: With dead ends: 473 [2021-11-02 23:18:23,458 INFO L226 Difference]: Without dead ends: 472 [2021-11-02 23:18:23,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12448 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=6700, Invalid=26606, Unknown=0, NotChecked=0, Total=33306 [2021-11-02 23:18:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-02 23:18:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2021-11-02 23:18:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 469 states have (on average 1.023454157782516) internal successors, (480), 471 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:23,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 480 transitions. [2021-11-02 23:18:23,469 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 480 transitions. Word has length 215 [2021-11-02 23:18:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:18:23,470 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 480 transitions. [2021-11-02 23:18:23,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 145 states have (on average 2.9586206896551723) internal successors, (429), 146 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:23,470 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 480 transitions. [2021-11-02 23:18:23,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-02 23:18:23,471 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:18:23,471 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1] [2021-11-02 23:18:23,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2021-11-02 23:18:23,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-11-02 23:18:23,672 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:18:23,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:18:23,672 INFO L85 PathProgramCache]: Analyzing trace with hash -898578568, now seen corresponding path program 17 times [2021-11-02 23:18:23,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:18:23,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205462780] [2021-11-02 23:18:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:18:23,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:18:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:18:25,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1819 backedges. 0 proven. 1819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:18:25,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:18:25,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205462780] [2021-11-02 23:18:25,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205462780] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:18:25,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799699519] [2021-11-02 23:18:25,240 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:18:25,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:18:25,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:18:25,241 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:18:25,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-11-02 23:18:30,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-02 23:18:30,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:18:30,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-02 23:18:30,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:18:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1819 backedges. 0 proven. 1819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:18:34,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799699519] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:18:34,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:18:34,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 146 [2021-11-02 23:18:34,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796558499] [2021-11-02 23:18:34,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2021-11-02 23:18:34,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:18:34,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2021-11-02 23:18:34,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3350, Invalid=18112, Unknown=0, NotChecked=0, Total=21462 [2021-11-02 23:18:34,633 INFO L87 Difference]: Start difference. First operand 472 states and 480 transitions. Second operand has 147 states, 146 states have (on average 2.9657534246575343) internal successors, (433), 147 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:36,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:18:36,509 INFO L93 Difference]: Finished difference Result 473 states and 480 transitions. [2021-11-02 23:18:36,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-11-02 23:18:36,510 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 146 states have (on average 2.9657534246575343) internal successors, (433), 147 states have internal predecessors, (433), 0 states have call successors, (0), 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 218 [2021-11-02 23:18:36,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:18:36,512 INFO L225 Difference]: With dead ends: 473 [2021-11-02 23:18:36,512 INFO L226 Difference]: Without dead ends: 472 [2021-11-02 23:18:36,515 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12555 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=6812, Invalid=26860, Unknown=0, NotChecked=0, Total=33672 [2021-11-02 23:18:36,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-02 23:18:36,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2021-11-02 23:18:36,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 469 states have (on average 1.0213219616204692) internal successors, (479), 471 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 479 transitions. [2021-11-02 23:18:36,527 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 479 transitions. Word has length 218 [2021-11-02 23:18:36,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:18:36,528 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 479 transitions. [2021-11-02 23:18:36,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 146 states have (on average 2.9657534246575343) internal successors, (433), 147 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:36,528 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 479 transitions. [2021-11-02 23:18:36,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-02 23:18:36,529 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:18:36,529 INFO L513 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1] [2021-11-02 23:18:36,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2021-11-02 23:18:36,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:18:36,734 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:18:36,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:18:36,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2031698894, now seen corresponding path program 21 times [2021-11-02 23:18:36,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:18:36,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165943208] [2021-11-02 23:18:36,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:18:36,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:18:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:18:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 0 proven. 2226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:18:38,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:18:38,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165943208] [2021-11-02 23:18:38,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165943208] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:18:38,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240330013] [2021-11-02 23:18:38,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:18:38,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:18:38,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:18:38,145 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:18:38,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-11-02 23:18:43,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-02 23:18:43,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:18:43,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-02 23:18:43,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:18:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 0 proven. 2226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:18:47,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240330013] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:18:47,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:18:47,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2021-11-02 23:18:47,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000241514] [2021-11-02 23:18:47,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2021-11-02 23:18:47,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:18:47,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2021-11-02 23:18:47,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2590, Invalid=15770, Unknown=0, NotChecked=0, Total=18360 [2021-11-02 23:18:47,499 INFO L87 Difference]: Start difference. First operand 472 states and 479 transitions. Second operand has 136 states, 135 states have (on average 3.237037037037037) internal successors, (437), 136 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:48,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:18:48,588 INFO L93 Difference]: Finished difference Result 501 states and 505 transitions. [2021-11-02 23:18:48,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-11-02 23:18:48,590 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 135 states have (on average 3.237037037037037) internal successors, (437), 136 states have internal predecessors, (437), 0 states have call successors, (0), 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 219 [2021-11-02 23:18:48,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:18:48,599 INFO L225 Difference]: With dead ends: 501 [2021-11-02 23:18:48,599 INFO L226 Difference]: Without dead ends: 500 [2021-11-02 23:18:48,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9196 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4475, Invalid=20647, Unknown=0, NotChecked=0, Total=25122 [2021-11-02 23:18:48,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-02 23:18:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 492. [2021-11-02 23:18:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 489 states have (on average 1.0245398773006136) internal successors, (501), 491 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 501 transitions. [2021-11-02 23:18:48,619 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 501 transitions. Word has length 219 [2021-11-02 23:18:48,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:18:48,619 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 501 transitions. [2021-11-02 23:18:48,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 135 states have (on average 3.237037037037037) internal successors, (437), 136 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:18:48,620 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 501 transitions. [2021-11-02 23:18:48,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-02 23:18:48,623 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:18:48,624 INFO L513 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 1, 1, 1, 1] [2021-11-02 23:18:48,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2021-11-02 23:18:48,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-11-02 23:18:48,850 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:18:48,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:18:48,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1747480688, now seen corresponding path program 21 times [2021-11-02 23:18:48,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:18:48,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549906753] [2021-11-02 23:18:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:18:48,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:18:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:18:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2268 backedges. 0 proven. 2268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:18:50,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:18:50,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549906753] [2021-11-02 23:18:50,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549906753] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:18:50,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699929172] [2021-11-02 23:18:50,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:18:50,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:18:50,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:18:50,216 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:18:50,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-11-02 23:18:55,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-02 23:18:55,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:18:55,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-02 23:18:55,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:18:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2268 backedges. 0 proven. 2268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:18:59,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699929172] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:18:59,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:18:59,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2021-11-02 23:18:59,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147780619] [2021-11-02 23:18:59,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2021-11-02 23:18:59,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:18:59,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2021-11-02 23:18:59,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2590, Invalid=15770, Unknown=0, NotChecked=0, Total=18360 [2021-11-02 23:18:59,554 INFO L87 Difference]: Start difference. First operand 492 states and 501 transitions. Second operand has 136 states, 135 states have (on average 3.2666666666666666) internal successors, (441), 136 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:01,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:01,425 INFO L93 Difference]: Finished difference Result 496 states and 505 transitions. [2021-11-02 23:19:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-11-02 23:19:01,425 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 135 states have (on average 3.2666666666666666) internal successors, (441), 136 states have internal predecessors, (441), 0 states have call successors, (0), 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 221 [2021-11-02 23:19:01,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:01,427 INFO L225 Difference]: With dead ends: 496 [2021-11-02 23:19:01,427 INFO L226 Difference]: Without dead ends: 495 [2021-11-02 23:19:01,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11050 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=6322, Invalid=25898, Unknown=0, NotChecked=0, Total=32220 [2021-11-02 23:19:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-11-02 23:19:01,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 494. [2021-11-02 23:19:01,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 491 states have (on average 1.0244399185336048) internal successors, (503), 493 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 503 transitions. [2021-11-02 23:19:01,445 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 503 transitions. Word has length 221 [2021-11-02 23:19:01,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:01,446 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 503 transitions. [2021-11-02 23:19:01,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 135 states have (on average 3.2666666666666666) internal successors, (441), 136 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:01,446 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 503 transitions. [2021-11-02 23:19:01,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-02 23:19:01,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:01,448 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1] [2021-11-02 23:19:01,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2021-11-02 23:19:01,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-11-02 23:19:01,654 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:19:01,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:01,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1900523989, now seen corresponding path program 18 times [2021-11-02 23:19:01,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:19:01,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557593515] [2021-11-02 23:19:01,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:01,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:19:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:03,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:03,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:19:03,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557593515] [2021-11-02 23:19:03,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557593515] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:19:03,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157596014] [2021-11-02 23:19:03,294 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:19:03,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:19:03,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:19:03,295 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:19:03,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-11-02 23:19:08,976 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-02 23:19:08,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:19:08,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-02 23:19:08,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:13,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157596014] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:19:13,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:19:13,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 153 [2021-11-02 23:19:13,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258889394] [2021-11-02 23:19:13,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2021-11-02 23:19:13,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:19:13,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2021-11-02 23:19:13,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3628, Invalid=19934, Unknown=0, NotChecked=0, Total=23562 [2021-11-02 23:19:13,327 INFO L87 Difference]: Start difference. First operand 494 states and 503 transitions. Second operand has 154 states, 153 states have (on average 2.9607843137254903) internal successors, (453), 154 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:15,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:15,359 INFO L93 Difference]: Finished difference Result 495 states and 503 transitions. [2021-11-02 23:19:15,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-11-02 23:19:15,360 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 153 states have (on average 2.9607843137254903) internal successors, (453), 154 states have internal predecessors, (453), 0 states have call successors, (0), 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 227 [2021-11-02 23:19:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:15,361 INFO L225 Difference]: With dead ends: 495 [2021-11-02 23:19:15,361 INFO L226 Difference]: Without dead ends: 494 [2021-11-02 23:19:15,363 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13896 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=7433, Invalid=29623, Unknown=0, NotChecked=0, Total=37056 [2021-11-02 23:19:15,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-11-02 23:19:15,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 494. [2021-11-02 23:19:15,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 491 states have (on average 1.0224032586558045) internal successors, (502), 493 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 502 transitions. [2021-11-02 23:19:15,373 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 502 transitions. Word has length 227 [2021-11-02 23:19:15,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:15,373 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 502 transitions. [2021-11-02 23:19:15,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 153 states have (on average 2.9607843137254903) internal successors, (453), 154 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:15,373 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 502 transitions. [2021-11-02 23:19:15,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-02 23:19:15,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:15,374 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1] [2021-11-02 23:19:15,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-11-02 23:19:15,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-11-02 23:19:15,578 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:19:15,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:15,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1762318881, now seen corresponding path program 22 times [2021-11-02 23:19:15,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:19:15,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301681066] [2021-11-02 23:19:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:15,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:19:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 0 proven. 2442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:17,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:19:17,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301681066] [2021-11-02 23:19:17,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301681066] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:19:17,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874528100] [2021-11-02 23:19:17,058 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:19:17,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:19:17,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:19:17,059 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:19:17,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-11-02 23:19:22,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:19:22,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:19:22,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-02 23:19:22,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:26,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 0 proven. 2442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:26,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874528100] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:19:26,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:19:26,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 141 [2021-11-02 23:19:26,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840746098] [2021-11-02 23:19:26,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2021-11-02 23:19:26,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:19:26,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2021-11-02 23:19:26,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2811, Invalid=17211, Unknown=0, NotChecked=0, Total=20022 [2021-11-02 23:19:26,842 INFO L87 Difference]: Start difference. First operand 494 states and 502 transitions. Second operand has 142 states, 141 states have (on average 3.2411347517730498) internal successors, (457), 142 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:28,024 INFO L93 Difference]: Finished difference Result 524 states and 528 transitions. [2021-11-02 23:19:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-02 23:19:28,025 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 141 states have (on average 3.2411347517730498) internal successors, (457), 142 states have internal predecessors, (457), 0 states have call successors, (0), 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 229 [2021-11-02 23:19:28,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:28,026 INFO L225 Difference]: With dead ends: 524 [2021-11-02 23:19:28,026 INFO L226 Difference]: Without dead ends: 523 [2021-11-02 23:19:28,028 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10051 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4862, Invalid=22528, Unknown=0, NotChecked=0, Total=27390 [2021-11-02 23:19:28,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-11-02 23:19:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 514. [2021-11-02 23:19:28,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 511 states have (on average 1.025440313111546) internal successors, (524), 513 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:28,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 524 transitions. [2021-11-02 23:19:28,037 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 524 transitions. Word has length 229 [2021-11-02 23:19:28,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:28,037 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 524 transitions. [2021-11-02 23:19:28,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 141 states have (on average 3.2411347517730498) internal successors, (457), 142 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 524 transitions. [2021-11-02 23:19:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-02 23:19:28,038 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:28,038 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 1, 1, 1, 1] [2021-11-02 23:19:28,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2021-11-02 23:19:28,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-11-02 23:19:28,239 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:19:28,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:28,239 INFO L85 PathProgramCache]: Analyzing trace with hash -2043645205, now seen corresponding path program 18 times [2021-11-02 23:19:28,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:19:28,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629244681] [2021-11-02 23:19:28,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:28,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:19:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2034 backedges. 0 proven. 2034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:30,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:19:30,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629244681] [2021-11-02 23:19:30,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629244681] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:19:30,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106846197] [2021-11-02 23:19:30,022 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:19:30,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:19:30,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:19:30,023 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:19:30,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-11-02 23:19:35,979 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-02 23:19:35,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:19:35,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-02 23:19:35,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2034 backedges. 0 proven. 2034 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:40,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106846197] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:19:40,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:19:40,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 154 [2021-11-02 23:19:40,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532857439] [2021-11-02 23:19:40,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2021-11-02 23:19:40,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:19:40,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2021-11-02 23:19:40,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3707, Invalid=20163, Unknown=0, NotChecked=0, Total=23870 [2021-11-02 23:19:40,249 INFO L87 Difference]: Start difference. First operand 514 states and 524 transitions. Second operand has 155 states, 154 states have (on average 2.9675324675324677) internal successors, (457), 155 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:42,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:42,397 INFO L93 Difference]: Finished difference Result 515 states and 524 transitions. [2021-11-02 23:19:42,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-11-02 23:19:42,398 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 154 states have (on average 2.9675324675324677) internal successors, (457), 155 states have internal predecessors, (457), 0 states have call successors, (0), 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 230 [2021-11-02 23:19:42,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:42,398 INFO L225 Difference]: With dead ends: 515 [2021-11-02 23:19:42,398 INFO L226 Difference]: Without dead ends: 514 [2021-11-02 23:19:42,400 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14009 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=7551, Invalid=29891, Unknown=0, NotChecked=0, Total=37442 [2021-11-02 23:19:42,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-11-02 23:19:42,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2021-11-02 23:19:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 511 states have (on average 1.0234833659491194) internal successors, (523), 513 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:42,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 523 transitions. [2021-11-02 23:19:42,410 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 523 transitions. Word has length 230 [2021-11-02 23:19:42,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:42,410 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 523 transitions. [2021-11-02 23:19:42,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 154 states have (on average 2.9675324675324677) internal successors, (457), 155 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:42,410 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 523 transitions. [2021-11-02 23:19:42,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-02 23:19:42,411 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:42,411 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 1, 1, 1, 1] [2021-11-02 23:19:42,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2021-11-02 23:19:42,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:19:42,614 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:19:42,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:42,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1371328159, now seen corresponding path program 22 times [2021-11-02 23:19:42,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:19:42,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067820980] [2021-11-02 23:19:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:42,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:19:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2486 backedges. 0 proven. 2486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:44,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:19:44,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067820980] [2021-11-02 23:19:44,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067820980] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:19:44,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217722947] [2021-11-02 23:19:44,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:19:44,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:19:44,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:19:44,108 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:19:44,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-11-02 23:19:50,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:19:50,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:19:50,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-02 23:19:50,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:19:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2486 backedges. 0 proven. 2486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:54,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217722947] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:19:54,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:19:54,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 141 [2021-11-02 23:19:54,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392216893] [2021-11-02 23:19:54,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2021-11-02 23:19:54,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:19:54,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2021-11-02 23:19:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2811, Invalid=17211, Unknown=0, NotChecked=0, Total=20022 [2021-11-02 23:19:54,154 INFO L87 Difference]: Start difference. First operand 514 states and 523 transitions. Second operand has 142 states, 141 states have (on average 3.269503546099291) internal successors, (461), 142 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:19:56,308 INFO L93 Difference]: Finished difference Result 518 states and 527 transitions. [2021-11-02 23:19:56,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-02 23:19:56,308 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 141 states have (on average 3.269503546099291) internal successors, (461), 142 states have internal predecessors, (461), 0 states have call successors, (0), 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 231 [2021-11-02 23:19:56,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:19:56,309 INFO L225 Difference]: With dead ends: 518 [2021-11-02 23:19:56,309 INFO L226 Difference]: Without dead ends: 517 [2021-11-02 23:19:56,311 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12357 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=7035, Invalid=28875, Unknown=0, NotChecked=0, Total=35910 [2021-11-02 23:19:56,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-11-02 23:19:56,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 516. [2021-11-02 23:19:56,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 513 states have (on average 1.023391812865497) internal successors, (525), 515 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:56,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 525 transitions. [2021-11-02 23:19:56,322 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 525 transitions. Word has length 231 [2021-11-02 23:19:56,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:19:56,322 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 525 transitions. [2021-11-02 23:19:56,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 141 states have (on average 3.269503546099291) internal successors, (461), 142 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:19:56,323 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 525 transitions. [2021-11-02 23:19:56,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-02 23:19:56,323 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:19:56,323 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1] [2021-11-02 23:19:56,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-11-02 23:19:56,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:19:56,524 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:19:56,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:19:56,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1207318466, now seen corresponding path program 19 times [2021-11-02 23:19:56,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:19:56,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635641566] [2021-11-02 23:19:56,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:19:56,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:19:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:19:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2204 backedges. 0 proven. 2204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:19:58,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:19:58,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635641566] [2021-11-02 23:19:58,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635641566] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:19:58,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903516908] [2021-11-02 23:19:58,319 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 23:19:58,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:19:58,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:19:58,321 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:19:58,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-11-02 23:20:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:20:04,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-02 23:20:04,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:20:09,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2204 backedges. 0 proven. 2204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:09,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903516908] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:20:09,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:20:09,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 161 [2021-11-02 23:20:09,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50988266] [2021-11-02 23:20:09,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2021-11-02 23:20:09,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:20:09,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2021-11-02 23:20:09,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3999, Invalid=22083, Unknown=0, NotChecked=0, Total=26082 [2021-11-02 23:20:09,100 INFO L87 Difference]: Start difference. First operand 516 states and 525 transitions. Second operand has 162 states, 161 states have (on average 2.9627329192546585) internal successors, (477), 162 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:20:11,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:20:11,296 INFO L93 Difference]: Finished difference Result 517 states and 525 transitions. [2021-11-02 23:20:11,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-02 23:20:11,306 INFO L78 Accepts]: Start accepts. Automaton has has 162 states, 161 states have (on average 2.9627329192546585) internal successors, (477), 162 states have internal predecessors, (477), 0 states have call successors, (0), 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 239 [2021-11-02 23:20:11,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:20:11,307 INFO L225 Difference]: With dead ends: 517 [2021-11-02 23:20:11,307 INFO L226 Difference]: Without dead ends: 516 [2021-11-02 23:20:11,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15423 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=8204, Invalid=32802, Unknown=0, NotChecked=0, Total=41006 [2021-11-02 23:20:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-11-02 23:20:11,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2021-11-02 23:20:11,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 513 states have (on average 1.0214424951267056) internal successors, (524), 515 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:20:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 524 transitions. [2021-11-02 23:20:11,328 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 524 transitions. Word has length 239 [2021-11-02 23:20:11,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:20:11,328 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 524 transitions. [2021-11-02 23:20:11,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 161 states have (on average 2.9627329192546585) internal successors, (477), 162 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:20:11,329 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 524 transitions. [2021-11-02 23:20:11,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-02 23:20:11,330 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:20:11,330 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1] [2021-11-02 23:20:11,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2021-11-02 23:20:11,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:20:11,550 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:20:11,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:20:11,550 INFO L85 PathProgramCache]: Analyzing trace with hash 672032432, now seen corresponding path program 23 times [2021-11-02 23:20:11,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:20:11,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4966712] [2021-11-02 23:20:11,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:20:11,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:20:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:20:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 0 proven. 2668 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:13,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:20:13,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4966712] [2021-11-02 23:20:13,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4966712] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:20:13,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177693236] [2021-11-02 23:20:13,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:20:13,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:20:13,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:20:13,235 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:20:13,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-11-02 23:20:19,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-11-02 23:20:19,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:20:19,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-02 23:20:19,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:20:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 0 proven. 2668 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:23,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177693236] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:20:23,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:20:23,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2021-11-02 23:20:23,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350076421] [2021-11-02 23:20:23,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 148 states [2021-11-02 23:20:23,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:20:23,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2021-11-02 23:20:23,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3041, Invalid=18715, Unknown=0, NotChecked=0, Total=21756 [2021-11-02 23:20:23,807 INFO L87 Difference]: Start difference. First operand 516 states and 524 transitions. Second operand has 148 states, 147 states have (on average 3.2448979591836733) internal successors, (477), 148 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:20:25,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:20:25,102 INFO L93 Difference]: Finished difference Result 546 states and 550 transitions. [2021-11-02 23:20:25,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-02 23:20:25,103 INFO L78 Accepts]: Start accepts. Automaton has has 148 states, 147 states have (on average 3.2448979591836733) internal successors, (477), 148 states have internal predecessors, (477), 0 states have call successors, (0), 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 239 [2021-11-02 23:20:25,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:20:25,104 INFO L225 Difference]: With dead ends: 546 [2021-11-02 23:20:25,104 INFO L226 Difference]: Without dead ends: 545 [2021-11-02 23:20:25,105 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10944 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=5265, Invalid=24491, Unknown=0, NotChecked=0, Total=29756 [2021-11-02 23:20:25,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-11-02 23:20:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 536. [2021-11-02 23:20:25,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 533 states have (on average 1.024390243902439) internal successors, (546), 535 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:20:25,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 546 transitions. [2021-11-02 23:20:25,115 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 546 transitions. Word has length 239 [2021-11-02 23:20:25,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:20:25,115 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 546 transitions. [2021-11-02 23:20:25,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 148 states, 147 states have (on average 3.2448979591836733) internal successors, (477), 148 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:20:25,116 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 546 transitions. [2021-11-02 23:20:25,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-02 23:20:25,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:20:25,117 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 1, 1, 1, 1] [2021-11-02 23:20:25,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2021-11-02 23:20:25,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-11-02 23:20:25,336 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:20:25,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:20:25,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1578074610, now seen corresponding path program 23 times [2021-11-02 23:20:25,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:20:25,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607084558] [2021-11-02 23:20:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:20:25,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:20:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:20:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2714 backedges. 0 proven. 2714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:26,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:20:26,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607084558] [2021-11-02 23:20:26,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607084558] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:20:26,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095393967] [2021-11-02 23:20:26,934 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:20:26,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:20:26,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:20:26,934 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:20:26,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-11-02 23:20:33,426 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-11-02 23:20:33,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:20:33,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-02 23:20:33,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:20:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2714 backedges. 0 proven. 2714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:37,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095393967] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:20:37,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:20:37,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2021-11-02 23:20:37,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580326313] [2021-11-02 23:20:37,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 148 states [2021-11-02 23:20:37,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:20:37,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2021-11-02 23:20:37,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3041, Invalid=18715, Unknown=0, NotChecked=0, Total=21756 [2021-11-02 23:20:37,765 INFO L87 Difference]: Start difference. First operand 536 states and 546 transitions. Second operand has 148 states, 147 states have (on average 3.272108843537415) internal successors, (481), 148 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:20:39,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:20:39,956 INFO L93 Difference]: Finished difference Result 540 states and 550 transitions. [2021-11-02 23:20:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-02 23:20:39,956 INFO L78 Accepts]: Start accepts. Automaton has has 148 states, 147 states have (on average 3.272108843537415) internal successors, (481), 148 states have internal predecessors, (481), 0 states have call successors, (0), 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 241 [2021-11-02 23:20:39,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:20:39,957 INFO L225 Difference]: With dead ends: 540 [2021-11-02 23:20:39,957 INFO L226 Difference]: Without dead ends: 539 [2021-11-02 23:20:39,960 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13306 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=7565, Invalid=31047, Unknown=0, NotChecked=0, Total=38612 [2021-11-02 23:20:39,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-11-02 23:20:39,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 538. [2021-11-02 23:20:39,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 535 states have (on average 1.0242990654205608) internal successors, (548), 537 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:20:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 548 transitions. [2021-11-02 23:20:39,971 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 548 transitions. Word has length 241 [2021-11-02 23:20:39,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:20:39,971 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 548 transitions. [2021-11-02 23:20:39,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 148 states, 147 states have (on average 3.272108843537415) internal successors, (481), 148 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:20:39,971 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 548 transitions. [2021-11-02 23:20:39,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-02 23:20:39,972 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:20:39,972 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 1, 1, 1, 1] [2021-11-02 23:20:40,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2021-11-02 23:20:40,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:20:40,173 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:20:40,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:20:40,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1168345566, now seen corresponding path program 19 times [2021-11-02 23:20:40,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:20:40,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826184549] [2021-11-02 23:20:40,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:20:40,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:20:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:20:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2261 backedges. 0 proven. 2261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:42,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:20:42,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826184549] [2021-11-02 23:20:42,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826184549] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:20:42,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461506106] [2021-11-02 23:20:42,351 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 23:20:42,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:20:42,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:20:42,352 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:20:42,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-11-02 23:20:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:20:49,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-02 23:20:49,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:20:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2261 backedges. 0 proven. 2261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:54,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461506106] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:20:54,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:20:54,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 162 [2021-11-02 23:20:54,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18800712] [2021-11-02 23:20:54,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2021-11-02 23:20:54,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:20:54,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2021-11-02 23:20:54,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4082, Invalid=22324, Unknown=0, NotChecked=0, Total=26406 [2021-11-02 23:20:54,021 INFO L87 Difference]: Start difference. First operand 538 states and 548 transitions. Second operand has 163 states, 162 states have (on average 2.9691358024691357) internal successors, (481), 163 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:20:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:20:56,187 INFO L93 Difference]: Finished difference Result 539 states and 548 transitions. [2021-11-02 23:20:56,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-02 23:20:56,187 INFO L78 Accepts]: Start accepts. Automaton has has 163 states, 162 states have (on average 2.9691358024691357) internal successors, (481), 163 states have internal predecessors, (481), 0 states have call successors, (0), 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 242 [2021-11-02 23:20:56,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:20:56,188 INFO L225 Difference]: With dead ends: 539 [2021-11-02 23:20:56,188 INFO L226 Difference]: Without dead ends: 538 [2021-11-02 23:20:56,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15542 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=8328, Invalid=33084, Unknown=0, NotChecked=0, Total=41412 [2021-11-02 23:20:56,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-11-02 23:20:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2021-11-02 23:20:56,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 535 states have (on average 1.0224299065420561) internal successors, (547), 537 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:20:56,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 547 transitions. [2021-11-02 23:20:56,201 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 547 transitions. Word has length 242 [2021-11-02 23:20:56,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:20:56,201 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 547 transitions. [2021-11-02 23:20:56,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 162 states have (on average 2.9691358024691357) internal successors, (481), 163 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:20:56,202 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 547 transitions. [2021-11-02 23:20:56,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-02 23:20:56,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:20:56,203 INFO L513 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1] [2021-11-02 23:20:56,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2021-11-02 23:20:56,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:20:56,403 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:20:56,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:20:56,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1454533055, now seen corresponding path program 24 times [2021-11-02 23:20:56,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:20:56,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224176014] [2021-11-02 23:20:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:20:56,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:20:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:20:58,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 0 proven. 2904 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:58,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:20:58,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224176014] [2021-11-02 23:20:58,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224176014] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:20:58,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216913560] [2021-11-02 23:20:58,232 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:20:58,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:20:58,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:20:58,233 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:20:58,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-11-02 23:21:05,043 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-02 23:21:05,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:21:05,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-02 23:21:05,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:21:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 0 proven. 2904 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:21:09,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216913560] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:21:09,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:21:09,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 153 [2021-11-02 23:21:09,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317792985] [2021-11-02 23:21:09,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2021-11-02 23:21:09,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:09,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2021-11-02 23:21:09,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3280, Invalid=20282, Unknown=0, NotChecked=0, Total=23562 [2021-11-02 23:21:09,618 INFO L87 Difference]: Start difference. First operand 538 states and 547 transitions. Second operand has 154 states, 153 states have (on average 3.2483660130718954) internal successors, (497), 154 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:21:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:10,941 INFO L93 Difference]: Finished difference Result 569 states and 573 transitions. [2021-11-02 23:21:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-02 23:21:10,942 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 153 states have (on average 3.2483660130718954) internal successors, (497), 154 states have internal predecessors, (497), 0 states have call successors, (0), 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 249 [2021-11-02 23:21:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:10,943 INFO L225 Difference]: With dead ends: 569 [2021-11-02 23:21:10,943 INFO L226 Difference]: Without dead ends: 568 [2021-11-02 23:21:10,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11875 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=5684, Invalid=26536, Unknown=0, NotChecked=0, Total=32220 [2021-11-02 23:21:10,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-11-02 23:21:10,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 558. [2021-11-02 23:21:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 555 states have (on average 1.0252252252252252) internal successors, (569), 557 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:21:10,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 569 transitions. [2021-11-02 23:21:10,955 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 569 transitions. Word has length 249 [2021-11-02 23:21:10,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:10,955 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 569 transitions. [2021-11-02 23:21:10,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 153 states have (on average 3.2483660130718954) internal successors, (497), 154 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:21:10,956 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 569 transitions. [2021-11-02 23:21:10,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-02 23:21:10,956 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:10,957 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1] [2021-11-02 23:21:10,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2021-11-02 23:21:11,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:11,157 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:21:11,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:11,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1800553007, now seen corresponding path program 20 times [2021-11-02 23:21:11,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:11,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700744417] [2021-11-02 23:21:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:11,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:21:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2440 backedges. 0 proven. 2440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:21:13,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:13,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700744417] [2021-11-02 23:21:13,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700744417] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:21:13,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545191145] [2021-11-02 23:21:13,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:21:13,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:13,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:13,234 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:21:13,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-11-02 23:21:20,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:21:20,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:21:20,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 85 conjunts are in the unsatisfiable core [2021-11-02 23:21:20,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:21:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2440 backedges. 0 proven. 2440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:21:25,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545191145] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:21:25,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:21:25,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 169 [2021-11-02 23:21:25,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59401937] [2021-11-02 23:21:25,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 170 states [2021-11-02 23:21:25,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:25,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2021-11-02 23:21:25,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4388, Invalid=24342, Unknown=0, NotChecked=0, Total=28730 [2021-11-02 23:21:25,074 INFO L87 Difference]: Start difference. First operand 558 states and 569 transitions. Second operand has 170 states, 169 states have (on average 2.964497041420118) internal successors, (501), 170 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:21:27,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:27,434 INFO L93 Difference]: Finished difference Result 559 states and 569 transitions. [2021-11-02 23:21:27,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-11-02 23:21:27,434 INFO L78 Accepts]: Start accepts. Automaton has has 170 states, 169 states have (on average 2.964497041420118) internal successors, (501), 170 states have internal predecessors, (501), 0 states have call successors, (0), 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 251 [2021-11-02 23:21:27,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:27,435 INFO L225 Difference]: With dead ends: 559 [2021-11-02 23:21:27,435 INFO L226 Difference]: Without dead ends: 558 [2021-11-02 23:21:27,437 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17028 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=9013, Invalid=36143, Unknown=0, NotChecked=0, Total=45156 [2021-11-02 23:21:27,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-11-02 23:21:27,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2021-11-02 23:21:27,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 555 states have (on average 1.0234234234234234) internal successors, (568), 557 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:21:27,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 568 transitions. [2021-11-02 23:21:27,448 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 568 transitions. Word has length 251 [2021-11-02 23:21:27,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:27,448 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 568 transitions. [2021-11-02 23:21:27,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 170 states, 169 states have (on average 2.964497041420118) internal successors, (501), 170 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:21:27,449 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 568 transitions. [2021-11-02 23:21:27,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-02 23:21:27,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:27,449 INFO L513 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 24, 24, 24, 1, 1, 1, 1] [2021-11-02 23:21:27,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2021-11-02 23:21:27,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-11-02 23:21:27,650 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:21:27,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:27,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1941892797, now seen corresponding path program 24 times [2021-11-02 23:21:27,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:27,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890868975] [2021-11-02 23:21:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:27,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:21:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2952 backedges. 0 proven. 2952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:21:29,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:29,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890868975] [2021-11-02 23:21:29,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890868975] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:21:29,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973738001] [2021-11-02 23:21:29,487 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:21:29,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:29,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:29,488 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:21:29,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-11-02 23:21:36,634 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-02 23:21:36,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:21:36,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-02 23:21:36,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:21:41,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2952 backedges. 0 proven. 2952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:21:41,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973738001] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:21:41,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:21:41,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 153 [2021-11-02 23:21:41,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355856599] [2021-11-02 23:21:41,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2021-11-02 23:21:41,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:41,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2021-11-02 23:21:41,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3280, Invalid=20282, Unknown=0, NotChecked=0, Total=23562 [2021-11-02 23:21:41,852 INFO L87 Difference]: Start difference. First operand 558 states and 568 transitions. Second operand has 154 states, 153 states have (on average 3.2745098039215685) internal successors, (501), 154 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:21:44,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:44,586 INFO L93 Difference]: Finished difference Result 562 states and 572 transitions. [2021-11-02 23:21:44,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-11-02 23:21:44,586 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 153 states have (on average 3.2745098039215685) internal successors, (501), 154 states have internal predecessors, (501), 0 states have call successors, (0), 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 251 [2021-11-02 23:21:44,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:44,587 INFO L225 Difference]: With dead ends: 562 [2021-11-02 23:21:44,587 INFO L226 Difference]: Without dead ends: 561 [2021-11-02 23:21:44,589 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14591 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=8239, Invalid=33991, Unknown=0, NotChecked=0, Total=42230 [2021-11-02 23:21:44,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-11-02 23:21:44,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 560. [2021-11-02 23:21:44,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 557 states have (on average 1.0233393177737882) internal successors, (570), 559 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:21:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 570 transitions. [2021-11-02 23:21:44,600 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 570 transitions. Word has length 251 [2021-11-02 23:21:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:44,600 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 570 transitions. [2021-11-02 23:21:44,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 153 states have (on average 3.2745098039215685) internal successors, (501), 154 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:21:44,600 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 570 transitions. [2021-11-02 23:21:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-02 23:21:44,601 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:44,601 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 1, 1, 1, 1] [2021-11-02 23:21:44,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2021-11-02 23:21:44,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112,104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:44,802 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:21:44,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:44,802 INFO L85 PathProgramCache]: Analyzing trace with hash 428133457, now seen corresponding path program 20 times [2021-11-02 23:21:44,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:44,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381949634] [2021-11-02 23:21:44,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:44,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:21:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:21:47,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:47,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381949634] [2021-11-02 23:21:47,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381949634] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:21:47,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059353789] [2021-11-02 23:21:47,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:21:47,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:47,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:47,240 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:21:47,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-11-02 23:21:54,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:21:54,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:21:54,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-02 23:21:54,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:22:00,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:22:00,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059353789] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:22:00,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:22:00,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 170 [2021-11-02 23:22:00,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930513240] [2021-11-02 23:22:00,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2021-11-02 23:22:00,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:22:00,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2021-11-02 23:22:00,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4475, Invalid=24595, Unknown=0, NotChecked=0, Total=29070 [2021-11-02 23:22:00,268 INFO L87 Difference]: Start difference. First operand 560 states and 570 transitions. Second operand has 171 states, 170 states have (on average 2.9705882352941178) internal successors, (505), 171 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:22:02,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:22:02,911 INFO L93 Difference]: Finished difference Result 561 states and 570 transitions. [2021-11-02 23:22:02,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-02 23:22:02,912 INFO L78 Accepts]: Start accepts. Automaton has has 171 states, 170 states have (on average 2.9705882352941178) internal successors, (505), 171 states have internal predecessors, (505), 0 states have call successors, (0), 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 254 [2021-11-02 23:22:02,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:22:02,913 INFO L225 Difference]: With dead ends: 561 [2021-11-02 23:22:02,913 INFO L226 Difference]: Without dead ends: 560 [2021-11-02 23:22:02,916 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17153 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=9143, Invalid=36439, Unknown=0, NotChecked=0, Total=45582 [2021-11-02 23:22:02,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-11-02 23:22:02,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2021-11-02 23:22:02,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 557 states have (on average 1.021543985637343) internal successors, (569), 559 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:22:02,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 569 transitions. [2021-11-02 23:22:02,926 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 569 transitions. Word has length 254 [2021-11-02 23:22:02,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:22:02,926 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 569 transitions. [2021-11-02 23:22:02,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 171 states, 170 states have (on average 2.9705882352941178) internal successors, (505), 171 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:22:02,927 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 569 transitions. [2021-11-02 23:22:02,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-02 23:22:02,927 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:22:02,928 INFO L513 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1] [2021-11-02 23:22:02,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-11-02 23:22:03,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443441e-1242-4e9a-8ee3-6573ce636a85/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-11-02 23:22:03,128 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:22:03,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:22:03,128 INFO L85 PathProgramCache]: Analyzing trace with hash 975651986, now seen corresponding path program 25 times [2021-11-02 23:22:03,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:22:03,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305246023] [2021-11-02 23:22:03,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:22:03,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:22:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat